Expedition 319 summary

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doi: 10.2204/iodp.proc.319.101.2010
Author(s): Araki, Eiichiro; Byrne, Tim; McNeill, Lisa; Saffer, Demian; Eguchi, Nobuhisa; Takahashi, Kyoma; Toczko, Sean; Kido, Yukari; Thu, Moe Kyaw; Sanada, Yoshinori; Boutt, David; Buchs, David; Buret, Christophe; Conin, Marianne; Cukur, Deniz; Doan, Mai-Linh; Efimenko, Natalia; Flemings, Peter; Hayman, Nicholas; Horiguchi, Keika; Huftile, Gary; Ito, Takatoshi; Jiang, Shijun; Kameo, Koji; Kano, Yasuyuki; Kawabata, Kuniyo; Kitada, Kazuya; Kopf, Achim; Lin, Weiren; Moore, J. Casey; Schleicher, Anja; von Huene, Roland; Wiersberg, Thomas
Integrated Ocean Drilling Program, Expedition 319 Scientists, College Station, TX
Author Affiliation(s): Primary:
Japan Agency for Marine-Earth Science and Technology, Earthquake and Tsunami Research Project for Disaster Prevention, Yokosuka, Japan
Other:
University of Connecticut, United States
University of Southampton, United Kingdom
Pennsylvania State University, United States
University of Massachusetts-Amherst, United States
Australian National University, Australia
Université de Picardie Jules Verne, France
Centre de Recherche et d'Enseignement de Géosciences de l'Environnement, France
Pukyong National University, South Korea
Université Grenoble 1, France
Université de Lausanne, Switzerland
University of Texas at Austin, United States
Osaka University, Japan
Queensland University of Technology, Australia
Tohoku University, Japan
Florida State University, United States
Chiba University, Japan
Kyoto University, Japan
National Central University, Taiwan
University of Bremen, Germany
University of California at Santa Cruz, United States
University of Michigan, United States
University of California at Davis, United States
German Research Center for Geosciences, Germany
Université Grenoble-1, France
Volume Title: Proceedings of the Integrated Ocean Drilling Program; NanTroSEIZE Stage 2; NanTroSEIZE riser/riserless observatory; Expedition 319 of the riser drilling platform; Shingu, Japan, to Yokkaichi, Japan; sites C0009-C0011, 5 May-31 August 2009
Volume Author(s): Araki, Eiichiro; Byrne, Tim; McNeill, Lisa; Saffer, Demian; Eguchi, Nobuhisa; Takahashi, Kyoma; Toczko, Sean; Kido, Yukari; Thu, Moe Kyaw; Sanada, Yoshinori; Boutt, David; Buchs, David; Buret, Christophe; Conin, Marianne; Cukur, Deniz; Doan, Mai-Linh; Efimenko, Natalia; Flemings, Peter; Hayman, Nicholas; Horiguchi, Keika; Huftile, Gary; Ito, Takatoshi; Jiang, Shijun; Kameo, Koji; Kano, Yasuyuki; Kawabata, Kuniyo; Kitada, Kazuya; Kopf, Achim; Lin, Weiren; Moore, J. Casey; Schleicher, Anja; von Huene, Roland; Wiersberg, Thomas
Source: Proceedings of the Integrated Ocean Drilling Program; NanTroSEIZE Stage 2; NanTroSEIZE riser/riserless observatory; Expedition 319 of the riser drilling platform; Shingu, Japan, to Yokkaichi, Japan; sites C0009-C0011, 5 May-31 August 2009, Eiichiro Araki, Tim Byrne, Lisa McNeill, Demian Saffer, Nobuhisa Eguchi, Kyoma Takahashi, Sean Toczko, Yukari Kido, Moe Kyaw Thu, Yoshinori Sanada, David Boutt, David Buchs, Christophe Buret, Marianne Conin, Deniz Cukur, Mai-Linh Doan, Natalia Efimenko, Peter Flemings, Nicholas Hayman, Keika Horiguchi, Gary Huftile, Takatoshi Ito, Shijun Jiang, Koji Kameo, Yasuyuki Kano, Kuniyo Kawabata, Kazuya Kitada, Achim Kopf, Weiren Lin, J. Casey Moore, Anja Schleicher, Roland von Huene and Thomas Wiersberg; Integrated Ocean Drilling Program, Expedition 319 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program (Online), Vol.319, 46p. Publisher: IODP Management International, Washington, DC, United States. ISSN: 1930-1014
Note: In English. 62 refs.; illus., incl. sects., 2 tables, sketch map
Summary: The Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) 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. The fundamental scientific objectives of the NanTroSEIZE 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. As part of the NanTroSEIZE program, operations during Integrated Ocean Drilling Program (IODP) Expedition 319 included riser drilling, analyses of cuttings and core samples, downhole measurements and logging, and casing at Site C0009 in the Kumano forearc basin as well as riserless drilling, logging while drilling (LWD), casing, and observatory operations at Site C0010 across a major splay fault (termed the "megasplay") that bounds the seaward edge of the forearc basin near its updip terminus. In addition, we drilled at contingency Site C0011 to collect LWD data in advance of planned coring operations scheduled for IODP Expedition 322. Site C0009 marked the first riser drilling in IODP history. This allowed several scientific operations unprecedented in IODP, including carefully controlled measurements of in situ pore pressure, permeability and minimum principal stress magnitude, real-time mud gas analysis, and laboratory analyses of cuttings. We conducted a leak-off test at one depth interval and successfully deployed the wireline Modular Formation Dynamics Tester 12 times to directly measure in situ stress magnitude, formation pore pressure, and permeability. During all phases of riser drilling, we sampled mud gas for geochemical analyses, and cuttings samples were collected throughout the entire riser-drilled depth range. Integration of data from cuttings, wireline logging, and cores (from a limited depth interval at the base of the hole) allowed definition of a single integrated set of lithologic units and comparison with previously drilled IODP Site C0002 to constrain the history of the forearc basin. After casing the borehole, we also conducted a long-offset (up to 30 km) two-ship active seismic experiment, recording shots within the borehole to image the megasplay and décollement beneath the borehole and to evaluate seismic velocity and anisotropy of the forearc basin and accretionary prism sediments around the borehole. At riserless Site C0010, operations included drilling with LWD/measurement-while-drilling (MWD) tools across the megasplay fault to 555 mbsf, casing the borehole with screens across the fault zone, conducting an observatory dummy run to test future strainmeter and seismometer deployment procedures, and installation of a temporary pore pressure and temperature monitoring system in advance of planned future permanent observatory emplacement. The temporary observatory system (termed a "smart plug") marks the first observatory installation of the NanTroSEIZE program. LWD/MWD data at this site were used to define unit boundaries and the fault zone target interval for placement of the casing screens. Through comparison with previously drilled Site C0004 these data also provide insights into along-strike differences in the architecture of the megasplay fault and its hanging wall.
Year of Publication: 2009
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 07 Marine Geology and Oceanography; 18 Geophysics, Solid-Earth; Algae; Biostratigraphy; Boreholes; Cenozoic; Chemostratigraphy; Cores; Downhole methods; Expedition 319; Faults; Geophysical methods; Geophysical profiles; Geophysical surveys; IODP Site C0009; IODP Site C0010; IODP Site C0011; Integrated Ocean Drilling Program; Lithostratigraphy; Marine geology; Marine sediments; Microfossils; NanTroSEIZE; Nannofossils; Neogene; North Pacific; Northwest Pacific; Pacific Ocean; Permeability; Physical properties; Plantae; Pore pressure; Quaternary; Sedimentary rocks; Sediments; Seismic methods; Seismic profiles; Shikoku Basin; Stress; Subduction zones; Surveys; Tertiary; Vertical seismic profiles; Well logs; West Pacific
Coordinates: N332728 N332728 E1363209 E1363209
N331236 N331236 E1364112 E1364112
N324944 N324945 E1365256 E1365254
Record ID: 2014002337
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