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GSA Annual Meeting in Seattle, Washington, USA - 2017

Session No. 213
Tuesday, 24 October 2017: 8:00 AM-12:00 PM
Tahoma 2 (The Conference Center)

T218. Understanding the Interplay of Structural, Metamorphic, and Magmatic Processes in the Evolution of Convergent Margins: Lessons from the Proterozoic to Present-Day South American Andean Margin

GSA Structural Geology and Tectonics Division; GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division; GSA International/International Interdisciplinary Interest Group
Sean R. Mulcahy, Sarah M. Roeske and William C. McClelland, Advocates
213-1
8:00 AM
CONTRASTING TECTONIC REGIMES AND BASIN EVOLUTION IN RESPONSE TO VARIABLE PLATE COUPLING ALONG THE ANDEAN MARGIN
HORTON, Brian K., Department of Geological Sciences and Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, TX 78712, horton@jsg.utexas.edu
213-2
8:15 AM
BUILDING AN ANDES PLATE TECTONIC RECONSTRUCTION BACK TO THE LATE CRETACEOUS ~80MA USING UNFOLDED SLABS FROM SEISMIC TOMOGRAPHY: IMPLICATIONS FOR FLAT SLAB TECTONICS
CHEN, Yi-Wei, WU, Jonny and SUPPE, John, Department of Earth and Atmospheric Sciences, University of Houston, 3507 Cullen Blvd, SR1 #312, Houston, TX 77204-5007, yiweichen.tw@gmail.com
213-3
8:30 AM
FEEDBACKS BETWEEN MAGMATISM AND STRESS AND STRAIN FIELDS IN THE MALARGüE FOLD AND THRUST BELT, SOUTHERN CENTRAL ANDES (34º-36ºS)
MESCUA, José F.1, GIAMBIAGI, Laura2, SRUOGA, Patricia3, WINOCUR, Diego4, BARRIONUEVO, Matías2, TAPIA, Felipe5, ALVAREZ, Pamela6, SPAGNOTTO, Silvana Liz7, FARIAS, Marcelo8, STAHLSCHMIDT, Erico9 and BENITEZ, Anahí5, (1)Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales, CCT Mendoza, CONICET, Av. Ruiz Leal s/n, Parque General San Martín, Mendoza, 5500, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre Jorge Contreras 1300, Parque General San Martín, Mendoza, M5502JMA, Argentina, (2)Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales, CCT Mendoza, CONICET, Av. Ruiz Leal s/n, Parque General San Martín, Mendoza, 5500, Argentina, (3)CONICET - SEGEMAR, Buenos Aires, B1650 WAB, Argentina, (4)Instituto de Estudios Andinos Don Pablo Groeber (IDEAN) UBA-CONICET, Universidad de Buenos Aires, Buenos Aires, C1428EGA, Argentina, (5)Instituto de Estudios Andinos Don Pablo Groeber (IDEAN), UBA-CONICET, Universidad de Buenos Aires, Buenos Aires, C1428EGA, Argentina, (6)TEHEMA, Pirque, 9480000, Chile, (7)CONICET - Universidad Nacional de San Luis, San Luis, 5701, Argentina, (8)Departamento de Geología, Universidad de Chile, Santiago, 13518, Chile, (9)El Trebol S.A., Mendoza, 5500, Argentina, jmescua@mendoza-conicet.gob.ar
213-4
8:50 AM
MULTIPHASE PRE-ANDEAN DEFORMATION GUIDES CENOZOIC MOUNTAIN BUILDING IN THE CENTRAL ANDES, SOUTHERN PERU
PEREZ, Nicholas, Texas A&M University, Department of Geology and Geophysics, TAMU 3115, College Station, TX 77843, ndperez@tamu.edu
213-5
9:10 AM
FOLD ANALYSIS OF THE CENTRAL PERUVIAN SEGMENT OF THE ANDEAN OROGENY REVEALS STRAIN ACCUMULATION PATTERNS DURING REPEATED PARALLEL CONTRACTIONAL EVENTS
WISE, James, MMG Ltd., 13766 W. Amherst Way, Lakewood, CO 80228, jim.wise@mmg.com
213-6
9:25 AM
CRUSTAL SHORTENING INDUCED FILTER PRESSING AND RHYOLITE MELT EXTRACTION IN A SHALLOW PLUTONIC COMPLEX, SOUTHERN ANDES
GARIBALDI, Nicolas, Geoscience, University of Wisconsin-Madison, 1215 W, Madison, WI 53706, SCHAEN, Allen, Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53706, TIKOFF, Basil, Department of Geoscience, University of Wisconsin-Madison, 1215 W Dayton St, Madison, WI 53706 and SINGER, Bradley S., Department of Geoscience, University of Wisconsin, 1215 W. Dayton St., Madison, WI 53706, garibaldi@wisc.edu
213-7
9:40 AM
DETRITAL ZIRCON U-PB GEOCHRONOLOGY OF MODERN RIVER SANDS IN THE ECUADORIAN ANDES: IMPLICATIONS FOR TECTONIC HISTORY AND SEDIMENT RECYCLING
JACKSON, Lily J.1, HORTON, Brian K.1 and VALLEJO, Cristian2, (1)Department of Geological Sciences, University of Texas at Austin, 2275 Speedway Stop C9000, Austin, TX 78712 – 1722, (2)Departamento de Geología, Escuela Politécnica Nacional, Ladrón de Guevara E11-253, Quito, 170605, Ecuador, lilyjackson@utexas.edu
 
9:55 AM
Lightning Talks
 
10:10 AM
Break
 
10:25 AM
Lightning Talks
213-8
10:40 AM
DISPLACED CAMBRIAN BASINS AND CAMBRIAN STRIKE-SLIP EMPLACEMENT OF THE AREQUIPA TERRANE IN SOUTHERN PERU
HODGIN, Eben Blake1, CROWLEY, James L.2, CARLOTTO, Victor3 and MACDONALD, Francis A.1, (1)Department of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138, (2)Department of Geosciences, Boise State University, Boise, ID 83725, (3)Universidad Nacional de San Antonio Abad del Cusco, Avenida de la Cultura, 733, Cusco, 921, Peru, hodgin@fas.harvard.edu
213-9
10:55 AM
DEPTH-DEPENDENT CHANGES IN DEFORMATION AND MAGMATISM IN THE FAMATINIAN ARC, ARGENTINA: IMPLICATIONS FOR ISOSTATIC RESPONSE AND MOUNTAIN BUILDING
RATSCHBACHER, Barbara1, PATERSON, Scott R.1, ALASINO, Pablo2, LARROVERE, Mariano A.2, CAO, Wenrong3 and OKAYA, David1, (1)Department of Earth Sciences, University of Southern California, 3651 Trousdale Pkwy, Los Angeles, CA 90089, (2)CRILAR-CONICET/INGeReN-UNLaR, Entre Ríos y Mendoza s/n, Anillaco, La Rioja, 5301, Argentina, (3)Department of Geological Sciences and Engineering, University of Nevada, Reno, Reno, NV 89557, barbara.ratschbacher@gmail.com
213-10
11:15 AM
ARCHITECTURE OF CRUSTAL-SCALE DUCTILE SHEAR ZONE SYSTEMS IN A HOT OROGEN: THE ORDOVICIAN FAMATINIAN OROGEN, NW ARGENTINA
LARROVERE, Mariano A.1, PATERSON, Scott R.2, ALASINO, Pablo H.1, RATSCHBACHER, Barbara C.2, LUSK, Alexander Dmitri Johnston2 and CAWOOD, Tarryn Kim2, (1)CRILAR-CONICET/INGeReN-UNLaR, Entre Ríos y Mendoza s/n, Anillaco, La Rioja, 5301, (2)Department of Earth Sciences, University of Southern California, 3651 Trousdale Parkway, Los Angeles, CA 90089-0740, paterson@usc.edu
213-11
11:30 AM
U/PB CHARACTERIZATION OF SIERRA DE MAZ: IMPLICATIONS FOR THE TIMING OF TERRANE ACCRETION AND TRANSLATION ON THE WESTERN MARGIN OF GONDWANA
WEBBER, Patricia1, HOULIHAN, Emily2, THOLT, Andrew3, MCCLELLAND, William C.1, ROESKE, Sarah M.2 and MULCAHY, Sean R.3, (1)Department of Earth and Environmental Sciences, University of Iowa, 115 Trowbridge Hall, Iowa City, IA 52242, (2)Department of Earth and Planetary Sciences, University of California, Davis, Davis, CA 95616, (3)Geology Department, Western Washington University, Bellingham, WA 98225, patricia-webber@uiowa.edu
213-12
11:45 AM
THE LINK BETWEEN ORDOVICIAN – EARLY DEVONIAN TERRANE COLLISION AND TRANSLATION AND THE FLARE-UP AND SUDDEN CESSATION OF THE FAMATINA ARC
ROESKE, Sarah M., Department of Earth and Planetary Sciences, University of California, Davis, Davis, CA 95616, MULCAHY, Sean R., Geology Department, Western Washington University, Bellingham, WA 98225 and MCCLELLAND, William C., Department of Earth and Environmental Sciences, University of Iowa, 115 Trowbridge Hall, Iowa City, IA 52242, smroeske@ucdavis.edu
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