GSA 2020 Connects Online

Session No. 239
Friday, 30 October 2020: 10:00 AM-2:00 PM

T16. Assembling Laurentia: Growth of the Western Continental Margin by Subduction, with or without Terrane Accretion, 190-70 Ma II

Mineralogical Society of America; GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division; GSA Structural Geology and Tectonics Division; GSA Sedimentary Geology Division

 

Cathy J. Busby, Raphael Gottardi and Elisa Fitz-Diaz, Advocates
Paper #
Start Time
 
10:00 AM
Introductory remarks
10:15 AM
MESOZOIC EVOLUTION OF THE NORTHERN CORDILLERAN MARGIN OF LAURENTIA: WHAT WE KNOW, WHAT WE DON’T KNOW, AND IMPLICATIONS FOR LITHOSPHERE DEVELOPMENT (Invited Presentation)
ROESKE, Sarah M., Earth and Planetary Sciences, University California- Davis, One Shields Avenue, Davis, CA 95616, PAVLIS, Terry L., Geological Sciences, University of Texas at El Paso, 500 W. University Ave, El Paso, TX 79968, AMATO, Jeffrey, Geological Sciences, New Mexico State University, P.O. Box 30001/MSC 3AB, Las Cruces, NM 88003 and TROP, Jeffrey, Dept. of Geology, Bucknell University, Lewisburg, PA 17837
10:30 AM
EVOLUTION OF THE NORTHERN US CORDILLERA: RESULTS FROM THE IDOR EARTHSCOPE PROJECT (Invited Presentation)
HOLE, John A.1, GASCHNIG, Richard M.2, DAVENPORT, Kathy K.3, STANCIU, A. Christian4, BYERLY, Ad5, BREMNER, Paul6, TIKOFF, Basil5, VERVOORT, Jeffrey D.7, RUSSO, Raymond M.6 and FAYON, Annia K.8, (1)Department of Geosciences, Virginia Tech, Blacksburg, VA 24061, (2)Department of Environmental, Earth and Atmospheric Sciences, University of Massachusetts Lowell, Lowell, MA 01852, (3)College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, (4)Department of Earth Sciences, University of Oregon, Eugene, OR 97403, (5)Department of Geoscience, University of Wisconsin-Madison, Madison, WI 53706, (6)Department of Geological Sciences, University of Florida, Gainesville, FL 32611, (7)School of the Environment, Washington State University, Pullman, WA 99164, (8)Department of Earth Sciences, University of Minnesota, Minneapolis, MN 55455
10:45 AM
TECTONIC EVOLUTION AND CRUSTAL GROWTH OF THE WESTERN MARGIN OF MEXICO DURING THE MESOZOIC (Invited Presentation)
CENTENO-GARCÍA, Elena, Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico, DF 04510, Mexico
11:00 AM
THE DYNAMIC HISTORY OF 220 MILLION YEARS OF SUBDUCTION BELOW MEXICO: A CORRELATION BETWEEN SLAB GEOMETRY AND OVERRIDING PLATE DEFORMATION BASED ON GEOLOGY, PALEOMAGNETISM, AND SEISMIC TOMOGRAPHY
BOSCHMAN, Lydian1, VAN HINSBERGEN, Douwe J.J.2, LANGEREIS, Cor G.2, KIMBROUGH, David L.3, MOLINA GARZA, Roberto S.4 and SPAKMAN, Wim2, (1)Environmental Systems Science, ETH Zürich, Universitätstrasse 16, Zürich, 8092, Switzerland; Earth Sciences, Utrecht University, Princetonlaan 8a, Utrecht, 3584 CB, Netherlands, (2)Earth Sciences, Utrecht University, Princetonlaan 8a, Utrecht, 3584 CB, Netherlands, (3)Geological Sciences, San Diego State University, 5500 Campanile Dr, San Diego, CA 92182, (4)Unidad de Investigación de Ciencias de la Tierra, Campus Juriquilla, UNAM, Km 15 Carretera San Luis Potosí, Querétaro, 76230, Mexico
 
11:15 AM
Discussion
11:30 AM
DEFORMATION HISTORY OF MANTLE XENOLITHS OF THE CANADIAN CORDILLERA
GONZALEZ, Arvid1, KIRKPATRICK, James2, SEYLER, Caroline2 and MINARIK, William G.3, (1)Earth and Planetary Sciences Department, McGill University, 3450 University Street Montreal, Montreal, QC H3A 0E8, Canada, (2)Department of Earth and Planetary Sciences, McGill University, 3450 University St, Montreal, QC H3A 0E8, Canada, (3)Department of Earth and Planetary Sciences, McGill Univ, 3450 University Street, Montreal, QC H3A2A7, Canada
11:45 AM
GEOCHEMICAL AND STRATIGRAPHIC ANALYSIS OF THE CHISANA FORMATION, INSULAR TERRANES, EASTERN ALASKA: EARLY CRETACEOUS MAGMATISM AND TECTONICS ALONG THE NORTHERN CORDILLERAN MARGIN
BRUESEKE, Matthew E.1, MANSELLE, Patrick1, TROP, Jeffrey M.2, BENOWITZ, Jeffrey A.3, SNYDER, Darin C.4 and HART, William K.5, (1)Department of Geology, Kansas State University, 108 Thompson Hall, Manhattan, KS 66506, (2)Department of Geology and Environmental Geosciences, Bucknell University, 1 Dent Drive, Lewisburg, PA 17837, (3)Fairbanks, AK 99775, (4)Idaho National Laboratory, Idaho Falls, ID 83415, (5)Department of Geology and Environmental Earth Science, Miami University, Oxford, OH 45056
12:00 PM
EVIDENCE FOR SUBDUCTION ALONG THE LEECH RIVER FAULT AND IMPLICATIONS FOR CORDILLERAN TECTONICS
SEYLER, Caroline1, KIRKPATRICK, James1, LICHT, Alexis2, ŠILEROVÁ, Dana1 and REGALLA, Christine3, (1)Department of Earth and Planetary Sciences, McGill University, 3450 University St, Montreal, QC H3A 0E8, Canada, (2)Earth and Space Sciences, University of Washington, Seattle, WA 98195, (3)School of Earth and Sustainability, Northern Arizona University, 625 S. Knoles, Flagstaff, AZ 86011
12:15 PM
LARGE MID-CRETACEOUS SINISTRAL SHEAR ZONES LOCALIZED IN THE COAST MOUNTAINS BATHOLITH, BC
WANG, Jordan W., GEHRELS, George E. and KAPP, Paul A., Geosciences, University of Arizona, 1040 E. 4th Street, Tucson, AZ 85721
 
12:30 PM
Discussion
12:45 PM
SPACE/TIME EVOLUTION OF MAGMATISM IN THE KLAMATH MOUNTAINS PROVINCE (KMP), CA/OR: IMPLICATIONS FOR CORDILLERAN ARC MAGMA PERIODICITY
RICHARDSON, Andrea E., YOSHINOBU, Aaron S. and BARNES, Calvin G., Department of Geosciences, Texas Tech University, Lubbock, TX 79409-1053
1:00 PM
REMNANTS OF THE CONTINENTAL SLOPE ALONG THE WESTERN EDGE OF PANGEA IN NORTH-CENTRAL MEXICO
BARBOZA-GUDIÑO, José Rafael, Instituto de Geologia, Universidad Autónoma de San Luis Potosí, Manuel Nava 5, zona universitaria, San Luis Potosí, Juarez 20, Villa Hidalgo S.L.P, San Luis Potosí, 78240, Mexico, JAIME RODRÍGUEZ, Diego, Instituto de Geología, Universidad Autónoma de San Luis Potosí, Manuel Nava 5, zona universitaria, San Luis Potosi, SL 78240, Mexico and OCAMPO DIAZ, Yam Zul E., Área de Ciencias de la Tierra, Facultad de Ingeniería, Universidad Autónoma de San Luís de Potosí, Av. Dr. Manuel Nava No. 8, Zona Universitaria, San Luis Potosí, 78290, Mexico
1:15 PM
THE RECYCLING OF CHROMITITES IN THE PUERTO NUEVO OPHIOLITE (BAJA CALIFORNIA SUR, MEXICO)
COLAS, Vanessa1, GONZÁLEZ-JIMÉNEZ, José María2, CAMPRUBÍ, Antoni1, GRIFFIN, William L.3, PROENZA, Joaquín A.4, CENTENO-GARCÍA, Elena1, O'REILLY, Suzanne Y.3, GARCIA-CASCO, Antonio5, BELOUSOVA, Elena A.3, TALAVERA, Cristina6, FARRÉ-DE-PABLO, Julia4 and SATSUKAWA, Takako7, (1)Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico, DF 04510, Mexico, (2)Departamento de Mineralogía y Petrología, Universidad de Granada, Granada, 18001, Spain, (3)Macquarie University, ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) and GEMOC National Key Centre, Sydney, NSW 2109, Australia, (4)Universitat de Barcelona, Departament de Mineralogia, Petrologia i Geologia Aplicada, Barcelona, 08007, Spain, (5)Instituto Andaluz de Ciencia de la Tierra (IACT), Universidad de Granada-CSIC, Armilla (Granada), 18100, Spain; Departamento de Mineralogía y Petrología, Universidad de Granada, Granada, 18071, Spain, (6)John de Laeter Centre, Curtin University, Perth, WA WA 6102, Australia; School of Geosciences, University of Edinburgh, The King’s Building, James Hutton Road, EH93FE, Edinburgh, EH93FE, United Kingdom, (7)Department of Geophysics, Kyoto University, Kyoto, 606-8502, Japan
1:30 PM
MIDDLE JURASSIC-EARLY CRETACEOUS (166-140 MA) ISLAND ARC MAGMATISM OF NW MEXICO: EVIDENCE FROM THE META-IGNEOUS ROCKS OF THE SIERRA EL ARCO AND COEVAL MAGMATIC ROCKS IN BAJA CALIFORNIA
CONTRERAS-LÓPEZ, Manuel1, DELGADO-ARGOTE, Luis Alberto1, WEBER, Bodo1, TORRES-CARRILLO, Xochitl G.2, FREI, Dirk3 and GÓMEZ-ALVAREZ, Doris K.1, (1)Geology Department, Center for Scientific Research and Higher Education of Ensenada, Carretera Ensenada-Tijuana 3918, Ensenada, BJ 22860, Mexico, (2)Faculty of Earth and Space Sciences, Autonomous University of Sinaloa, Avenida Universitarios, Ciudad Universitaria, Culiacán Rosales, SI 80013, Mexico, (3)Department of Earth Science, University of Western Cape, Belville, South Africa
 
1:45 PM
Discussion
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