Kanamatsu, Toshiya and Matsuo, Kazue (2003): Rock magnetic study of sediments from Japan Trench, ODP Leg 186; implications for deformation of sediments

Leg/Site/Hole:
ODP 186
ODP 186 1151
Identifier:
2004-011526
georefid
10.2973/odp.proc.sr.186.113.2003
doi
Creator:
Kanamatsu, Toshiya
Japan Marine Science and Technology Center, Deep Sea Research Department, Yokosuka, Japan
author
Matsuo, Kazue
Carnegie Institution of Washington, United States
author
Identification:
Rock magnetic study of sediments from Japan Trench, ODP Leg 186; implications for deformation of sediments
2003
In: Suyehiro, Kiyoshi, Sacks, I. Selwyn, Acton, Gary D., Acierno, Michael J., Araki, Eiichiro, Ask, Maria V. S., Ikeda, Akihiro, Kanamatsu, Toshiya, Kim, Gil Young, Li, Jingfen, Linde, Alan T., McWhorter, Paul N., Mora, German, Najman, Yanina M. R., Niitsuma, Nobuaki, Pandit, Benoy K., Roller, Sybille, Saito, Saneatsu, Sakamoto, Tatsuhiko, Shinohara, Masanao, Sun, Yue-Feng, Proceedings of the Ocean Drilling Program, scientific results, Western Pacific geophysical observatories; covering Leg 186 of the cruises of drilling vessel JOIDES Resolution; Yokohama, Japan, to Yokohama, Japan; sites 1150 and 1151, 14 June-14 August 1999
Texas A&M University, Ocean Drilling Program, College Station, TX, United States
186
The fabric of fine-grained sediments from the deep-sea terrace on the landward side of the Japan Trench, cored during Ocean Drilling Program Leg 186, was analyzed using the anisotropy of magnetic susceptibility. The purpose of this study was to document the magnetic fabrics formed in a tensional environment. Faults and joints (healed fractures) were found in the lower portion of recovered core. Analysis of these structures suggests an east-west tensional direction. The general shape of the magnetic fabric ellipsoid is fairly oblate. Bedding planes dip to the east in Hole 1151, and the magnetic fabric is completely controlled by the bedding plane. The magnetic fabric in the interval highly affected by fracturing, however, shows higher anisotropy. Magnetic foliations, which have been reorientated using paleomagnetic north, incline eastward and westward.
English
Serial
Coverage:Geographic coordinates:
North:38.4500
West:143.2000East: 143.2000
South:38.4500
Stratigraphy; Structural geology; anhysteretic remanent magnetization; anisotropy; bedding; Cenozoic; deformation; faults; fine-grained materials; foliation; fractures; Japan Trench; joints; Leg 186; magnetic properties; magnetic susceptibility; magnetization; marine sediments; Neogene; North Pacific; Northwest Pacific; Ocean Drilling Program; ODP Site 1151; Pacific Ocean; paleomagnetism; planar bedding structures; remanent magnetization; sedimentary structures; sediments; structural analysis; style; Tertiary; West Pacific;
.