Kawabata, H. et al. (2009): Description of basement volcanic sequences in holes U1342A and U1342D on Bowers Ridge in the Bering Sea

Leg/Site/Hole:
Identifier:
2011-032777
georefid

10.2204/iodp.proc.323.110.2011
doi

Creator:
Kawabata, H.
Japan Agency for Marine-Earth Science and Technology, Institute for Research on Earth Evolution, Yokosuka, Japan
author

Sato, K.
University of California-Santa Cruz, United States
author

Tatsumi, Y.
Integrated Ocean Drilling Program, United States
author

Scholl, D. W.
Lamont-Doherty Earth Observatory, United States
author

Takahashi, Kozo
Moss Landing Marine Laboratories, United States
author

Ravelo, Christina
University of Tokyo, Japan
author

Alvarez Zarikian, Carlos
Eidgenoessische Technische Hochschule Zuerich, Switzerland
author

Guerin, Gilles
University of Massachusetts, United States
author

Liu, Tanzhuo
Chinese Academy of Sciences, South China Sea Institute of Oceanology, China
author

Aiello, Ivano
Universidad de Salamanca, Spain
author

Asahi, Hirofumi
Williams College, United States
author

Bartoli, Gretta
Macquarie University, Australia
author

Caissie, Beth
Seoul National University, South Korea
author

Chen Muhong
University of Tromso, Norway
author

Colmenero-Hidalgo, Elena
Japan Agency for Mairne-Earth Science and Technology, Japan
author

Cook, Mea
Kochi University, Japan
author

Dadd, Kelsie
British Geological Survey, United Kingdom
author

Huh, Youngsook
Univesity of Southern California-Los Angeles, United States
author

Husum, Katrine
Carl von Ossietzky Universitaet Oldenburg, Germany
author

Ijiri, Akira
Oregon State University, United States
author

Ikehara, Minoru
National Geophysical Research Institute, India
author

Kender, Sev
Ibaraki University, Japan
author

Lund, Steve
Universite Pierre et Marie Curie, France
author

Maerz, Christian
Universite du Quebec a Montreal, France
author

Mix, Alan
Aarhus Universitet, Denmark
author

Ojha, Maheswar
University of Alaska-Fairbanks, United States
author

Okada, Makoto
University of Rhode Island, United States
author

Okazaki, Yusuke
INETI, Portugal
author

Onodera, Jonaotaro
Max Planck Institute for Marine Microbiology, Germany
author

Pierre, Catherine
University of Alaska-Fairbanks, United States
author

Radi, Taoufik
Kyushu University, Japan
author

Risgaard-Petersen, Nils
University of California-Santa Cruz, United States
author

Sakamoto, Tatsuhiko
Integrated Ocean Drilling Program, United States
author

Schrum, Heather
Lamont-Doherty Earth Observatory, United States
author

Stroynowski, Zuzanna N.
Moss Landing Marine Laboratories, United States
author

Walsh, Emily A.
University of Tokyo, Japan
author

Wehrmann, Laura
Eidgenoessische Technische Hochschule Zuerich, Switzerland
author

Identification:
Description of basement volcanic sequences in holes U1342A and U1342D on Bowers Ridge in the Bering Sea
2009
In: Takahashi, Kozo, Ravelo, Chirstina, Alvarez Zarikian, Carlos, Guerin, Gilles, Liu, Tanzhuo, Aiello, Ivano, Asahi, Hirofumi, Bartoli, Gretta, Caissie, Beth, Chen Muhong, Colmenero-Hidalgo, Elena, Cook, Mea, Dadd, Kelsie, Huh, Youngsook, Husum, Katrine, Ijiri, Akira, Ikehara, Minoru, Kender, Sev, Lund, Steve, Maerz, Chirstian, Mix, Alan, Ojha, Maheswar, Okada, Makoto, Okazaki, Yusuke, Onodera, Jonaotaro, Pierre, Catherine, Radi, Taoufik, Risgaard-Petersen, Nils, Sakamoto, Tatsuhiko, Scholl, David, Schrum, Heather, Stroynowski, Zuzanna N., Walsh, Emily A., Wehrmann, Laura, Proceedings of the Integrated Ocean Drilling Program; Bering Sea paleoceanography; Expedition 323 of the riserless drilling platform; Victoria, British Columbia (Canada), to Yokohama, Japan; 5 July-4 September 2009
IODP Management International, Washington, DC, United States
323
At Ulm Plateau, near the eastern end of the crestal area of Bowers Ridge, basement of lithified volcaniclastic sediment ( approximately 42 m) was recovered at Integrated Ocean Drilling Program (IODP) Site U1342 beneath a thin cover ( approximately 49 m) of surface sediment. Recovery of basement rock provided an unprecedented opportunity to address the origin and evolution of this enigmatic appendage of the Aleutian arc massif. Contrasting hypotheses have been proposed for the formation of the arc massif of Bowers Ridge, either in the Cretaceous North Pacific Ocean exotic to the Bering Sea or within the Bering Sea during the Eocene formation of the Aleutian arc. The volcanic sequence recovered from Site U1342 was divided into six major lithologic units: Unit I, vesiculated andesitic lava flow; Unit II, interbedded volcanic sandstone and polymict volcanic conglomerate; Unit III, monomict volcanic conglomerate; Unit IV, interbedded volcanic sandstone and polymict volcanic conglomerate; Unit V, monomict volcanic conglomerate; and Unit VI, polymict volcanic conglomerate. Units III and IV represent hydroclastic volcaniclastic deposits, whereas Units II, IV, and VI are epiclastic volcaniclastic strata.
Coverage:Geographic coordinates:
North:54.4942
West:176.5504East: 176.5504
South:54.4942

Stratigraphy; andesitic composition; basement; Bering Sea; boreholes; Bowers Ridge; Cenozoic; clastic rocks; conglomerate; cores; Cretaceous; crust; description; drilling; Eocene; Expedition 323; igneous rocks; Integrated Ocean Drilling Program; IODP Site U1342; lava; lithostratigraphy; marine drilling; Mesozoic; North Pacific; Northwest Pacific; oceanic crust; Pacific Ocean; Paleogene; sandstone; sedimentary rocks; Tertiary; volcanic rocks; volcaniclastics; West Pacific;

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