Integrated Ocean Drilling Program Expedition 333 preliminary report; NanTroSEIZE Stage 2; subduction inputs 2 and heat flow; 12 December 2010-10 January 2011

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doi: 10.2204/iodp.pr.333.2011
Author(s): Henry, Pierre; Kanamatsu, Toshiya; Thu, Moe Kyaw; Alves, Tiago; Bauersachs, Thorsten; Daigle, Hugh; Ekinci, Koray; Shu Gao; Garçon, Marion; Kawamura, Kiichiro; Kitamura, Yujin; Laberg, Jan Sverre; Lee, Gwangsoo; Lee, Youngmin; Lu, Yuehan; Marcaillou, Boris; Matsubayashi, Osamu; Nagahashi, Yoshitaka; Novak, Beth; Saito, Yu; Satoguchi, Yasufumi; Screaton, Elizabeth; Scudder, Rachel P.; Song, Bo Ra; Strasser, Michael; Yamaguchi, Asuka
Integrated Ocean Drilling Program, Expedition 333 Scientists, College Station, TX
Author Affiliation(s): Primary:
Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environement, France
Other:
Japan Agency for Marine-Earth Science and Technology, Japan
Cardiff University, United Kingdom
Christian Albrecht University of Kiel, Germany
Rice University, United States
University of Missouri-Columbia, United States
Nanjing University, China
Laboratoire de Géodynamique des Chaînes Alpines, France
Fukada Geological Institute, Japan
University of Tromso, Norway
Pukyong National University, South Korea
Korea Institute of Geoscience and Mineral Resources, South Korea
University of Alabama, United States
Université des Antilles et de la Guyane, France
National Institute of Advanced Industrial Science and Technology, Japan
Fukushima University, Japan
Western Washington University, United States
Doshisha University, Japan
Lake Biwa Museum, Japan
University of Florida, United States
Boston University, United States
University of Bremen, Germany
University of Tokyo, Japan
Source: Preliminary Report (Integrated Ocean Drilling Program), Vol.333, 107p. Publisher: IODP Management International, College Station, TX, United States. ISSN: 1932-9423
Note: In English. 78 refs.
Summary: The Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) program is a coordinated, multiexpedition drilling project designed to investigate fault mechanics and seismogenesis along subduction megathrusts through direct sampling, in situ measurements, and long-term monitoring in conjunction with allied laboratory and numerical modeling studies. Some of the fundamental scientific objectives of the NanTroSEIZE drilling project include characterizing the nature of fault slip and strain accumulation, fault and wall rock composition, fault architecture, and state variables throughout the active plate boundary system to a depth of 7000 m below seafloor. It is also important to show how such properties evolve from shallow, presubduction conditions in the Shikoku Basin to greater depths of the accretionary prism where fault slip is seismogenic. Within this context, the primary goals for Integrated Ocean Drilling Program (IODP) Expedition 333 were: (1) drilling and coring of previously unsampled intervals of sediment and basalt at IODP Sites C0011 and C0012 in the Shikoku Basin, together with downhole measurements of temperature, and (2) drilling and coring at a site near the updip terminus of the megasplay fault, as proposed in Ancillary Project Letter (738-APL: Nankai Trough Submarine Landslide History [NanTroSLIDE]). The most important accomplishments were (1) determination of heat flow at Sites C0011 and C0012, (2) coring through a transition in physical properties within the upper part of the Shikoku hemipelagite, (3) repeated coring and sampling of fluid above the sediment/basement interface for shore-based geochemical studies, (4) coring into the basalt to 100 m below the sediment/basalt interface, and (5) drilling and sampling a nearly complete slope basin stratigraphic succession comprising six mass transport deposits that record ∼1 m.y. submarine landsliding history near the shallow megasplay fault zone area.
Year of Publication: 2011
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Accretionary wedges; Algae; Alteration; Asia; Basalts; Biostratigraphy; Boreholes; Cenozoic; Chemostratigraphy; Chronostratigraphy; Circulation; Continental margin; Cores; Crust; Diagenesis; Drilling; Event stratigraphy; Expedition 322; Expedition 333; Far East; Fluid phase; Geophysical methods; Geophysical profiles; Geophysical surveys; Heat flow; Honshu; IODP Site C0011; IODP Site C0012; IODP Site C0018; Igneous rocks; Integrated Ocean Drilling Program; Japan; Kii Peninsula; Lithofacies; Lithostratigraphy; Magnetostratigraphy; Marine drilling; Marine sediments; Mass movements; Microfossils; NanTroSEIZE; Nankai Trough; Nannofossils; North Pacific; Northwest Pacific; Oceanic crust; Pacific Ocean; Physical properties; Plantae; Plate tectonics; Pore water; Quaternary; Sedimentary rocks; Sediments; Seismic methods; Seismic profiles; Shikoku Basin; Slumping; Subduction zones; Surveys; Tephrochronology; Tephrostratigraphy; Tertiary; Volcanic rocks; Well logs; West Pacific
Coordinates: N324944 N324944 E1365254 E1365254
N324453 N324453 E1365501 E1365501
N330925 N330925 E1364053 E1364053
Record ID: 2011048462
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