International Ocean Discovery Program Expedition 354 preliminary report; Bengal Fan; Neogene and late Paleogene record of Himalayan Orogeny and climate; a transect across the middle Bengal Fan; 30 January-31 March 2015

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doi: 10.14379/iodp.pr.354.2015
Author(s): France-Lanord, Christian; Spiess, Volkard; Schwenk, Tilmann; Klaus, Adam; Adhikari, Rishi R.; Adhikari, Swostik K.; Bahk, Jang-Jun; Baxter, Alan T.; Cruz, Jarrett W.; Das, Supriyo Kumar; Dekens, Petra; Duleba, Wania; Fox, Lyndsey R.; Galy, Albert; Galy, Valier; Ge Junyi; Gleason, James D.; Gyawali, Babu R.; Huyghe, Pascale; Jia Guodong; Lantzsch, Hendrik; Manoj, M. C.; Martin, Yasmina Martos; Meynadier, Laure; Najman, Yani M. R.; Nakajima, Arata; Ponton, Camilo; Reilly, Brendan T.; Rogers, Kimberly G.; Savian, Jairo F.; Selkin, Peter A.; Weber, Michael E.; Williams, Trevor; Yoshida, Koki
International Ocean Discovery Program, Expedition 354 Scientists, College Station, TX
Author Affiliation(s): Primary:
Centre de Recherches Pétrographiques et Géochimiques, Vandoeuvre les Nancy, France
Other:
University of Bremen, Germany
Texas A&M University, United States
Shimane University, Japan
Korea Institute of Geoscience and Mineral Resources, South Korea
University of New England, Australia
Florida State University, United States
Presidency University, India
San Francisco State University, United States
Universidade de Sao Paulo, Brazil
University of Leeds, United Kingdom
Woods Hole Oceanographic Institution, United States
Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, China
University of Michigan, United States
Tohoku University, Japan
University Joseph Fourier, France
Chinese Academy of Sciences, Guangzhou Institute of Geochemistry, China
Birbal Sahni Institute of Palaeobotany, India
Université Paris Diderot, France
Lancaster University, United Kingdom
Yamaguchi University, Japan
University of Southern California, United States
Oregon State University, United States
University of Colorado, Boulder, United States
Universidade Federal do Rio Grande do Sul, Brazil
University of Washington, United States
Universität Ko1.ln, Germany
Lamont-Doherty Earth Observatory, United States
Shinshu University, Japan
Source: Preliminary Reports (International Ocean Discovery Program), Vol.354, 46p. Publisher: International Ocean Discovery Program, College Station, TX, United States. ISSN: 2372-9562
Note: In English. 104 refs.
Summary: International Ocean Discovery Expedition 354 to 8°N in the Bay of Bengal drilled a seven site, 320 km long transect across the Bengal Fan. Three deep-penetration and an additional four shallow holes give a spatial overview of th e primarily turbiditic depositional system that comprises the Bengal deep-sea fan. Sediments originate from Himalayan rivers, documenting terrestrial changes of Himalayan erosion and weathering, and are transported through a delta and shelf canyon, supplying turbidity currents loaded with a full spectrum of grain sizes. Mostly following transport channels, sediments deposit on and between levees while depocenters laterally shift over hundreds of kilometers on millennial timescales. During Expedition 354, these deposits were documented in space and time, and the recovered sediments have Himalayan mineralogical and geochemical signatures relevant for reconstructing time series of erosion, weathering, and changes in source regions, as well as impacts on the global carbon cycle. Miocene shifts in terrestrial vegetation, sediment budget, and style of sediment transport were tracked. Expedition 354 has extended the record of early fan deposition by 10 My into the late Oligocene.
Year of Publication: 2015
Research Program: IODP Integrated Ocean Drilling Program
IODP2 International Ocean Discovery Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Bay of Bengal; Bengal Fan; Biostratigraphy; Boreholes; Cenozoic; Chemostratigraphy; Cores; Currents; Expedition 354; Himalayan Orogeny; IODP Site U1449; IODP Site U1450; IODP Site U1451; IODP Site U1452; IODP Site U1453; IODP Site U1454; IODP Site U1455; Indian Ocean; International Ocean Discovery Program; Lithostratigraphy; Magnetostratigraphy; Marine sediments; Physical properties; Plate collision; Plate tectonics; Pore water; Progradation; Quaternary; Sediment transport; Sedimentation; Sedimentation rates; Sediments; Submarine fans; Tertiary; Transport; Turbidity currents
Coordinates: N080000 N080100 E0884500 E0855100
Record ID: 2015055306
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