Laura Mulrooney: Okay y'all we're going to go ahead and get started um if you would like to turn your cameras on me encourage you to just so it can feel a little bit more like a real field trip and let's let's get started with a man right let's get to know each other.
Laura Mulrooney: So we'll introduce ourselves first and then we'd like other people to introduce themselves to just so that we can get to know we're going to do some group activities.
Laura Mulrooney: So hopefully we can get meet each other, a little bit so hi i'm Laura and i'm an undergrad at the University of Florida i'm a senior.
Laura Mulrooney: hey guys i'm Emily i'm also a senior at the University of Florida i'm Jamie i'm a junior at us and i'm tori and i'm a senior at us.
Laura Mulrooney: yeah so do we just want to go through, and people that are there, we can start with a Dr Marshall do you want to introduce yourself.
Anita Marshall: hey everybody, my name is Nina Marshall i'm a lecturer at us.
Laura Mulrooney: Derek do you want to introduce yourself.
Derek Thorn: Sure i'm Derek form i'm a graduate from college.
Laura Mulrooney: machida you want to introduce yourself.
Nikita Kepezhinkas: hi everyone I am akita i'm a graduate student at the University of Alberta in Canada former graduate of the University of Florida.
Laura Mulrooney: sands, or do you want to introduce yourself.
Sandor Ricketts: hi sandor recently read it from auburn university just wanted to check out, you have to offer.
Laura Mulrooney: yeah um and hazel or Dan i'm not sure if you're there if you would like to introduce yourself that would go right ahead.
Hazel Gordon: i'm hazel and i'm very old and I haven't comb my hair and I don't want to show my face.
Hazel Gordon: And I don't know very much about the value of your area so i'm that's why i'm here thanks for having this.
Laura Mulrooney: Of course.
Laura Mulrooney: And Dan if you're there to feel free to introduce yourself.
Laura Mulrooney: Okay, well, the first thing that we're going to do is we're going to start with some little bit of a drawing exercise just to get our field skills going the goal of this trip.
Laura Mulrooney: is to have it as an introduction for field work, for it was designed for undergrads but for anyone who'd like to build their field skills.
Laura Mulrooney: See what's the chat to.
Laura Mulrooney: Okay, so we're going to start i'll share my screen.
Laura Mulrooney: So we're going to start by drawing and we're going to sketch with you and we're just going to all work on our field skills we're going to have a few different activities and we are going to do some group ones coming up, but we just want to.
Laura Mulrooney: Get the creative juices flowing on this early morning.
Laura Mulrooney: So we're going to start by sketching in your notebook or a piece of paper or a whiteboard whatever you have nearby on what you see over here to the left.
Laura Mulrooney: Obviously there are certainly there are only so much you can observe from a picture, but try to just see what you've noticed there.
Laura Mulrooney: write it down draw you can put some labels if you'd like to and then we'll talk about and we'll we'll share what we draw as well i'm just to see see what we all come up with, so we will give we'll start with seven minutes drawing this.
Anita Marshall: Laura what kind of things should we draw I mean there's a lot going on here there's roots there soil there's geology how much like what should we be drawing.
Laura Mulrooney: yeah, so I would focus on you want to make sure that you draw a complete sketch, so that if you were going to look back at your notes later, you would know what you were trying to draw I would focus on some of the geologic features.
Laura Mulrooney: or anything that might be important, so noticing where the roots are if they're all in one layer that would be important if you notice any sedimentary structures that would be important and I try not to forget a scale to that also would be good.
Anita Marshall: Great thanks.
Laura Mulrooney: yeah.
Anita Marshall: Who is helping.
Laura Mulrooney: I see welcome.
Anita Marshall: This is like.
Laura Mulrooney: hey so we're all going to sketch.
Sandor Ricketts: Switching screens.
Laura Mulrooney: Okay yo so I know that it's probably not been quite enough time but let's go ahead and see what you have just so that we can talk to you this and we'll also try to add a little bit of context um so I guess, we can start by showing some of ours and we do you want to show.
Laura Mulrooney: So let's see this is what Emily drew for hers.
Laura Mulrooney: And so, some i'll point out some of the things that she has here so first at the top of the page she both wrote the STOP we're at which we didn't explicitly say that this is black rock beach.
Laura Mulrooney: If you had a chance to look at those before you came which wasn't a requirement, this is one of the thoughts that we had published she also then wrote the date and approximate time.
Laura Mulrooney: And then she went through here, and she put a scale bar on the side and then she also she gets the things that showed up up to her so there's a little bit of a white layer she saw she gets the roots a little bit of a yellow layer
Laura Mulrooney: And then the the brown is black layer which has our home instructions, but she been labeled what she drew there, and she also then put numbers by the sides which.
Laura Mulrooney: would be useful if we had been there in person and you could have actually written some descriptions which we'll talk about a little bit more um Jamie I guess two years to.
Laura Mulrooney: So Jamie sketch hurts is a little bit different too, but, as you can see, it has the same kind of the same structures and you can show the different units with all using the same color to your hospital is possible.
Laura Mulrooney: If any of y'all would like to show what you drew have feel free we'd love to see it, but if not, we can talk a little bit about what what we drew and what we noticed here in this outcrop to.
Laura Mulrooney: um so we did have a question of what how lucky cross beds are so you have cross beds, which you know if you picture, like a ripple mark in the sand.
Laura Mulrooney: What we typically think of as the Cross business, you have like a sit like a sigmoid shape like where you have.
Laura Mulrooney: A slope that goes down um, but if you were to cut that perpendicular to that what you're actually going to see is like a hammock structure, and so, in many ways, this is a structure where, if you, you have your typical ripple mark if you were to cut it.
Laura Mulrooney: In a way, that is not it's not the typical way that you see a structure which I think i've got pictures of this.
Laura Mulrooney: So, if you look in the field guide, I think I have some sketches of trying to explain these um so it's the same thing as a ripple it's the same thing as a ripple mark just cutting a different orientation.
Laura Mulrooney: Which that helps to tell us some if we noticed these on a beach face that helps to tell us a little bit about the current direction.
Laura Mulrooney: For these, we didn't actually spend enough time to analyze if they're sloping a certain direction or not, but we know that the current had to be moving up.
Laura Mulrooney: I guess within the wall not perpendicular to the wall that we're looking at.
Laura Mulrooney: yeah it's anybody want to show us there's and we can offer some feedback if you'd like if not that's fine.
Anita Marshall: I am a notoriously slow fields catcher because I never seem to get the details, the way I like them in the field, so what i'll often do is a really loose sketch with annotations and I just tell myself like where the different colors go and I just I literally just write it down.
Anita Marshall: yeah other than sketches and then I fill in the details later when I have time to do it right, one of the challenging things on this outcrop driving me nuts, is how to indicate the sort of gradation of transition.
Anita Marshall: Between the tan layer and the dark layer below if you just have a pencil right and you're just doing like stripling or shading you know how.
Laura Mulrooney: Do you.
Anita Marshall: You know, do that in a way that is makes any kind of sense, you know.
Anita Marshall: it's always challenging for me until I can get back and like us colored pencils or something.
Laura Mulrooney: Yes.
Laura Mulrooney: And the key to do you want to show yours.
Nikita Kepezhinkas: Absolutely i'm thinking right here, we all see.
Nikita Kepezhinkas: Again, not very true to life just kind of.
Nikita Kepezhinkas: Get the data get out.
Laura Mulrooney: Sure what's important.
Laura Mulrooney: Good yeah, and so I guess kind of like Dr Marshall mentioned, which is what Emily started to do by labeling the units is.
Laura Mulrooney: If you were there, and you were actually able to make some observations of each of these units, you would want to write some sort of description.
Laura Mulrooney: You would you could write that oh this top one is white and it has a certain brain size and it looks like it's mostly courts or something yeah like Nikita has there.
Laura Mulrooney: Yes, and so you'd want to include that you want to make some real observations.
Laura Mulrooney: exactly like that, and you can write that and that's to help clue you in later it's just everything to help jog your memory, so that when you're later, looking back at your notes trying to remember what you actually saw what was important that you can decide for your own your own notes.
Hazel Gordon: I have a question.
Anita Marshall: yeah go ahead.
Hazel Gordon: I have a question I was wondering about the soil profile if anybody identify that and what kind of soil that might be it looks pretty well developed to me organic layer and olivia layer and so on, down to bedrock so Has anybody classified it.
Laura Mulrooney: Not that I know of, so this is right on a beach like we were practically standing in the water, when we took this picture.
Laura Mulrooney: We do know, from what we were taught that this area is on the North shore of a barrier island down in Florida, and so it's experienced.
Laura Mulrooney: A lot of erosion in the very recent time period, and there are there are Paleo.
Laura Mulrooney: Paleo souls throughout this area that we did note they're not shown in this picture, I think, but I think in some of our other videos we did talk about them and they're also our actual like mangroves on the beach itself, so this area was was a forest, not that long ago.
Hazel Gordon: Okay, thanks.
Laura Mulrooney: yeah um so we're going to have you all sketch one other thing.
Laura Mulrooney: Just before we move on to something else.
here.
Laura Mulrooney: Just have you sketch this picture here to the left, this time just want to focus on your scales, a little bit different here and wanting to focus on what you've actually see here that stands out to you.
Laura Mulrooney: um I would look at grain size, as well as if you can see any sort of composition.
Laura Mulrooney: As well as just any features and then we'll once again will give a little bit more time, I guess, for this one will try to do around 10 minutes.
Laura Mulrooney: Just to sketch this and see what stands out to you and then we'll we'll talk about it again and to give some context, this is in the St Augustine area, so this is once again right on a beach.
Laura Mulrooney: But it's a little bit further south, and when we were and yeah we'll talk some more about this in a few minutes, once again, if you have questions you want to send them the chat we can make sure to hit those so as well, but will also will talk about this, too, in a few minutes.
Laura Mulrooney: Okay, so let's take a look at what we've gotten drawn for this one too now and what you want to start with your drawing.
Laura Mulrooney: So.
Laura Mulrooney: This one over here this.
Laura Mulrooney: So once again she's labeled the top of the page, which is good it's a good practice to be in and then she can see her units here which she's got a labeled a much different scale this time is about one foot.
Laura Mulrooney: She wants again that got the numbers, where she could go through, and later explain what's actually there, and she kind of has done that, here too, and then she's also got a key for the things that she noticed that she included here.
Laura Mulrooney: Which we'll talk about some a little bit to.
Laura Mulrooney: towards you want to go ahead and talk and we'll give us a minute Jamie.
Laura Mulrooney: Sure, so one thing that we can notice this picture is the orange coloring threw out so here if you were able to access the field trip before our live session, you would know that this cookie dough was deposited on top of the Hawthorne unit.
Laura Mulrooney: Which is a unit that extends around central Florida around southern Georgia, and that is known for having many different layers of clays.
Laura Mulrooney: clays also come, we also know clay comes from chemical weathering often aided by organics and you can see here.
Laura Mulrooney: The bond the photo there is a little bit of a root system that has been eroded away and so it's just interesting to see how all these things come together to see the color that we see, which is the orange clay.
Laura Mulrooney: yeah and sometimes a highlight another thing about this picture which Jamie did a great job of drawing is.
Laura Mulrooney: See so uh we also have not all of these units are rooted in the same way.
Laura Mulrooney: Some of them are what we would call a slope from farmers versus cliff formers um So you can see Jamie also drew kind of a profile to try to show what was eroded more.
Laura Mulrooney: Until you can see that we've got this layer here that has really, really it's got a good.
Laura Mulrooney: it's very coarse grained on which is also a picture of it over here and that layers sticking out, you can actually see there's like a shelf underneath it.
Laura Mulrooney: were then there's the units that are under at the House other a little bit finer grained there's probably i'm probably more matrix in there as well.
Laura Mulrooney: But you see you can draw a profile like this if you have the time that's also something that you could include.
Laura Mulrooney: In a written description, but so generally, we would call these ones that stick out those would be if there was a unit, we would say that that is a clip former.
Laura Mulrooney: vertices ones that are undercut we would call that a slope former because if you were to think about it on a much, much larger scale like something you would see out West.
Laura Mulrooney: These ones that are under cutter actually going to be weathering Downs they're going to be sticking out further at the base and they are at the top.
Laura Mulrooney: So does anyone else, want to show us their drawing and so maybe there's other things that stood out to y'all as well.
Laura Mulrooney: If not that's okay.
Anita Marshall: This is all fairly well liquefied like if I was gonna scrape a rock hammer across it.
Laura Mulrooney: Other than the red clays yes, the Red clays came off on everything we touched.
Laura Mulrooney: But the rest of it actually we we had a piece of it that we forgot the we left it department.
Laura Mulrooney: know but it's it's a rocket saw this is actually what they built the force out there's the St Augustine ford's is built, out of these units.
Laura Mulrooney: yeah so they've built an entire This is very.
Laura Mulrooney: Important you know how old do this.
Laura Mulrooney: Over 315 years yeah.
Anita Marshall: yeah yeah.
Laura Mulrooney: Five cannon blessed so it's very well provide them nothing's coming out.
Anita Marshall: yeah you know the fun fact about the the fort and the coke INA.
Anita Marshall: You know they built the fort extra thick because there's never been a Fort built out of this kind of rock ever anywhere.
Anita Marshall: And they were worried that it wouldn't be very Sturdy, so they built the walls just incredibly thick to make up for what they assumed was a wimpy rock.
Anita Marshall: And it turns out that because of the orientation of the shells and how their lives defied that they are incredibly good at absorbing shock so.
Anita Marshall: This word is famous for having cannonballs literally just bounce off the outside of the forest, so we would shoot cannibals at it and the shells would absorb the shock and the cannibals would just fall off that the exterior of the port, which I think is a really cool thing.
Definitely.
Laura Mulrooney: Okay, is anyone else wants to share their as go right ahead we're happy to once again we'll talk about anything else if there's any questions that you have about what future either um but if not, we can also move on for next.
Hazel Gordon: Year tazewell, then I have one question about the.
Hazel Gordon: The features that that are.
Hazel Gordon: diagonal lines in this case it's running through the show layer and and then the sort of terraces or whatever they are that separate.
Hazel Gordon: Other parts of the formation What are those do to do you know.
Laura Mulrooney: um I don't know that's a good point I do see the diagonal lines that you're talking about I know that there is betting, but clearly that's not the product of betting on.
Laura Mulrooney: It could be an original feature I don't think that it's a structural one.
Sandor Ricketts: couldn't be just partial alignment of the shells that you're you're seeing because of the alignment.
Laura Mulrooney: It absolutely could.
Laura Mulrooney: yeah.
Sandor Ricketts: Because it's in the upper layer as well, even though it's poorly started, you can see some lemonade and running through it.
Laura Mulrooney: that's true yeah no that's a good point they probably as you can notice, most of the shells on an upper surface are always flat on its face probably some sort of orientation.
Hazel Gordon: Thanks.
yeah.
Anita Marshall: yeah and it is interesting to know how very different that lower layer looks from even the the layer up above it, you know you've got the difference in Shell size but.
Anita Marshall: Even the amount of matrix like there must have been some significant shift in the depth positional environment between these.
Laura Mulrooney: yeah.
Sandor Ricketts: Just just a question is it a root system where the pencil sits or is it something else.
Laura Mulrooney: We think it's a root system based on these other pictures we saw be out, probably, we do think it's a rigged system.
So fossilized.
Laura Mulrooney: I don't know that it's fossilized um it's not really it's definitely dry right i'm pretty proud that they would break apart, when you grab them but um I wouldn't say fossilized.
yeah.
Anita Marshall: This is us on the beat.
Anita Marshall: This is this cross section he's he's trying very diligently.
Laura Mulrooney: he's doing a great job.
Nikita Kepezhinkas: Are the possible almost all by valve or or did you guys see some other stuff and.
Laura Mulrooney: I saw only by bows.
Okay.
Laura Mulrooney: yeah and they were all they were all pretty similar there was nothing that really necessarily stuck out in both like size and shape that they were all pretty much the same.
Laura Mulrooney: Within layers yeah within layers but i'm all by balance for sure.
Laura Mulrooney: Okay um so we're going to switch gears a little bit now we're actually going to go through a bit of a mapping exercise which, if you had looked at this Previously, it was not available, but we have now made it available this is going to be yourself three um.
Laura Mulrooney: And so we will encourage this to be a good group assignments, and I am going to share.
link.
Okay.
Laura Mulrooney: So this way we can all work on this together.
Here we go.
Laura Mulrooney: um so jam board is just it's a Google it's the same thing it's like a Google Doc or whatnot but it allows you to actually draw a little bit more freeform so.
Laura Mulrooney: The one that I just shared with y'all on if you go over like to the side here, you can select an eraser you can select a different type of pen or a paintbrush and you can select the color draw and there's an undo one as well um.
Laura Mulrooney: yeah so we encourage this is our mapping activity it's a bit different to try to make it work online in a website.
Laura Mulrooney: But we got a series of map here, this is along the blue Ridge parkway up in North Carolina.
Laura Mulrooney: And so we walk you through the units here which we encourage you to read through.
Laura Mulrooney: And we will kind of will we're here to answer questions, but we encourage you to talk with each other to try to make sense of this and will kind of take a backseat.
Laura Mulrooney: And then to if you make your observations, so we have each broken into a letter which then corresponds to the letter on the map.
Laura Mulrooney: To try to map this area.
Laura Mulrooney: Once again we're happy to answer questions as you go through this, but we do encourage you to work with each other more to try to bounce ideas off because field work any good mapping exercise, it should be between you and a group of partners um.
Laura Mulrooney: It works, a lot better if you work in teams that.
Derek Thorn: says that I need on access.
Derek Thorn: To.
Laura Mulrooney: Let me see i'm going to stop sharing for a minute, just so I can take a look at this.
Anita Marshall: And when you have a chance, will you just put the link to the website in the chat.
Laura Mulrooney: Of course Okay, so I think that the link, I think I change it to edit um let me know if it doesn't work and then also.
Laura Mulrooney: let's send this.
Derek Thorn: I have access, now, thank you.
Laura Mulrooney: yeah of course glad to go working, and so we all have access to so we'll kind of read through with you.
Laura Mulrooney: But we encourage you to work together and do this and, of course, ask any questions that can be either about mapping or about anything that you see.
ya.
Derek Thorn: know what did the letters mean again.
Laura Mulrooney: yeah so the letters correspond to a stop so.
Laura Mulrooney: You see, on the map that there's letter A and B and whatnot and if you go through, and you see at the bottom of that first page that I sent a link to.
Laura Mulrooney: The bottom of the page here i'll share my screen instead of trying to describe this.
Laura Mulrooney: Here, so at the bottom of the page there's a and so, if you click a it takes you to Okay, this is the observations that we made us at a.
Laura Mulrooney: And if you hit be here, it takes you to the observations we made it be.
Laura Mulrooney: Yes, and so obviously you're going to have to do some extrapolating to figure out what's going on between them.
Laura Mulrooney: And we expect that and we also know that this is over a State wide scale, so we encourage you to be generous with that, but also just keep in mind that there's nothing too complicated going on here.
Anita Marshall: may have missed this part do we have designated colors that we're using for the different.
Anita Marshall: Should we, like each take letter or should we talk through each one.
Laura Mulrooney: um we can do whatever y'all want to do if you want to do a letter at a time and determine what what you think it is, I think that might be the best way that's more collaborative yeah yeah.
Laura Mulrooney: Do you want me to share my screen, as we go through this i'm.
Anita Marshall: Sure, we could yeah just build it.
yeah.
Laura Mulrooney: Okay, so I also encourage you to have this looked up just pulled up just because some of these think I have some 360 pictures that are probably easier this one's really bad sunless.
Laura Mulrooney: they're probably easier for y'all to interact with rather than me trying to show you around.
Laura Mulrooney: But I also encourage you to possibly have the.
Laura Mulrooney: original page pulled up as well just because we do provide you these symptoms of what each unit looks like.
Laura Mulrooney: And so you can talk with each other to see what you think this is there's only three units that we're looking at it's it's going to be one of those three on.
Laura Mulrooney: And I also include reference pictures so.
Laura Mulrooney: yeah feel free to talk with each other and also feel free to to draw it go ahead and draw like i'm on the map, if you think you know what's going on.
Laura Mulrooney: yeah if you've never mapped before what your what your main goal right now is to look at our three units that we described.
Laura Mulrooney: In this on the first page and then, as we go through each letter you want to make connections what rock like what what rock we're looking at now which.
Laura Mulrooney: Like what minerals are in it, what color is look like and how does that coincide with one of those three formations that we talked about in the beginning.
Laura Mulrooney: Okay, so Does anyone want to point out any observations that they see.
Laura Mulrooney: I will say that the color of the crop should be a clue as well as the presence of these white veins throughout i'm.
Laura Mulrooney: Sending one have an idea anyone want to shout out what they think the answer is.
Laura Mulrooney: Or you can just go ahead and put it on the map it's okay to be wrong, we can figure that out.
Sandor Ricketts: i'm.
Sandor Ricketts: Not the teachers I won't talk hello, and the rest of the guys the rest of us, you want to try and do it, so we.
Sandor Ricketts: Can just figure out.
Sandor Ricketts: What it is.
Sandor Ricketts: Who wants to do the drawing.
Anita Marshall: I can try some mouse drawing.
that's fine.
Sandor Ricketts: Alright So what do have a based on the look of it i'm figuring is that cohesive group.
Derek Thorn: yeah that's what i'm thinking as well that a very distinct white vein is very characteristic of that group.
Derek Thorn: and seeing.
Derek Thorn: high volume of all for creation in it.
Anita Marshall: So i'm just gonna put a little.of color next to the a because, since we don't know what these other outcrops are going to be.
Anita Marshall: You know, we can't really infer how much of this to color blue so i'm just going to put a little.by the a and then we can sort of draw in our larger math later, when we know what all the colors are.
Sandor Ricketts: OK that's fine be.
Sandor Ricketts: I guess these the ashy metamorphic.
Derek Thorn: that's i'm thinking as well.
Derek Thorn: Do we know which i'm group came first.
Derek Thorn: Which is the oldest group do you know.
Nikita Kepezhinkas: there's um there's there's time on the page right before a where you're looking at three unit to give the agent, I believe that created the older.
Derek Thorn: Okay.
Nikita Kepezhinkas: I think most of billionaire.
Nikita Kepezhinkas: And then I can update to the other.
Sandor Ricketts: 720 266 and 770 669.
Sandor Ricketts: Though sorry i'm The co leader is 1600 to 541.
Sandor Ricketts: Then the ash is 7182686, then the alligator is 717 2669 okay.
Sandor Ricketts: Alright, so we have be Mr ice.
Sandor Ricketts: i'm leaning leaning towards the actual again on that one because of the reddish broaden their along with meaning.
Anita Marshall: hang on I gotta get sidetracked.
Derek Thorn: This is the.
Sandor Ricketts: Which one you thinking i'm thinking to ash.
Derek Thorn: On the plans are throwing me off.
Sandor Ricketts: I ignore the first one, look at the 360 because what i'm feeling is the second photograph, for example, of the chest, or you have that reddish i'm not sure if that's i'm just weathering that showing up along with it, which dominant, on the other, photographs.
Anita Marshall: yeah this one's definitely a little trickier.
Anita Marshall: Okay we're gonna go with the ash on this one.
Sandor Ricketts: I think that's the closest one to work with right no.
Sandor Ricketts: yeah because we're not getting the Nice.
Sandor Ricketts: Nice veining and grey from the.
Sandor Ricketts: Quito and then the alligators a little bit harder to decipher any callers or patterns.
Derek Thorn: look into 3D close up matt.
Sandor Ricketts: I don't think that's a nice.
Sandor Ricketts: alligator.
back for me.
Derek Thorn: Which one is this the D.
Sandor Ricketts: And this is a.
Sandor Ricketts: d yeah This is where i'm Dino.
Derek Thorn: yeah I think that's the.
Sandor Ricketts: Your things to Quito.
Sandor Ricketts: For D.
Derek Thorn: Is that what you thought it was as well.
Sandor Ricketts: don thinking more to the the ash because of.
Sandor Ricketts: The excessive weathering and.
Sandor Ricketts: From the well yeah the excess of weather in there we're seeing a lot of the red the iron oxide.
Nikita Kepezhinkas: And there's none of that veining that court court stuff yeah.
Sandor Ricketts: This thing to courts veining.
Derek Thorn: Looking at the the roadside outcrop.
Derek Thorn: sleep there's some.
Nikita Kepezhinkas: Some what that.
Derek Thorn: looks like there might be some courts veins very faint i'm looking at the road.
Nikita Kepezhinkas: yeah but the.
Nikita Kepezhinkas: first one was like they were like a foot wide and they were like 20 of them.
Nikita Kepezhinkas: yeah right.
Sandor Ricketts: A lot more distinctive.
Sandor Ricketts: And the fracturing is a lot more on the D.
Sandor Ricketts: Which kind of looks like the ashes well.
Derek Thorn: yeah.
Sandor Ricketts: i'm sure we'll get to answer later on, so we can look into stick one in, and it was to fire off.
Derek Thorn: yeah i'm really looking at it now yeah and i'm going to yeah I agree with you guys, that is, that ash.
Sandor Ricketts: All right, well, that sketched in and either.
Derek Thorn: So right now yep.
Sandor Ricketts: nice to have a limited as well image, but we're back today heavily weather and fractured.
Derek Thorn: or he.
Sandor Ricketts: Or am I, on the road when i'm on dx actually.
Derek Thorn: Very blue.
Sandor Ricketts: For D.
Derek Thorn: or E, excuse me, is very blue.
Sandor Ricketts: I think i'm getting confused as to where.
Sandor Ricketts: We were an ear will indeed.
Hazel Gordon: yeah I thought we all were kind of identify D.
Anita Marshall: yeah I think.
Hazel Gordon: I think he looks like an alligator because of the blue color but I don't see much more.
Derek Thorn: You looks like alligator.
Sandor Ricketts: What did we.
Sandor Ricketts: What did we put for see.
Derek Thorn: ash.
Sandor Ricketts: ash okay.
Sandor Ricketts: and be what we're calling the.
Anita Marshall: ash.
Sandor Ricketts: And then he yeah that's the blue yeah.
Sandor Ricketts: alligator alligator.
Anita Marshall: Alright, so we're back to striking stuff here.
Sandor Ricketts: throws off on these PICs, but we can see.
Sandor Ricketts: The 360s fractured can receive endings yeah we can still see veining on a 360 when those factor.
Derek Thorn: On F there we go.
Sandor Ricketts: What what you're thinking.
Sandor Ricketts: Well we'll have to keep in mind that the ash does have meaning as well, but it's more for darker color with the training versus that i'm more actually.
Nikita Kepezhinkas: into Kuwait, also on fully aided relatively or it's just nice thick right so.
Nikita Kepezhinkas: it's up at the unit description yeah.
Anita Marshall: Good point.
Anita Marshall: But it's lighter and I mean the the reference pictures for the ashland too dark for this rock maybe not.
Sandor Ricketts: Any other pictures I don't think any of the pictures really do it does justice.
yeah.
Anita Marshall: All right, I can just put what are we gonna put for now, maybe ash.
Sandor Ricketts: yeah we can put an astronaut question mark.
Sandor Ricketts: So JI.
Sandor Ricketts: JI, we can see if we go with a Quito for g.
Anita Marshall: yeah.
looks like.
Sandor Ricketts: we're.
Sandor Ricketts: Having a fractured when the oxidation staining similar to the action.
Sandor Ricketts: Everybody agrees with the ash for that one.
Derek Thorn: For it.
yeah.
Hazel Gordon: I think I would.
Sandor Ricketts: yeah yeah.
Sandor Ricketts: looks at the same thing.
Hazel Gordon: yeah pretty orange.
Hazel Gordon: orange as again.
Sandor Ricketts: yeah we go to actually do any up.
Oh.
Sandor Ricketts: Based on that photograph in the bottom right.
yeah.
Sandor Ricketts: yeah.
Nikita Kepezhinkas: What we're saying like really small.
Nikita Kepezhinkas: repeat right.
Nikita Kepezhinkas: That are sorry go ahead.
Anita Marshall: Sorry.
Sandor Ricketts: No yes in the bottom right was really small in terms of scaling.
Nikita Kepezhinkas: yeah that's The keys right on the left of that right so that's like that's like miniscule right.
Sandor Ricketts: yeah, but if we look at like the key look at both queda image on the first one is still just a keys just a key right beside that vein, which is not a vein isn't much thicker than the key.
I guess.
Sandor Ricketts: I know we have that darker Gray.
Sandor Ricketts: Or is it to listen to the black.
Derek Thorn: we're on K now.
Sandor Ricketts: Jay Jay.
Hazel Gordon: queda did we say.
Derek Thorn: yeah.
Derek Thorn: I know for Jay we said ash.
Really.
Sandor Ricketts: The letters at the top, because I got confused with the letter being at the bottom, but the letter that we're we're on is at the top.
Hazel Gordon: Top yeah so I still on Jay yeah.
Nikita Kepezhinkas: I look back at stuff a and the outcrop pictures are I mean those are pretty big thing right.
Sandor Ricketts: Now so you're you're thinking you're thinking J might ash instead of Quito.
Nikita Kepezhinkas: yeah I don't yeah I don't think it's the alligator I think it's part of it too i'm leaning more ash, but I mean I don't know what you guys think so.
Sandor Ricketts: The fracturing is there oxidation is there.
Sandor Ricketts: Anybody.
Sandor Ricketts: Have a darker color.
Hazel Gordon: But I was looking at the upper left to end photo and the veins look fairly large their their cause vertical this point.
Sandor Ricketts: let's pick one and stick a question.
Nikita Kepezhinkas: On the left hand photo hazel.
Hazel Gordon: yeah upper upper left where you see the horizontal looking by vertical veins.
Hazel Gordon: whitish.
Sandor Ricketts: The 360 you're talking on the left or.
Hazel Gordon: Oh sorry i'm looking at the field guide.
Hazel Gordon: Well i'll go with whatever you guys think.
Anita Marshall: Are we painted site which which page we.
Sandor Ricketts: Were on Jay.
Sandor Ricketts: that's a question mark, just in case.
Hazel Gordon: yeah there's orange and there's rain.
yeah.
Hazel Gordon: Why not.
Sandor Ricketts: All right, okay.
Derek Thorn: yeah.
yeah.
Hazel Gordon: Good for that.
Hazel Gordon: l.
Hazel Gordon: Sure, oh oh.
Hazel Gordon: They even said it.
Nikita Kepezhinkas: Did yeah and that whole paragraph.
Hazel Gordon: yeah.
Nikita Kepezhinkas: Right good thing we got it before we read it right.
Hazel Gordon: Oh gosh um.
Sandor Ricketts: Right yeah.
Derek Thorn: This looks like ash.
Derek Thorn: Is it has cemetery and that its.
Derek Thorn: Center and metamorphic.
Laura Mulrooney: So you don't need to draw point for l you can just read what's written there and skip it.
Hazel Gordon: Oh.
Hazel Gordon: Okay.
Ashton.
Sandor Ricketts: For him.
Nikita Kepezhinkas: I think I was already labeled great, but it.
Nikita Kepezhinkas: also looks like a Granite picture is almost.
Anita Marshall: that's labeled as like something different than everything else.
Laura Mulrooney: Okay yeah we'll talk about it when you finish.
When i'm no.
Hazel Gordon: No yes.
Derek Thorn: i'm thinking alligator.
Nikita Kepezhinkas: yeah.
Sandor Ricketts: it's missing Michael Sheen that's, the only thing.
Sandor Ricketts: are actually the photograph on the left here, we could probably go to alligator.
Sandor Ricketts: Beside that yellow blue sandal blue black sandal it has that.
Sandor Ricketts: Alright, so we'll go.
Sandor Ricketts: next one.
and
Hazel Gordon: is again.
Hazel Gordon: Those veins look weird.
Sandor Ricketts: Open probably go to colada is not as not having a factor so they'll have a lot of oxidation on the fact that that keys, there were probably getting a scale and i'm vain or something mm hmm.
Sandor Ricketts: Okay yeah we can go on.
Hazel Gordon: Okay.
Sandor Ricketts: yeah I think that's it.
Hazel Gordon: Closing step three.
Laura Mulrooney: Okay, so we're not going to talk about this a little bit.
Laura Mulrooney: So good job you all, did you met first mapping exercise um you there, most of them are right there's only I think what was it two or three that you, you debated on and you went with the wrong one but that's okay.
Laura Mulrooney: So let's talk about what you would do once you made these observations first um so I know you probably didn't have a ton of time to actually read through what that the beginning but.
Laura Mulrooney: there's nothing overly complicated going on here, we were trying to trick you there's no sorts of if there are some complicated things, but I did not include them on this map.
Laura Mulrooney: So what we know is there's going to be a simple progression of units, so at this point if you had this as a real mapping exercise that say your your field methods class have given you or your field camp had given you.
Laura Mulrooney: suppose that this is what the observations you came back on day one, and you have a whole nother day out in the field, so at that point you'd want to say, well, what date what spots, that we have questions on which i'm here i'll share my screen so.
Laura Mulrooney: Based on what you all have it looks like this areas where we would need to do a little bit more work because that seems a little bit out of character it's going to be hard to fit a contact.
Laura Mulrooney: That can be a straight line to get all of the units to match up and then also this one up here would be something we might want to look at again um.
Laura Mulrooney: So, once you went out there, and you would make some more observations you could then which, if you want to go to the closing.
Laura Mulrooney: So these were the sops and we can go through, and actually talk about the sops as we labeled them as they are.
Laura Mulrooney: And so I know that there are colors are a little bit different than yours, because we did this in a different program, to put it together here.
Laura Mulrooney: But so all of these should have been the ash and so now that you've got this, this is not what you turn in you can't just put dots on the map and turn it in, unfortunately.
Laura Mulrooney: But with That being said, this is like a is an easily hundred 200 mile area and so you're going to be inferring some things In between there.
Laura Mulrooney: And so what you want to do is you would ideally if you were in the field, you would have taken some striking depths, you would have actually seen some contacts which.
Laura Mulrooney: We did see some contacts, but there was no place to pull the car off them, unfortunately, so we could not get pictures of them.
Laura Mulrooney: But you'd want to actually fit a contact line here, and so you start to see well Okay, we want all the pinks to be together we went all the blues to be together and we want all the purple's to be together or in your case, all the blues, the Greens and the reds.
Laura Mulrooney: And so to fit that to something you might have something that ends up looking like this.
Laura Mulrooney: So this is a simple, this is a simplified version of what the actual map area looks like.
Laura Mulrooney: But if you wanted to see that we did include down here which you can see, to the actual, this is the actual God North Carolina state map state geologic maps and you can see that, based on where our stops we're located, this is a pretty good assumption, based on the stops that we gave you.
Laura Mulrooney: I will talk a little bit about l which we didn't mention, which is going to lead us into.
Laura Mulrooney: Our little bit of our next activity so l is the grandfather mountain window, which is it's a fault system where there's a bunch of.
Laura Mulrooney: You actually have some false sort of slide it off it's a window into looking into other rocks that are below it and that's where we're our next stop is going to be to look at.
Laura Mulrooney: And, but let's go back and let's look at E G and and and talk about the things that we were hoping that she would have noticed and on all of them, you debated between them.
Laura Mulrooney: And that's Okay, I mean you're not going to get them you're not always going to get everything right the first try so let's go through.
Anita Marshall: I also think that it's useful, especially in a virtual experience to think about not just oh I got that wrong but think about like, if I were in the field, what information would help me better identify this rock.
Laura Mulrooney: Exactly, and we can talk about that some to let's start with.
Anita Marshall: me if you know my missing that would make this easier, more straightforward.
Laura Mulrooney: And that's very helpful.
Anita Marshall: About two.
Laura Mulrooney: yeah so we can talk about some of the things that cause problems for this one.
Laura Mulrooney: I didn't want to cross the road, because it was coming out of the other side of a tunnel and so all the pictures that you have are taken from the other side of the road which, based on the lighting to does not does not give this area justice.
Laura Mulrooney: So he if we look at this here, you can see that it's it's really hard to see the whole rock is in shadow and it's actually I think it's wet to which does not help um but so looking at this point, you want to pull up the dashboard.
Laura Mulrooney: So what we're hoping, is that you would compare this to some of the other ones that you see later and come back to it, so this is going to be part of the ash and.
Laura Mulrooney: The ashes, a extremely varied he came to our discussion yesterday we actually had several people present on this.
Laura Mulrooney: But the ashes extremely varied it's a Meta sedimentary units, there are areas where there's marbles in this unit, there are also those that range them they're typically it has that rusted to it, but not always.
Laura Mulrooney: up close.
Laura Mulrooney: You probably would have seen there's affiliation, but you can't see that from these pictures.
Laura Mulrooney: and also the trees, there may be as difficult so it's worthwhile to note the reasons why you can't notice it from a virtual format and.
Laura Mulrooney: Think about in the field, how you would have fixed that so in the field, ideally, you would have actually been able to get close to this and look at it and see Okay, well, I see affiliation or.
Laura Mulrooney: Okay, I can actually see what kind of a rock this is, I don't see any veins I don't see the blue color that is typical of the alligator um.
Laura Mulrooney: So our next one that will talk about is g.
Laura Mulrooney: So this one I included to try to trick us.
Laura Mulrooney: But uh so.
Laura Mulrooney: This one, if you look at these pictures, you can see that it is a little bit rusted um I think that's some of the things, there are some small veins that are throughout here, but I think some of the things that y'all might have thought were veins are actually just the weathering pattern.
Laura Mulrooney: I mean, there are a few things, but I think it's more of a banding they're more they're actually deformed a little bit here.
Laura Mulrooney: Let me just check the chat sorry see that.
Laura Mulrooney: um so.
Laura Mulrooney: Ideally, what she would look at here, as you can see that the color that it's rusting and none of the other units we're going to rust read um.
Laura Mulrooney: With That being said, this is actually an area where we have a it actually changes from down here, this is just an up here is a nice so it's a contact within the unit.
Laura Mulrooney: And I did include some pictures of some of the veins that are running through here in hopes that I could confuse you and make you think that they were likes.
Laura Mulrooney: what's there not this is just a, this is a secondary vein over here, and this is just part of the affiliation.
Laura Mulrooney: And so, then the last one was an.
Laura Mulrooney: So an.
Laura Mulrooney: What I was hoping to see and the is this picture, right here it's blue.
Laura Mulrooney: Which is characteristic feature of that Union granted you didn't see it in any of the other pictures of this one, but it's also to show you that there can be a lot of variation between.
Laura Mulrooney: units and if you'd have more time with the description i'm sure that you would have noticed that, too, but it's fully it and you can see affiliation here.
Laura Mulrooney: This here might look like a vein is that's just a pattern of web weathering these black and white stripe that are vertical the affiliation it's actually running.
Laura Mulrooney: Down tip like that and it's actually where this is fracturing to, and so you can see in this close up picture, this is blue that's a characteristic feature of this unit and also, if you look at this here it kind of is tend to blue on a larger scale as well.
Laura Mulrooney: But yeah I encourage you later to read through our actual description, where we actually give you some.
Laura Mulrooney: Of we give a little bit more of relation of how you would tie this into a real world mapping exercise where, if you were out in the field to also think about what she would want to do differently if you had more time and you were out in the field.
Laura Mulrooney: You ideally would not base an entire mapping exercise on what did I give you like 15 points you actually would want to look at between them and see if you could find contacts, but based on a mapping exercise of the scale and something that's virtual.
Laura Mulrooney: Managing expectations is also something that I think is is good.
Laura Mulrooney: Does anybody have any questions that they want us to talk about specifically related to any part of this on any observations that you made or any of them are final uh I guess results from the map, which I can.
Laura Mulrooney: put up again, or you can just see it's in the West, the closing, which is not showing up.
Laura Mulrooney: So, this would be the final episode anyone have any questions they want us to talk about.
Laura Mulrooney: If not, we have other things that we can do we've got about 30 minutes about 35 minutes left.
Laura Mulrooney: We also if you'll have well at this point, I guess, say, if you have any questions if you had a chance to look through this before.
Laura Mulrooney: we're happy to talk about any of the stops, we do have one last little activity for y'all to do but uh.
Laura Mulrooney: We want to make sure that we have time to answer if you have any questions about anything that we've shown here either at this in person or about the other ones.
Laura Mulrooney: And also, if you have questions later I encourage you to email me I think my email is included throughout here on throughout the STOP and also through GSA um I think it's included in the intro.
Laura Mulrooney: But.
Laura Mulrooney: yeah if nobody has any questions I can go to our next topic, but I don't want to rush y'all either.
Laura Mulrooney: Okay, so I guess the next thing that will kind of talk about unless anyone has please ask questions cut me off go red head for it.
Sandor Ricketts: I think if we had questions would ask you're actually doing a pretty good job with this whole thing so we're good I think we're good.
Okay.
Laura Mulrooney: So the next thing that we'll talk about a little bit is.
Laura Mulrooney: Which is kind of what I included on the map his grandfather mountain, which is a window So this was not previously available to you, so you could not have looked at it beforehand.
Laura Mulrooney: But we can kind of read through this together, and then we actually would like y'all to do a bit of said description writing.
Laura Mulrooney: So let's see so the grandfather mountain window is this a series of.
Laura Mulrooney: Various sized city sedimentary rocks there's a lot of everything from shales and slates all the way through there's some pretty massive conglomerates.
Laura Mulrooney: So I encourage you to pull this up on your own to and look through but to start with there's a picture and let's start with this guy here.
Laura Mulrooney: Too right, I said description of and so we're gonna.
Laura Mulrooney: we're gonna write this too, so this will be kind of like our first exercise at the beginning, where we're going to give you the little prompting roll all right oh something together and then we'll come back and share it um.
Laura Mulrooney: But, so I encourage you, this is a Meta sedimentary rock.
Laura Mulrooney: But we're going to write a description of it, and so I look at the different one to notice the different class if you can figure out any sort of what's between them, if you can tell.
Laura Mulrooney: What if you can write down colors if you had noticed any fossils which I don't think there's any facilities are pretty old rock.
Laura Mulrooney: yeah so we're going to do a few of these descriptions we'll start with this one.
Laura Mulrooney: yeah and we'll meet back and we'll go i'll be here, where we're going to write descriptions to and we'll share them in about.
Laura Mulrooney: 710 minutes again, are there any questions before we start this.
Laura Mulrooney: Okay we'll be here we're just going to be writing to.
Sandor Ricketts: I learned one question.
Laura Mulrooney: Okay, so let's talk about some of the things that could have been included in your description and some of the things that you probably can't tell, but how you would have actually figured them out in the field.
Laura Mulrooney: So, to start with, and your description, you would have wanted to note the color of the class which you can see, like this is one here that's kind of like a grayish and there's some over here that are a little bit read on.
Laura Mulrooney: You also would want to note the size and the size range and so in this picture all that really stands out are these bigger ones um if you were to look closer you probably would notice that there are some smaller ones that are borderline sand size that have filled in between.
Laura Mulrooney: You would also wanted to make note of that you would want to note the actual shape and how round these grains are so I would say that.
Laura Mulrooney: These are probably sub rounded sub angular balance, a little bit more angular but they're they're definitely not angular they're not something that looks like it's just a fracture they have some rounding to them.
Laura Mulrooney: And then you also would want to note in this is one that gets a little bit more tricky because this isn't a Meta conglomerates into if things are showing any sort of elongation or if they're more cynical.
Laura Mulrooney: And so, some of these grains are elongated but uh there are some I think there's some pictures later on, of like entire walls of this, I think.
Laura Mulrooney: I think there are pictures of it yeah like there's just a lot, and so, if you have something like this that's been under as much stress and it's at this age.
Laura Mulrooney: elongation is a little bit difficult to tell if it's something that is a feature of when it was deposited or if it's something that has been whether that way.
Laura Mulrooney: or not, whether that has been metamorphose to that point um.
Laura Mulrooney: If you were there in person, you would want to take note of the matrix, which is what is actually holding this together.
Laura Mulrooney: And so, generally, the three matrix is that are the most expected, there are other things that it can be bummed out would be something that's going to be calcite.
Laura Mulrooney: would have courts or some sort of hematite i'm from looking at this it's probably not hematite just because we would expect that to be a whole lot better and actually I do know that it's courts because i've read some papers about it.
Laura Mulrooney: But that's something that you might not even be able to tell them the field um if you had hcl with you, you could put that on it, and if you weren't in an environment that that was going to be super common if it fits that might tell you something um.
Laura Mulrooney: But it's not something that.
Laura Mulrooney: If you're somewhere out West if you're in a desert environment, everything is going to fit and so that's not going to be something that's particularly useful but it's something where, if you were to cut an actual thin section of the area between.
Laura Mulrooney: If it's courts or calcite you're going to see it it's going to be very clear at that point um another thing that you once again, you can't tell us from a picture, but as you would look at porosity.
Laura Mulrooney: Which is how much space, there is actually between these grains which, once again, because this is a mega conglomerate there's not much for us the anymore.
Laura Mulrooney: The courts has pretty much filled all of those but that's something that you would tell by putting an actual need pour a little bit of water on it and see how quickly it actually gets absorbed into the rock.
Laura Mulrooney: And you also might have noticed, there are some courts veins throughout here on this entire area has a lot of course veins there's a lot of courts here a lot of solicit fluid, which is also kind of closes in that it's probably a silica that is holding the rock together.
Laura Mulrooney: I will then also say, is once you actually make your observations.
Laura Mulrooney: That allows you to make some sort of interpretation which you don't want to do until after you've made the observations.
Laura Mulrooney: And so that's where it comes well if we have grains that are this large, these are some pretty big class, this is a good size conglomerate on.
Laura Mulrooney: This is not something that you would expect to see on the beach you wouldn't go to Florida beach and sand size that are sand grains that are going to be like 10 centimeters big on.
Laura Mulrooney: And so that's something where you can start to think about the actual deposition or environment um.
Laura Mulrooney: it's also something that you would want to notice how how much sitting there is are all the grades, the exact same size or are there, as I mentioned previously, you might notice of their smaller grades that have filled in between.
Laura Mulrooney: that's something that you would want to take note of and once again it's something that's a little difficult to different pictures, but we just want to get your thinking and practicing this so that when you do end up out.
Laura Mulrooney: In the field and you're expected to make these observations it's not your first time trying to do it.
Laura Mulrooney: So, are there any questions or anything that y'all want to talk about at this point.
Sandor Ricketts: yeah.
Laura Mulrooney: yeah.
Sandor Ricketts: i'm a couple questions.
Sandor Ricketts: Yet a photograph is kind of not the best to work with.
Sandor Ricketts: Is it classroom matrix supported.
Laura Mulrooney: It is matrix supported.
Sandor Ricketts: This matrix supported.
Yes.
Sandor Ricketts: I was thinking more cost.
Laura Mulrooney: yeah it is matrix supported so what that means, if anyone doesn't know is that means that the class are not all touching there are things between them better, making it so that if.
Laura Mulrooney: If it were class supported, they would all be the class the matrix wouldn't actually be having any pressure on me wouldn't be holding things together well be holding these it wouldn't be.
Laura Mulrooney: There would be matrix supported means that there is more space between the class for the matrix to take up room, because the simpler way to say it okay.
Hazel Gordon: yeah yes.
Laura Mulrooney: You have other questions.
Hazel Gordon: yeah I have a question about the age and can we assume that most or possibly all conglomerates or freshwater to deposited.
Laura Mulrooney: i'm not sure if they're fresh water deposit it or not, i'm.
Hazel Gordon: around it so grounded.
yeah.
Sandor Ricketts: I i'm going to lean more towards freshwater deposits, because if you're looking at conglomerates you're going to be transporting material over usually in a river channel of some sort.
Sandor Ricketts: yeah so that's what you guys do freshwater anything that's salt water is going to be deposited within the sea, but for that sort of a class size that would attract should have been transferred over large distance for it.
Sandor Ricketts: for you to get smaller green so i'm thinking large large class.
Sandor Ricketts: Sub rounded to some angle, as you said, to transport it a little distance probably during a flood event, based on the size of the Greens.
Hazel Gordon: Yes, the class yeah taken from the West, which I live that's the assumption, I believe, but I was wondering about the age has anybody, you know gotten some kind of age with us.
Laura Mulrooney: I think that it's debated um I think that I wanted to put an agent here and I found conflicting pieces of information.
Laura Mulrooney: If there are some that have dated it, I think, to 1.6 billion, I think it's an age that i've also seen i've also seen 1.2.
Laura Mulrooney: So it seems that there is a little bit of it's not.
Hazel Gordon: Not recent.
Laura Mulrooney: Thank you, yes.
Laura Mulrooney: No they're not recent they're old.
Laura Mulrooney: yeah um.
Laura Mulrooney: But I think that's the end of the activities that we have planned for y'all if y'all have other questions once again about anything that we've done today on by all means ask away it's been great having y'all we had fun, I hope that you learned something I hope you had a good time.
Hazel Gordon: i'd like to tell you that this is my first ever geology feel to you well sorry I had one in college a day decades ago, but thank you very much, you did a great job in helping me understand the rocks.
Laura Mulrooney: i'm glad you enjoyed it i'm so glad you could come.
Hazel Gordon: Thank you.
Sandor Ricketts: I will not do that as well, and you guys did a good job we put together pretty good con presentation, so it was fun.
Laura Mulrooney: i'm glad y'all enjoyed it, as I said before, if he come up with other questions later feel free to send them to us um I know my email is listed in the website and once again through GSA I think you can get our contact information through there as well.
Derek Thorn: Thanks guys, thank you.