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Site U1436

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posted on 2023-05-19, 04:44 authored by Tamura, Y, Busby, CJ, Blum, P, Guerin, G, Andrews, GDM, Barker, AK, Berger, JLR, Bongiolo, EM, Bordiga, M, DeBari, SM, Gill, JB, Hamelin, C, Jia, J, John, EH, Jonas, A-S, Martin JutzelerMartin Jutzeler, Kars, MAC, Kita, ZA, Konrad, K, Mahoney, SH, Martini, M, Miyazaki, T, Musgrave, RJ, Nascimento, DB, Nichols, ARL, Ribeiro, JM, Sato, T, Schindlbeck, JC, Schmitt, AK, Straub, SM, Vautravers, MJ, Yang, Y
International Ocean Discovery Program (IODP) Site U1436 was drilled as a geotechnical survey requirement for proposed D/V Chikyu drilling at Site IBM-4. Site U1436 is located at 32°23.88′N, 140°21.93′E in the Izu arc (Figure F1). It lies 1776 m below sea level in the western half of the Izu fore-arc basin, about 60 km east of the arc-front volcano Aogashima (Figures F1B, F2) and 170 km west of the axis of the Izu-Bonin Trench (Figure F3). Because Site U1436 is a geotechnical hole for proposed Site IBM-4, the first part of this section focuses on the background and objectives for Site IBM-4 ultradeep (~5.5 km) drilling to arc middle crust, which is inferred to represent juvenile continental crust. However, Site U1436 yielded a rich record of Quaternary explosive volcanism; therefore, the second half of this section provides background on Quaternary volcanism in the Izu-Bonin arc and objectives for ash recovered.

History

Publication title

Proceedings of the International Ocean Discovery Program

Volume

350

Issue

MS 350-103

Pagination

1-43

ISSN

2377-3189

Department/School

School of Natural Sciences

Publisher

Texas A & M

Place of publication

United States

Rights statement

Copyright the Authors. Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) license https://creativecommons.org/licenses/by/3.0/

Repository Status

  • Open

Socio-economic Objectives

Expanding knowledge in the earth sciences

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