GSA 2020 Connects Online

Session No. 28
Monday, 26 October 2020: 5:30 PM-8:00 PM

D18. Petrology, Igneous/Metamorphic

 

Tim P. Flood and Ryan Currier, Chairs
Paper #
Start Time
5:30 PM
RAPAKIVI TEXTURE FORMATION VIA PLAGIOCLASE MUSH ARMORING: EVIDENCE FROM THE ORESTES MELT ZONE, ANTARCTICA
CURRIER, Ryan, University of West Georgia, 1601 Maple St., Carrollton, GA 30118, FLOOD, Tim P., Department of Geology, Saint Norbert College, 100 Grant St, De Pere, WI 54115 and LYDIC, Todd, Mass Spectrometry Core, Michigan State University, 220 Trowbridge Rd, East Lansing, MI 48824
5:45 PM
IRON ISOTOPE SYSTEMATICS OF THE SKAERGAARD LAYERED MAFIC INTRUSION, GREENLAND: MINERALOGIC CONSTRAINTS ON BULK-ROCK FE ISOTOPE COMPOSITIONS
HAMMERSTROM, Alexander J.1, HEIMANN, Adriana2, CUMMINGS, Tiffany L.2, MURRIE, Allison3, PERTUNEN, Brett2 and BEARD, Brian L.4, (1)Department of Geosciences, University of Massachusetts, Amherst, 627 North Pleasant Street, 233 Morrill Science Center, Amherst, MA 01060, (2)Department of Geological Sciences, East Carolina University, 101 Graham Building, Greenville, NC 27858, (3)Geological Sciences, University of North Carolina, Chapel Hill, 104 South Road, Campus Box #3315, Chapel Hill, NC 27599, (4)Department of Geoscience, University of Wisconsin-Madison; NASA Astrobiology Institute, 1215 W. Dayton St, Madison, WI 53706
6:00 PM
CONTROLS ON IRON ISOTOPE VARIATIONS OF COMPLEX FE-TI OXIDES AT HIGH-TEMPERATURE: EFFECT OF FE3+/FE2+ RATIOS AT THE SKAERGAARD LAYERED-MAFIC INTRUSION, GREENLAND
HEIMANN, Adriana1, HAMMERSTROM, Alexander2, CUMMINGS, Tiffany1, MURRIE, Allison3 and PERTUNEN, Brett1, (1)East Carolina University, Geological Sciences, 101 Graham Building, Greenville, NC 27858, (2)Geosciences, University of Massachusetts, Amherst, 627 North Pleasant Street, 233 Morrill Science Center, Amhers, MA 01060, (3)Geological Sciences, University of North Carolina, Chapel Hill, 104 South Road, Campus Box #3315, Chapel Hill, NC 27599
6:15 PM
LATE MIOCENE XENOCRYST-BEARING LAVAS ON GREEN RIDGE, CENTRAL OREGON CASCADE RANGE: IMPLICATIONS FOR THE FORMATION OF PROTEROZOIC MASSIF ANORTHOSITE
CONREY, Richard M.1, BAILEY, David G.1, CASTRONOVO, Drew1, STRECK, Martin J.2 and SINGER, Jared W.3, (1)Geosciences Dept., Hamilton College, 198 College Hill Rd, Clinton, NY 13323, (2)Department of Geology, Portland State University, 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97207-0751, (3)Department of Earth and Environmental Sciences, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180
6:30 PM
REDOX CONTROLS ON CU-PGE-AU MINERALIZATION IN THE POLARIS ALASKAN-TYPE INTRUSION, NORTH-CENTRAL BRITISH COLUMBIA
MILIDRAGOVIC, Dejan1, NIXON, Graham T.2, SCOATES, James S.3, NOTT, James3 and SPENCE, Dylan W.3, (1)Geological Survey of Canada, 1500 - 605 Robson Street, Vancouver, BC V6B 5J3, Canada; British Columbia Geological Survey, PO Box 9333 Stn Prov Govt, Victoria, BC V8W9N3, Canada, (2)BC Geological Survey, Ministry of Energy and Mines, P.O. Box 9320, Stn Prov Govt, Victoria, BC V8W9N3, Canada, (3)PCIGR, Dept. of Earth, Ocean and Atmospheric Sciences, University of British Columbia, 2020-2207 Main Mall, Vancouver, BC V6T-1Z4, Canada
6:40 PM
PRE-ERUPTIVE PROCESSES AND MAGMA STORAGE CONDITIONS AT MOMOTOMBO VOLCANO, NICARAGUA
MING, Cissy L., Department of Geosciences, Penn State University, University Park, PA 16802, FEINEMAN, Maureen, Department of Geosciences, Pennsylvania State University, State College, PA 16801 and LAFEMINA, Peter, Department of Geosciences, 406 Deike Bldg, The Pennsylvania State University, University Park, PA 16802
6:50 PM
MAGMA MINGLING IN THE SOUTHERN OKLAHOMA AULACOGEN: A STUDY OF THE COLD SPRINGS BRECCIA
NEWMAN, Jordan, Department of Geosciences, University of Texas at Dallas, 800 W Campbell RD, ROC 21, Richardson, TX 75080, STERN, Robert J., Department of Geosciences, University of Texas at Dallas, 17217 Waterview Pkwy #1.201, Dallas, TX 75080 and LEYBOURNE, Matthew I., Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, ON K7L 3N6, Canada
7:00 PM
IDENTIFYING PARAMETERS INFLUENCING TEXTURE AND GROWTH KINEMATICS OF SYN-TECTONIC PHASES: A STUDY ON METAPELITES OF NEEM KA THANA, RAJASTHAN, INDIA
ROY, Supratik, Department of Applied Geology, Indian Institute of Technology (Indian School of Mines), Dhanbad, Police Line Road, Main Campus IIT (ISM), Hirapur, Sardar Patel Nagar, Dhanbad, 826004, India, DUTTA, Upama, APPLIED GEOLOGY, Indian Institute of Technology (Indian School of Mines), DHANBAD, 826004, India and CHATTERJEE, Sadhana M., Department of Geological Sciences, Jadavpur University, 188, Raja S. C. Mallick Road, Jadavpur, Kolkata, 700032, India
7:10 PM
MULTI-STAGE METASOMATISM OF MANTLE WEDGE PERIDOTITE: EXAMPLE FROM THE ALAG KHADNY ACCRETIONARY WEDGE, WESTERN MONGOLIA
DANDAR, Otgonbayar, OKAMOTO, Atsushi, UNO, Masaoki and TSUCHIYA, Noriyoshi, Graduate School of Environmental Studies, Tohoku University, Aramaki-Aza-Aoba 6-6-20, Sendai, 980-0845, Japan
7:20 PM
HIGH-PRESSURE AND ULTRA-HIGH-PRESSURE FEATURES OF BOROSILICATES
ERTL, Andreas, Institut für Mineralogie und Kristallographie, Universität Wien, Althanstrasse 14, Vienna, 1090, Austria
7:30 PM
METAMORPHIC EVOLUTION OF THE ECLOGITE FROM THE KHUNGUI ZONE, ZAVKHAN TERRANE, WESTERN MONGOLIA
BAYARBOLD, Manzshir1, OKAMOTO, Atsushi2, DANDAR, Otgonbayar2, UNO, Masaoki2 and TSUCHIYA, Noriyoshi3, (1)Sendai, 981 000, Japan, (2)Graduate School of Environmental Studies, Tohoku University, Aramaki-Aza-Aoba 6-6-20, Sendai, 980-0845, Japan, (3)Graduate School of Environmental Studies, Tohoku University, Aramaki-Aza-Aoba 6-6-20, Sendai, 980-8579, Japan
7:40 PM
U-PB LASER ABLATION MC-ICP-MS ANALYSES OF APATITE AND ZIRCON FROM LEUCOGRANITES: CHALLENGES AND APPROACHES
MULROONEY, Laura C., ORTIZ-GUERRERO, Carolina, FOSTER, David A., VOGL, James J. and KAMENOV, George D., Department of Geological Sciences, University of Florida, 241 Williamson Hall, Gainesville, FL 32611
7:50 PM
ZIRCON PETROCHRONOLOGY OF FERROAN METAPLUTONIC ROCKS ASSOCIATED WITH THE LAC-SAINT-JEAN ANORTHOSITIC SUITE (CENTRAL GRENVILLE PROVINCE, QC, CA): TECTONIC AND PETROGENETIC IMPLICATIONS
PAPAPAVLOU, Konstantinos, GEOTOP, Université du Québec à Montréal, 201 Avenue du president Kennedy, Montreal, QC H2X 3Y7, Canada, MOUKHSIL, Abdelali, Ministère de l'Énergie et des Ressources naturelles, Quebec, QC G1H 6R1 and POIRIER, André, GEOTOP, Université du Québec à Montréal, 201 Avenue du Président-Kennedy, Montréal, QC H2X 3Y7, Canada
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