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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00004090naa a2200685 4500
001oai:DiVA.org:su-59414
003SwePub
008110627s2009 | |||||||||||000 ||eng|
024a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-594142 URI
024a https://doi.org/10.1029/2009GC0027132 DOI
040 a (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Screaton, E.4 aut
2451 0a Interactions between deformation and fluids in the frontal thrust region of the NanTroSEIZE transect offshore the Kii Peninsula, Japan :b Results from IODP Expedition 316 Sites C0006 and C0007
264 1c 2009
338 a print2 rdacarrier
500 a authorCount :28
520 a Integrated Ocean Drilling Program (IODP) Expedition 316 Sites C0006 and C0007 examined the deformation front of the Nankai accretionary prism offshore the Kii Peninsula, Japan. In the drilling area, the frontal thrust shows unusual behavior as compared to other regions of the Nankai Trough. Drilling results, integrated with observations from seismic reflection profiles, suggest that the frontal thrust has been active since similar to 0.78-0.436 Ma and accommodated similar to 13 to 34% of the estimated plate convergence during that time. The remainder has likely been distributed among out-of-sequence thrusts further landward and/or accommodated through diffuse shortening. Unlike results of previous drilling on the Nankai margin, porosity data provide no indication of undercompaction beneath thrust faults. Furthermore, pore water geochemistry data lack clear indicators of fluid flow from depth. These differences may be related to coarser material with higher permeability or more complex patterns of faulting that could potentially provide more avenues for fluid escape. In turn, fluid pressures may affect deformation. Well-drained, sand-rich material under the frontal thrust could have increased fault strength and helped to maintain a large taper angle near the toe. Recent resumption of normal frontal imbrication is inferred from seismic reflection data. Associated decollement propagation into weaker sediments at depth may help explain evidence for recent slope failures within the frontal thrust region. This evidence consists of seafloor bathymetry, normal faults documented in cores, and low porosities in near surface sediments that suggest removal of overlying material. Overall, results provide insight into the complex interactions between incoming materials, deformation, and fluids in the frontal thrust region.
653 a subduction zone
653 a Nankai
653 a fluid flow
653 a frontal thrust
653 a IODP
653 a seamount
653 a NATURAL SCIENCES
653 a NATURVETENSKAP
700a Kimura, G.4 aut
700a Curewitz, D.4 aut
700a Moore, G.4 aut
700a Chester, F.4 aut
700a Fabbri, O.4 aut
700a Fergusson, C.4 aut
700a Girault, F.4 aut
700a Goldsby, D.4 aut
700a Harris, R.4 aut
700a Inagaki, F.4 aut
700a Jiang, T.4 aut
700a Kitamura, Y.4 aut
700a Knuth, M.4 aut
700a Li, C. -F4 aut
700a Liljedahl, L. Claessonu Stockholms universitet,Institutionen för geologi och geokemi4 aut
700a Louis, L.4 aut
700a Milliken, K.4 aut
700a Nicholson, U.4 aut
700a Riedinger, N.4 aut
700a Sakaguchi, A.4 aut
700a Solomon, E.4 aut
700a Strasser, M.4 aut
700a Su, X.4 aut
700a Tsutsumi, A.4 aut
700a Yamaguchi, A.4 aut
700a Ujiee, K.4 aut
700a Zhao, X.4 aut
710a Stockholms universitetb Institutionen för geologi och geokemi4 org
773t Geochemistry Geophysics Geosystemsg 10, s. Q0AD01-q 10<Q0AD01-x 1525-2027
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-59414
8564 8u https://doi.org/10.1029/2009GC002713

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