Data report; Rock magnetism of sediment from IODP Expedition 334 Sites U1378 and U1379

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doi: 10.2204/iodp.proc.334.203.2015
Author(s): Usui, Yoichi
Integrated Ocean Drilling Program, Expedition 334 Scientists, College Station, TX
Author Affiliation(s): Primary:
Japan Agency for Marine-Earth Science and Technology, Department of Deep Earth Structure and Dynamics Research, Yokosuka, Japan
Other:
University of Tsukuba, Japan
Texas A&M University, United States
Lamont-Doherty Earth Observatory, United States
Leibniz Institute of Marine Sciences, Germany
Federal Institute for Geosciences and Natural Resources, Germany
Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement, France
Florida State University, United States
University of Tulsa, United States
Oregon State University, United States
Université de Montpellier II, France
Queensland University of Technology, Australia
University of Tokyo, Japan
Korea Institute of Geoscience and Mineral Resources, South Korea
Pennsylvania State University, United States
University of Edinburgh, United Kingdom
Geological Survey of Portugal, Portugal
Kobe University, Japan
Japan Agency for Marine-Earth Science and Technology, Japan
Dickinson College, United States
University of Washington, United States
Kyoto University, Japan
Tokyo Institute of Technology, Japan
University of Rochester, United States
National Institute of Oceanography, India
University of California, Santa Cruz, United States
Chinese Academy of Sciences, South China Sea Institute of Oceanology, China
Volume Title: Proceedings of the Integrated Ocean Drilling Program; Costa Rica seismogenesis project, Program A Stage 1 (CRISP-A1); Expedition 334 of the riserless drilling platform from and to Puntarenas, Costa Rica; Sites U1378-U1381, 13 March-12 April 2011
Volume Author(s): Vannucchi, Paola; Ujiie, Kohtaro; Stroncik, Nicole; Malinverno, Alberto; Arroyo, Ivonne; Barckhausen, Udo; Conin, Marianne J.; Foley, Susan Murr; Formolo, Michael J.; Harris, Robert N.; Heuret, Arnauld; Huftile, Gary J.; Kameda, Jun; Kim, Gil Young; Kutterolf, Steffen; Martino, Amanda J.; McCay, Gillian A.; Nuzzo, Marianne; Ohkushi, Ken'ichi; Saito, Saneatsu; Sak, Peter B.; Solomon, Evan A.; Stipp, Michael; Torres, Marta E.; Tsutsumi, Akito; Uno, Masaoki; Usui, Yoichi; Vadakkeyakath, Yatheesh; Yamamoto, Yuzuru; Xixi, Zhao; Zhu Junjiang
Source: Proceedings of the Integrated Ocean Drilling Program; Costa Rica seismogenesis project, Program A Stage 1 (CRISP-A1); Expedition 334 of the riserless drilling platform from and to Puntarenas, Costa Rica; Sites U1378-U1381, 13 March-12 April 2011, Paola Vannucchi, Kohtaro Ujiie, Nicole Stroncik, Alberto Malinverno, Ivonne Arroyo, Udo Barckhausen, Marianne J. Conin, Susan Murr Foley, Michael J. Formolo, Robert N. Harris, Arnauld Heuret, Gary J. Huftile, Jun Kameda, Gil Young Kim, Steffen Kutterolf, Amanda J. Martino, Gillian A. McCay, Marianne Nuzzo, Ken'ichi Ohkushi, Saneatsu Saito, Peter B. Sak, Evan A. Solomon, Michael Stipp, Marta E. Torres, Akito Tsutsumi, Masaoki Uno, Yoichi Usui, Yatheesh Vadakkeyakath, Yuzuru Yamamoto, Zhao Xixi and Zhu Junjiang; Integrated Ocean Drilling Program, Expedition 334 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program. Expedition Reports, Vol.334, 11p. Publisher: International Ocean Discovery Program, Washington, DC, United States. ISSN: 1930-1014 CODEN: IDSDA6
Note: In English. 17 refs.; illus., incl. 2 tables
Summary: Magnetic properties were measured on sediments from Integrated Ocean Drilling Program Expedition 334 Sites U1378 and U1379. Rock magnetic parameters (i.e., saturation magnetization, Ms; saturation remanence, Mrs; coercivity, Hc; and coercivity of remanence, Hcr) do not show simple downcore trends, sediment columns exhibit sporadic occurrence of layers with high Ms , and other rock magnetic parameters are different in these layers than in the rest of the sediment. Specifically, samples with high Ms show reduced Mrs/Ms indicating coarser magnetic grains in those samples. Thermomagnetic analyses suggest that low-Ti titanomagnetite is the main magnetic phase in samples with high Ms , whereas other minerals contribute to the magnetic character of samples with low Ms . The variable occurrence of multiple magnetic phases should be considered in future paleomagnetic studies using sediments from Sites U1378 and U1379.
Year of Publication: 2015
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 07 Marine Geology and Oceanography; 18 Geophysics, Solid-Earth; Cores; Costa Rica Seismogenesis Project; East Pacific; Expedition 334; Hysteresis; IODP Site U1378; IODP Site U1379; Integrated Ocean Drilling Program; Magnetic minerals; Magnetic properties; Magnetization; Magnetostratigraphy; Marine sediments; North Pacific; Northeast Pacific; Oxides; Pacific Ocean; Paleomagnetism; Remanent magnetization; Saturation magnetization; Sediments; Thermal analysis; Thermomagnetic analysis; Titanomagnetite
Coordinates: N083532 N083532 W0840438 W0840438
N084051 N084051 W0840201 W0840202
Record ID: 2015102896
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