GSA Annual Meeting in Phoenix, Arizona, USA - 2019

Session No. 68
Sunday, 22 September 2019: 1:30 PM-5:30 PM
Room 228AB, North Building (Phoenix Convention Center)

T116. The Ordovician Earth: Integrated Perspectives on the Fossil and Rock Records

Paleontological Society; Paleontological Research Institution; IGCP 653: The Onset of the Great Ordovician Biodiversification Event; IGCP652: Reading Time in Paleozoic Sedimentary Rocks

 

Matthias Sinnesael, Julie De Weirdt, Christopher T. Conwell, Joshua B. Zimmt, Y. Datu Adiatma and Teresa D. Avila, Advocates
Paper #
Start Time
1:30 PM
INVESTIGATING REDOX DYNAMICS ACROSS THE CAMBRIAN-ORDOVICIAN BOUNDARY: A DEEP-WATER PERSPECTIVE FROM BALTICA
KOZIK, Nevin1, YOUNG, Seth A.2, AHLBERG, Per3 and OWENS, Jeremy D.2, (1)Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL 32306, (2)Department of Earth, Ocean, and Atmospheric Sciences, Florida State University, National High Magnetic Field Laboratory, Tallahassee, FL 32306, (3)Department of Geology, Lund University, Sölvegatan 12, Lund, SE-223 62, Sweden; Lund University, Department of Geology, Sölvegatan 12, Lund, SE-223 62, Sweden
1:45 PM
OCEAN REDOX CONDITIONS IN A LESS OXYGENATED ORDOVICIAN WORLD: A CASE STUDY ON THE NON-EUXINIC KATIAN ORGANIC-RICH MUDROCKS OF SOUTHERN ONTARIO
LU, Xinze, TRUONG, Ryan and KENDALL, Brian, Earth and Environmental Sciences, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada
2:00 PM
THE CLIMATIC SIGNIFICANCE OF LATE ORDOVICIAN–EARLY SILURIAN BLACK SHALES (Invited Presentation)
POHL, Alexandre, Department of Earth Sciences, University of California Riverside, 900 University Ave, Riverside, CA 92521; Biogéosciences UMR 6282, Université Bourgogne Franche-Comté, CNRS/UBFC, 6 boulevard Gabriel, Dijon, F-21000, France, DONNADIEU, Yannick, CNRS, CEREGE, Aix en Provence, 13545, France, LE HIR, Guillaume, Institut de physique du globe de Paris, 1 rue jussieu, Paris, 75005, France and FERREIRA, David, Department of Meteorology, University of Reading, Whiteknights, PO Box 217, Berkshire, Reading, RG6 6AH, United Kingdom
 
2:20 PM
Discussion
2:30 PM
DID EARLY LAND PLANTS PRODUCE A STEPWISE-CHANGE IN ATMOSPHERIC OXYGEN DURING THE LATE ORDOVICIAN (SANDBIAN ~ 458 MA)?
ADIATMA, Y. Datu1, SALTZMAN, Matthew R.1, YOUNG, Seth A.2, GRIFFITH, Elizabeth M.3, KOZIK, Nevin P.4, EDWARDS, Cole T.5, LESLIE, Stephen A.6 and BANCROFT, Alyssa M.7, (1)School of Earth Sciences, The Ohio State University, 275 Mendenhall Laboratory, 125 S Oval Mall, Columbus, OH 43210, (2)Earth, Ocean, and Atmospheric Science, Florida State University, 108 Carraway Building, Tallahassee, FL 32306, (3)School of Earth Sciences, The Ohio State University, Mendenhall Laboratory, 125 S Oval Mall, Columbus, OH 43210, (4)Department of Earth, Ocean, and Atmospheric Sciences, Florida State University, National High Magnetic Field Laboratory, Tallahassee, FL 32306, (5)Geological and Environmental Sciences, Appalachian State University, 572, Boone, NC 28608, (6)Department of Geology and Environmental Science, James Madison University, 801 Carrier Drive, MSC 6903, Harrisonburg, VA 22807, (7)Indiana Geological and Water Survey, Indiana University, Bloomington, IN 47405
2:45 PM
REFINING THE AGE OF THE MIDDLE-LATE ORDOVICIAN INFLECTION POINT IN SEAWATER 87SR/86SR USING CONODONT APATITE
AVILA, Teresa D., School of Earth Sciences, The Ohio State University, 125 South Oval Mall, Columbus, OH 43210, SALTZMAN, Matthew R., School of Earth Sciences, The Ohio State University, 275 Mendenhall Laboratory, 125 S Oval Mall, Columbus, OH 43210, GRIFFITH, Elizabeth M., School of Earth Sciences, The Ohio State University, Mendenhall Laboratory, 125 S Oval Mall, Columbus, OH 43210 and OLESIK, John, School of Earth Sciences, The Ohio State University, 125 S. Oval Mall, Columbus, OH 43210
3:00 PM
IDENTIFYING PRECESSION AND OBLIQUITY CYCLES IN THE ORDOVICIAN?
SINNESAEL, Matthias, Department of Geology, Ghent University, Ghent, 9000, Belgium; Analytical Environmental and Geo-Chemistry (AMGC), Vrije Universiteit Brussel, Brussels, 1050, Belgium, DESROCHERS, André, Department of Earth and Environmental Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada, RASMUSSEN, Christian Mac Ørum, Natural History Museum of Denmark, Copenhagen, DK-1350, Denmark, CLAEYS, Philippe, Research Group of Analytical, Environmental, and Geo- Chemistry, Division of Earth System Science, Vrije Universiteit Brussel, Brussels, 1050, Belgium and VANDENBROUCKE, Thijs R.A., Department of Geology, Ghent University, Krijgslaan 281 / S8, Ghent, 9000, Belgium
 
3:15 PM
Break
3:30 PM
COORDINATED BIOTIC AND ABIOTIC CHANGE DURING THE GREAT ORDOVICIAN BIODIVERSIFICATION EVENT: DARRIWILIAN ASSEMBLY OF EARLY PALEOZOIC BUILDING BLOCKS (Invited Presentation)
STIGALL, Alycia L., Department of Geological Sciences and OHIO Center for Ecology and Evolutionary Studies, Ohio University, 316 Clippinger Laboratories, Athens, OH 45701, FREEMAN, Rebecca L., Department of Earth and Environmental Sciences, University of Kentucky, Lexington, KY 40506-0053, EDWARDS, Cole, Geological and Environmental Sciences, Appalachian State University, 572, Boone, NC 28608 and RASMUSSEN, Christian Mac Ørum, Natural History Museum of Denmark, Copenhagen, DK-1350, Denmark
3:50 PM
DID ALTERNATING DISPERSAL AND VICARIANCE DRIVE BIODIVERSITY INCREASE DURING THE GREAT ORDOVICIAN BIODIVERSIFICATION EVENT? A PHYLOGENETIC TEST USING BRACHIOPODS
CENSULLO, Shaolin Meliora, Geological Sciences, Ohio University, 316 Clippinger Lab, Athens, OH 45701 and STIGALL, Alycia L., Department of Geological Sciences and OHIO Center for Ecology and Evolutionary Studies, Ohio University, 316 Clippinger Laboratories, Athens, OH 45701
4:05 PM
RECONSTRUCTING THE DROWNED RAMP DURING EARLY TO MIDDLE ORDOVICIAN IN THE YANGTZE REGION, SOUTH CHINA: IMPLICATIONS FOR THE GREAT ORDOVICIAN BIODIVERSIFICATION EVENT (GOBE)
LUAN, Xiaocong, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, No.39 East Beijing Road, Nanjing, 210008, China
 
4:20 PM
Discussion
4:30 PM
CHARACTER STATE EVOLUTION IN A NEW PHYLUM: RADIATION OF BRYOZOA DURING THE EARLY TO MIDDLE ORDOVICIAN, WITH A DAPINGIAN TO DARRIWILIAN TRANSITION
HAGEMAN, Steven J., Department of Geological and Environmental Sciences, Appalachian State University, 572 Rivers Street, Boone, NC 28608 and ERNST, Andrej, Institut für Geologie, Universität Hamburg, Bundesstraße 55, Hamburg, D-20146, Germany
4:45 PM
AN INVESTIGATION OF REEF BUILDUP STAGES IN THE LATE ORDOVICIAN (KATIAN) KIMMSWICK LIMESTONE, EAST-CENTRAL MISSOURI: THE ROLE OF TAXA, BIOVOLUME AND STRATIGRAPHY
CHIARELLO, Josephine, Department of Geology, University of Cincinnati, 500 Geology Physics Building, Cininnati, OH 45221, WITTMER, Jacalyn M., Geological Sciences, SUNY-Geneseo, 1 College Circle, Geneseo, NY 14454, GUENSBURG, Thomas E., IRC, Field Museum, 1400 South Lake Shore Drive, Chicago, IL 60605, STOCK, Carl W., Department of Geological Sciences, University of Alabama, Emeritus, 31220 Florence Road, Conifer, CO 80433-7515, DARROUGH, Guy, Lost World Studios, Cadet, MO 63630 and BRETT, Carlton E., Department of Geology, University of Cincinnati, 500 Geology/Physics Building, Cincinnati, OH 45221-0013
5:00 PM
DELINEATING SPECIES OF RAFINESQUINA IN THE TYPE CINCINNATIAN (ORDOVICIAN): GEOMETRIC AND MULTIVARIATE MORPHOMETRIC APPROACHES
FORSYTHE, Ian J., Department of Geological Sciences, Ohio University, 316 Clippinger Lab, Athens, OH 45701 and STIGALL, Alycia L., Department of Geological Sciences and OHIO Center for Ecology and Evolutionary Studies, Ohio University, 316 Clippinger Laboratories, Athens, OH 45701
5:15 PM
“PHOSPHATIZATION” OF ECHINODERM OSSICLES: INSIGHTS FROM ORDOVICIAN AND MODERN ENVIRONMENTS
DATTILO, Benjamin1, MEYER, David L.2, FREEMAN, Rebecca L.3, THOMKA, James R.4, SHERAY, Samuel1 and STEBING, Joanna5, (1)Department of Biology, Purdue University Fort Wayne, 2101 E. Coliseum Blvd, Fort Wayne, IN 46805-1499, (2)Department of Geology, University of Cincinnati, Cincinnati, OH 45221, (3)Department of Earth and Environmental Sciences, University of Kentucky, Lexington, KY 40506-0053, (4)Center for Earth and Environmental Science, State University of New York at Plattsburgh, Plattsburgh, NY 12901, (5)Department of Geosciences, Indiana University Purdue University Fort Wayne, Fort Wayne, IN 46805
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