Data report; Paleomagnetic directions from IODP Expedition 354, Hole U1451A, Cores 23H and 24H

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doi: 10.14379/iodp.proc.354.201.2018
Author(s): Reilly, Brendan T.; Stoner, Joseph S.; Selkin, Peter A.; Savian, Jairo F.; Meynadier, Laure
International Ocean Discovery Program, Expedition 354 Scientists, College Station, TX
Author Affiliation(s): Primary:
Oregon State University, College of Earth, Ocean and Atmospheric Sciences, Covallis, OR, United States
Other:
University of Washington, United States
Universidade Federal do Rio Grande do Sul, Brazil
Université Paris Diderot, France
Volume Title: Proceedings of the International Ocean Discovery Program; Bengal Fan; Expedition 354 of the riserless drilling platform; Singapore to Colombo, Sri Lanka; Sites U1449-U1455, 29 January-31 March 2015
Volume Author(s): France-Lanord, Christian; Spiess, Volkhard; Klaus, Adam; Schwenk, Tilmann; Adhikari, Rishi R.; Adhikari, Swostik K.; Bahk, Jang-Jun; Baxter, Alan T.; Cruz, Jarrett W.; Das, Supriyo Kumar; Dekens, Petra; Duleba, Wania; Fox, Lyndsey R.; Galy, Albert; Galy, Valier; Ge Junyi; Gleason, James D.; Gyawali, Babu R.; Huyghe, Pascale; Jia Guodong; Lantzsch, Hendrik; Manoj, M. C.; Martin, Yasmina Martos; Meynadier, Laure; Najman, Yani M. R.; Nakajima, Arata; Ponton, Camilo; Reilly, Brendan T.; Rogers, Kimberly G.; Savian, Jairo F.; Selkin, Peter A.; Weber, Michael E.; Williams, Trevor; Yoshida, Koki
Source: Proceedings of the International Ocean Discovery Program; Bengal Fan; Expedition 354 of the riserless drilling platform; Singapore to Colombo, Sri Lanka; Sites U1449-U1455, 29 January-31 March 2015, Christian France-Lanord, Volkhard Spiess, Adam Klaus, Tilmann Schwenk, Rishi R. Adhikari, Swostik K. Adhikari, Jang-Jun Bahk, Alan T. Baxter, Jarrett W. Cruz, Supriyo Kumar Das, Petra Dekens, Wania Duleba, Lyndsey R. Fox, Albert Galy, Valier Galy, Ge Junyi, James D. Gleason, Babu R. Gyawali, Pascale Huyghe, Jia Guodong, Hendrik Lantzsch, M. C. Manoj, Yasmina Martos Martin, Laure Meynadier, Yani M. R. Najman, Arata Nakajima, Camilo Ponton, Brendan T. Reilly, Kimberly G. Rogers, Jairo F. Savian, Peter A. Selkin, Michael E. Weber, Trevor Williams and Koki Yoshida; International Ocean Discovery Program, Expedition 354 Scientists, College Station, TX. Proceedings of the International Ocean Discovery Program, Expedition Reports, Vol.354, 7p. Publisher: International Ocean Discovery Program, Washington, DC, United States. ISSN: 2377-3189 CODEN: IDSDA6
Note: In English. 21 refs.; illus., incl. sketch map
Summary: International Ocean Discovery Program (IODP) Expedition 354 Site U1451 was drilled as the easternmost of seven sites forming a transect across the Bengal Fan at 8°N. Site U1451 recovered the oldest Bengal Fan sediments of the expedition, providing a long sedimentary record and valuable chronostratigraphic constraints on seismic imaging. Two cores recovered from Hole U1451A, Cores 23H and 24H, had uninterpretable archive-half remanent magnetizations measured on ship, despite having a calcareous clay lithology that was generally suitable for magnetostratigraphy in middle Pleistocene sediments. Shipboard biostratigraphy places these cores around the Pliocene/Pleistocene boundary. Paleomagnetic measurements of discrete subsamples, reported here, indicate that both Cores 23H and 24H contain no magnetic reversals, implying each core was deposited during a single polarity chron. These results suggest, based on sedimentation rate estimates, that the Gauss-Matuyama reversal and the Pliocene/Pleistocene boundary in Hole U1451A is located between the base of Core 23H and top of Core 24H (129.54-131.33 m CSF-A), although this needs to be confirmed by postexpedition biostratigraphic studies.
Year of Publication: 2018
Research Program: IODP Integrated Ocean Drilling Program
IODP2 International Ocean Discovery Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Bay of Bengal; Bengal Fan; Biostratigraphy; Cenozoic; Cores; Expedition 354; Foraminifera; IODP Site U1451; Indian Ocean; International Ocean Discovery Program; Lithofacies; Magnetic declination; Magnetostratigraphy; Marine environment; Microfossils; Nannofossils; Neogene; Pleistocene; Pliocene; Quaternary; Tertiary
Coordinates: N080025 N080025 E0884430 E0884428
Record ID: 2018074976
Copyright Information: GeoRef, Copyright 2018 American Geosciences Institute.