GSA Annual Meeting in Seattle, Washington, USA - 2017

Session No. 322
Wednesday, 25 October 2017: 8:00 AM-12:00 PM
Tahoma 5 (The Conference Center)

T230. Polygenetic Mélanges: A Glimpse on Tectono-Sedimentary Recycling in Convergent Margins

GSA International Interdisciplinary Interest Group; IGCP 640 program S4SLIDE (Significance of Modern and Ancient Submarine Slope Landslides); GSA Structural Geology and Tectonics Division; GSA Sedimentary Geology Division
Andrea Festa, Kei Ogata and Gian Andrea Pini, Advocates
 
8:00 AM
Introductory Remarks
8:05 AM
THE POLYGENETIC HEAVEN’S BEACH MELANGE, FRANCISCAN COMPLEX, CALIFORNIA, USA (Invited Presentation)
RAYMOND, Loren A., Coast Range Geological Mapping Institute, Santa Rosa, CA 95405; Professor Emeritus, Geology Department, Appalachian State University, Boone, NC 28608, raymondla@bellsouth.net
8:25 AM
SEDIMENTARY COMPARED TO TECTONIC SERPENTINITE MÉLANGES AND BLOCKS OF ONE TYPE OF MÉLANGE IN ANOTHER: COASTAL CALIFORNIA EXAMPLES
WAKABAYASHI, John, Department of Earth and Environmental Sciences, California State University, Fresno, CA 93740, jwakabayashi@csufresno.edu
8:40 AM
LARGE RANGE OF METAMORPHIC CONDITIONS RECORDED IN BLOCKS OF A SINGLE MéLANGE ZONE: AN EXAMPLE FROM THE FRANCISCAN COMPLEX OF CALIFORNIA
SHIELDS, Jessie E. and WAKABAYASHI, John, Department of Earth and Environmental Sciences, California State University, Fresno, CA 93740, jessieshields9@mail.fresnostate.edu
8:55 AM
STRUCTURAL FABRICS, GEOCHEMISTRY, AND GEOCHRONOLOGY OF THE REINDEER HILLS MELANGE, A SUTURE ZONE IN SOUTH-CENTRAL ALASKA
BIER, Sara E.1, FISHER, Donald M.2, FEINEMAN, Maureen2 and O'SULLIVAN, Paul B.3, (1)Geology Department, State University of New York at Potsdam, 44 Pierrepont Avenue, Potsdam, NY 13676, (2)Department of Geosciences, Pennsylvania State University, University Park, PA 16802, (3)GeoSep Services, 1521 Pine Cone Road, Moscow, ID 87872-9709, bierse@potsdam.edu
9:10 AM
BLOCK-IN-MATRIX ROCKS AT THE LEADING EDGE OF THE HUMBER ARM ALLOCHTHON, PORT AU PORT PENINSULA, NEWFOUNDLAND APPALACHIANS
LACOMBE, Ryan A., WALDRON, John W.F. and HARRIS, Nicholas B., Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G2E3, Canada, john.waldron@ualberta.ca
9:25 AM
TECTONIC FLOW MÉLANGE AND OLISTOSTROMES IN THE FRANCISCAN COMPLEX: WHICH IS MORE ABUNDANT?
CLOOS, Mark, Dept. Geological Sciences, University of Texas at Austin, Austin, TX 78712 and UKAR, Estibalitz, Bureau of Economic Geology, University of Texas at Austin, Austin, TX 78713, cloos@jsg.utexas.edu
 
9:40 AM
Discussion
 
9:55 AM
Break
10:10 AM
LIQUEFACTION-INDUCED MASS TRANSPORT DEPOSIT: STRUCTURAL CHARACTERISTICS AND THEIR SEQUENCE OF INTERMITTENT EVENTS (Invited Presentation)
YAMAMOTO, Yuzuru, Jamstec, MAT, 3183-25, Showa-machi, Kanazawa-ku, Yokohama, 236-0001, Japan, YAMADA, Yasuhiro, Research and Development Center for Ocean Drilling Science, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 3173-25 Showa-machi, Kanazawa-ku, Yokohama, 236-0001, Japan and KAWAKAMI, Shunsuke, Asahi Geo Survey Co., Ltd, Shibuya, 151-0051, Japan, yuzuru-y@jamstec.go.jp
10:30 AM
SEDIMENTARY STRATAL DISRUPTION AND LITHOLOGICAL MIXING IN POLYGENETIC MÉLANGES
OGATA, Kei, Faculty of Science, Vrije Universiteit, De Boelelaan 1085, Amsterdam, 1081 HV, Netherlands, FESTA, Andrea, Università di Torino, Dipartimento Scienze della Terra, Via Valperga Caluso 35, Torino, 10125, Italy and PINI, Gian Andrea, Dipartimento di Matematica e Geoscienze, Università degli Studi di Trieste, via Weiss 2, Trieste, 34128, Italy, k.ogata@vu.nl
10:45 AM
TECTONIC CONTROL OF MÉLANGES FORMATION OF SEDIMENTARY AND POLYGENETIC ORIGIN: EXAMPLES FROM PALEOZOIC TO MESOZOIC ACCRETIONARY COMPLEXES OF SOUTHWEST JAPAN
WAKITA, Koji, Graduate School of Science and Engineering, Yamaguchi University, Yoshida, 1677-1, Yamaguchi, 7538512, Japan, k-wakita@yamaguchi-u.ac.jp
11:00 AM
ACCRETION OF NEO-TETHYS OCEANIC SUBDUCTION IN EARLIEST CRETACEOUS ALONG THE YARLUNG ZANGBO SUTURE ZONE, SANGSANG AREA, SOUTHERN TIBET
WANG, Houqi1, DING, Lin2, KAPP, Paul3, CAI, Fulong2, CLINKSCALES, Christopher Andrew3, XU, Qiang2, YUE, Yahui2 and LI, Shun2, (1)Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; Department of Geosciences, The University of Arizona, Tucson, AZ 85721, (2)Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China, (3)Department of Geosciences, The University of Arizona, Tucson, AZ 85721, wanghq@itpcas.ac.cn
11:15 AM
MUD DIAPIRS ORIGINATED FROM MUD-RICH MASS TRANSPORT DEPOSITS: EXHUMED FIELD CASES AND MODERN ANALOGUES
PINI, Gian Andrea1, CONTI, Stefano2, FESTA, Andrea3, FONTANA, Daniela2, LUCENTE, Claudio Corrado4 and OGATA, Kei5, (1)Dipartimento di Matematica e Geoscienze, Università degli Studi di Trieste, via Weiss 2, Trieste, 34128, Italy, (2)Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Modena e Reggio Emilia, Modena, 41121, Italy, (3)Università di Torino, Dipartimento Scienze della Terra, Via Valperga Caluso 35, Torino, 10125, Italy, (4)Servizio Tecnico di Bacino Romagna, Regione Emilia-Romagna, Via Rosaspina, 7, Rimini, 47923, Italy, (5)Faculty of Science, Vrije Universiteit, De Boelelaan 1085, Amsterdam, 1081 HV, Netherlands, gpini@units.it
11:30 AM
CAN SUBDUCTION OF SEDIMENTARY MÉLANGES CONTROL THE MECHANICS OF SHALLOW MEGATHRUST?
FESTA, Andrea, Università di Torino, Dipartimento Scienze della Terra, Via Valperga Caluso 35, Torino, 10125, Italy, DILEK, Yildirim, Department of Geology & Environmental Earth Science, Miami University, Oxford, 208 Shideler Hall, 250 S Patterson Avenue, Oxford, Ohio, OH 45056, MITTEMPERGHER, Silvia, Dipartimento di Scienze Geologiche e Geotecnologie, Università di Milano-Bicocca, Milano, 20126, Italy, OGATA, Kei, Faculty of Science, Vrije Universiteit, De Boelelaan 1085, Amsterdam, 1081 HV, Netherlands, PINI, Gian Andrea, Dipartimento di Matematica e Geoscienze, Università degli Studi di Trieste, via Weiss 2, Trieste, 34128, Italy and REMITTI, Francesca, Dipartimento di Scienze Chimiche e Geologiche, University of Modena and Reggio Emilia, Modena, 41125, Italy, andrea.festa@unito.it
 
11:45 AM
Concluding Remarks
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