Multiple major faults at the Japan Trench: Chemostratigraphy of the plate boundary at IODP Exp. 343: JFAST
作者： Hannah S. Rabinowitz , Heather M. Savage , Terry Plank , Pratigya J. Polissar , James D. Kirkpatrick
DOI: 10.1016/J.EPSL.2015.04.010
关键词: Accretionary wedge 、 Drilling 、 International Ocean Discovery Program 、 Seismology 、 Fault (geology) 、 Plate tectonics 、 Chemostratigraphy 、 Stratigraphy 、 Trench 、 Geology
摘要: Abstract We determine the trace element stratigraphy of Site C0019, drilled during Japan Fast Trench Drilling Project (JFAST) International Ocean Discovery Program (IODP) Expedition 343, to illuminate structure plate boundary following Tohoku-Oki earthquake 2011. The stratigraphic units at JFAST site are compared undeformed Western Pacific sediments from two reference sites (Ocean (ODP) 1149 and Deep Sea (DSDP) 436). fingerprints in these sedimentary can be correlated individual samples. At site, we find that accretionary wedge downgoing core composed primarily Holocene Eocene sediments. There several age reversals gaps within sequence, consistent with multiple faults bottom 15 m core. Our results point candidate could have slipped 2011 earthquake, addition pelagic clay layer has been proposed as main decollement fault.
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T. Plank, The Chemical Composition of Subducting Sediments Treatise on Geochemistry. ,vol. 4, pp. 607- 629 ,(2014) , 10.1016/B978-0-08-095975-7.00319-3
Bernard A. Housen, Alex Maltman, Pierre Labaume, Structural Geology of the Décollement at the Toe of the Barbados Accretionary Prism Proceedings of the Ocean Drilling Program, Scientific Results. ,vol. 156, pp. 279- 292 ,(1997)
Yuki Sawai, Yuichi Namegaya, Yukinobu Okamura, Kenji Satake, Masanobu Shishikura, Challenges of anticipating the 2011 Tohoku earthquake and tsunami using coastal geology Geophysical Research Letters. ,vol. 39, ,(2012) , 10.1029/2012GL053692
Terry Plank, Katherine A. Kelley, Richard W. Murray, Lacie Quintin Stern, Chemical composition of sediments subducting at the Izu‐Bonin trench Geochemistry Geophysics Geosystems. ,vol. 8, ,(2007) , 10.1029/2006GC001444
Yoshihiro Ito, Takeshi Tsuji, Yukihito Osada, Motoyuki Kido, Daisuke Inazu, Yutaka Hayashi, Hiroaki Tsushima, Ryota Hino, Hiromi Fujimoto, Frontal wedge deformation near the source region of the 2011 Tohoku-Oki earthquake Geophysical Research Letters. ,vol. 38, ,(2011) , 10.1029/2011GL048355
Yasuyuki Nakamura, Shuichi Kodaira, Seiichi Miura, Christine Regalla, Narumi Takahashi, High-resolution seismic imaging in the Japan Trench axis area off Miyagi, northeastern Japan Geophysical Research Letters. ,vol. 40, pp. 1713- 1718 ,(2013) , 10.1002/GRL.50364
D. R. Faulkner, T. M. Mitchell, J. Behnsen, T. Hirose, T. Shimamoto, Stuck in the mud? Earthquake nucleation and propagation through accretionary forearcs Geophysical Research Letters. ,vol. 38, ,(2011) , 10.1029/2011GL048552
H. J. W. De Baar, M. P. Bacon, P. G. Brewer, Rare-earth distributions with a positive Ce anomaly in the Western North Atlantic Ocean Nature. ,vol. 301, pp. 324- 327 ,(1983) , 10.1038/301324A0
Frederick M Chester, Christie Rowe, Kohtaro Ujiie, James Kirkpatrick, Christine Regalla, Francesca Remitti, J Casey Moore, Virginia Toy, Monica Wolfson-Schwehr, Santanu Bose, Jun Kameda, James J Mori, Emily E Brodsky, Nobuhisa Eguchi, Sean Toczko, None, Structure and composition of the plate-boundary slip zone for the 2011 Tohoku-Oki earthquake. Science. ,vol. 342, pp. 1208- 1211 ,(2013) , 10.1126/SCIENCE.1243719
Robert F. Anderson, Michael P. Bacon, Peter G. Brewer, Removal of 230Th and 231Pa at ocean margins Earth and Planetary Science Letters. ,vol. 66, pp. 73- 90 ,(1983) , 10.1016/0012-821X(83)90127-9