Start |Author Index | View Uploaded Presentations | Meeting Information

Rocky Mountain Section - 64th Annual Meeting (9–11 May 2012)

Session No. 6
Wednesday, 9 May 2012: 8:30 AM-12:00 PM
Alvarado A&B (Hotel Albuquerque)

T16. Paleoproterozoic Orogeny and Mesoproterozoic Enigmas: Constraints on the Formation, Assembly, and Evolution of the Precambrian Rocks in the Rockies I

GSA Geoinformatics Division; GSA Structural Geology & Tectonics Division

 

Christopher Andronicos and Christopher G. Daniel, Advocates
Paper #
Start Time
1
8:30 AM
INVITED SPEAKER: RIFTING VS. ARC ACCRETION AS MECHANISMS FOR PALEOPROTEROZOIC CRUSTAL GROWTH IN SOUTHWESTERN LAURENTIA: POSSIBLE RESOLUTION FROM THE MOJAVE-YAVAPAI BOUNDARY ZONE, NW ARIZONA
DUEBENDORFER, Ernest, School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Geology - 4099, Building 12, Knoles Drive, Flagstaff, AZ 86011, PORTIS, Douglas, Pioneer Natural Resources, Irving, TX 75039, PRANTE, Mitchell, Department of Geology, Utah State University, Logan, UT 84322 and BONAMICI, Chloe E., Nuclear and Radiochemistry, Los Alamos National Laboratory, PO Box 1663, Los Alamos, NM 87545, ernie.d@nau.edu, ernie.d@nau.edu
2
8:45 AM
PROTEROZOIC ORTHOGNEISSIC XENOLITHS WITHIN THE TERTIARY BASASEACHIC IGNIMBRITE IN WESTERN CHIHUAHUA, MEXICO: NEW EVIDENCE FOR THE DISTRIBUTION OF PALEOPROTEROZOIC BASEMENT PROVINCES IN SOUTHWESTERN LAURENTIA
IRIONDO, Alexander, Centro de Geociencias, Universidad Nacional Autonoma de Mexico, Boulevard Juriquilla 3001, Juriquilla, 76230, Mexico and MCDOWELL, Fred W., Geological Sciences, Jackson School of Geosciences, The Univ of Texas at Austin, Austin, TX 78712, iriondo@geociencias.unam.mx, iriondo@geociencias.unam.mx
3
9:00 AM
PINAL SCHIST OF SOUTHERN ARIZONA: EVIDENCE FOR SPREADING RIDGE-TRENCH INTERACTIONS IN THE PALEOPROTEROZOIC?
MEIJER, Arend, 1389 E. Stoney Canyon Circle, Tucson, AZ 85737, ameijer2@aol.com, ameijer2@aol.com
4
9:15 AM
U-PB GEOCHRONOLOGY AND ISOTOPE GEOCHEMISTRY OF ~1.1 GA DIABASE DIKES AND SILLS IN THE SOUTHWEST U.S.: IMPLICATIONS FOR RODINIA RECONSTRUCTIONS
BRIGHT, Ryan M.1, AMATO, Jeffrey M.1, DENYSZYN, Steven W.2 and ERNST, Richard E.3, (1)Geological Sciences, New Mexico State University, P.O. Box 30001/MSC 3AB, Las Cruces, NM 88003, (2)School of Earth and Environment, University of Western Australia, 35 Stirling Highway M004, Perth, 6009, Australia, (3)Dept. of Geology, Carleton University and Ernst Geosciences, 43 Margrave Avenue, Ottawa, ON K1T 3Y2, Canada, lithological@gmail.com, lithological@gmail.com
5
9:30 AM
1100 MA RAPAKIVI GRANITES, LITTLE HATCHET MOUNTAINS, SOUTHWESTERN NEW MEXICO
MCLEMORE, Virginia T.1, HEINONEN, Aku2, RÄMÖ, O. Tapani2, ANDERSEN, Tom3 and MÄNTTÄRI, Irmeli4, (1)New Mexico Bureau of Geology and Mineral Resources, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM 87801, (2)Department of Geosciences and Geography, University of Helsinki, P.O. Box 64, Helsinki, FIN-00014, Finland, (3)Department of Geosciences, University of Oslo, P.O. Box 1047, Oslo, N-0316, Norway, (4)Research Laboratory, Geological Survey of Finland, P.O. Box 96, Betonimiehenkuja 4, Espoo, FIN-02151, Finland, ginger@gis.nmt.edu, ginger@gis.nmt.edu
6
9:45 AM
PRECISE DATING OF THE BURRO MOUNTAIN GRANITE AND ASSOCIATED METAMORPHISM, SOUTHERN NEW MEXICO; SYN-DEFORMATIONAL MAGMATISM AND RAPID COOLING OF A GNEISS DOME
AMATO, Jeffrey M.1, GAYNOR, Sean1, RIOUX, Matthew2 and BOWRING, Samuel2, (1)Geological Sciences, New Mexico State University, P.O. Box 30001/MSC 3AB, Las Cruces, NM 88003, (2)Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, amato@nmsu.edu, amato@nmsu.edu
 
10:00 AM
Break
7
10:30 AM
U-PB GEOCHRONOLOGY OF PRE-BELT SUPERGROUP ROCKS IN THE CLEARWATER COMPLEX, IDAHO: IMPLICATIONS FOR PRECAMBRIAN BASEMENT PROVINCES AND STRATIGRAPHY OF THE NORTHERN ROCKIES
GUEVARA, Victor E., Department of Geosciences, Virginia Tech, 4044 Derring Hall, Blacksburg, VA 24061, BALDWIN, Julia, Dept. of Geosciences, University of Montana, 32 Campus Dr #1296, Missoula, MT 59812-1296, CROWLEY, James L., Department of Geosciences, Boise State University, Boise, ID 83725, LEWIS, Reed S., Idaho Geological Survey, University of Idaho, 875 Perimeter Drive MS3014, Moscow, ID 83844-3014 and FOSTER, David A., Department of Geological Sciences, University of Florida, Gainesville, FL 32611, vguevara@vt.edu, vguevara@vt.edu
8
10:45 AM
UNRAVELING THE COMPLEX MESOPROTEROZOIC METAMORPHIC HISTORY OF NORTHWEST LAURENTIA WITH LU-HF GARNET GEOCHRONOLOGY
VERVOORT, Jeff1, NESHEIM, Timothy O.2, MCCLELLAND, William C.3, LANG, Helen M.4 and GILOTTI, Jane A.3, (1)School of the Environment, Washington State University, Pullman, WA 99164, (2)North Dakota Geological Survey, Bismarck, ND 58501, (3)Department of Earth and Environmental Sciences, University of Iowa, Iowa City, IA 52242, (4)Dept. Geology & Geography, West Virginia Univ, P.O. Box 6300, Morgantown, WV 26506-6300, vervoort@wsu.edu, vervoort@wsu.edu
9
11:00 AM
EVIDENCE FOR A CIRCA 1.4 GA METAMORPHIC EVENT FROM LU-HF GARNET GEOCHRONOLOGY IN THE TUSAS AND PICURIS MOUNTAINS, NORTHERN NEW MEXICO, USA
ARONOFF, Ruth F., Earth, Atmospheric, and Planetary Sciences Dept, Purdue University, West Lafayette, IN 47907, VERVOORT, Jeffery D., School of the Environment, Washington State University, Pullman, WA 99164, ANDRONICOS, Christopher L., Earth and Atmospheric Sciences, Purdue University, West Lafayette, IN 47907 and HUNTER, Robert A., Earth and Atmospheric Sciences, Cornell University, 4154 Snee Hall, Ithaca, NY 14853, raronoff@purdue.edu, raronoff@purdue.edu
10
11:15 AM
A REVISED VIEW OF PROTEROZOIC REGIONAL METAMORPHISM IN NORTHERN NEW MEXICO AS CONSTRAINED BY THE PETROLOGIC AND GEOCHRONOLOGIC INTERROGATION OF GARNET GROWTH
HUNTER, Robert A., Earth and Atmospheric Sciences, Cornell University, 4154 Snee Hall, Ithaca, NY 14853, ARONOFF, Ruth F., Earth, Atmospheric, and Planetary Sciences Dept, Purdue University, West Lafayette, IN 47907, ANDRONICOS, Christopher L., Earth and Atmospheric Sciences, Purdue University, West Lafayette, IN 47907 and VERVOORT, Jeffery D., School of the Environment, Washington State University, Pullman, WA 99164, rah295@cornell.edu, rah295@cornell.edu
11
11:30 AM
INVITED SPEAKER: PROTEROZOIC METAMORPHISM IN SOUTHWESTERN NORTH AMERICA: NEW CONSTRAINTS AND ON-GOING CHALLENGES
WILLIAMS, M.L., Department of Geosciences, University of Massachusetts, Amherst, 611 N Pleasant ST, Amherst, MA 01003 and KARLSTROM, Karl E., Department of Earth and Planetary Science, Univ of New Mexico, Northrop Hall, Albuquerque, NM 87131, mlw@geo.umass.edu, mlw@geo.umass.edu
 
11:45 AM
Discussion
See more of: Technical Sessions
<< Previous Session | Next Session >>