Exp. 335 Superfast Spreading Rate Crust 4

航海概要

テーマ

Superfast Spreading Rate Crust 4

航海期間

2011年4月13日~6月3日

掘削船

JOIDES Resolution/USIO

掘削地点

共同首席研究者

Damon Teagle & Benoit Ildefonse

J-DESC推薦の乗船研究者
氏名 所属(乗船時) 乗船中の役割
阿部なつ江 (海洋研究開発機構) Igneous Petrologist
足立佳子 (新潟大学) Igneous Petrologist
安間 了 (筑波大学) Structural Geologist
遠藤大介 (筑波大学) Structural Geologist
大泉 涼 (山形大学) Igneous Petrologist
宮下純夫 (新潟大学) Igneous Petrologist
MARIE, Python (京都大学) Alteration/Igneous Petrologist
PAYOT, Betchaida Dutes (金沢大学) Igneous Petrologist
航海の目的

Based on the results of three previous expeditions (206, 309, 312) and the subsequent IODP Proposal 522-Full5, this expedition aims to continue the mission to understand the accretion of oceanic crust formed at a superfast spreading rate at the East Pacific Rise. Previous drilling in Hole 1256D reached a total penetration of 1506 m, including 1250 m into the igneous crust. The hole passed through 345 m of sheeted dikes and continued 100 m into gabbroic rock. This new expedition will deepen Hole 1256D as far as possible into gabbro to complete coring and logging of an entire upper to mid-oceanic crustal section. The primary objectives are to (1) test models of mid-ocean ridge crustal accretion, (2) establish magmatic, hydrothermal, and tectonic processes and interactions, (3) determine the geological nature of layer 3 and the layer 2/3 boundary, and (4) constrain the magnetic contribution of the lower crust to marine magnetic anomalies.

関連ページ

>>http://iodp.tamu.edu/scienceops/expeditions/superfast_rate_crust.html(USIO)

IODP関連出版物

著者/タイトル 出版物
Proceedings of the IODP
2011 Expedition 335 Scientists

Superfast Spreading Rate Crust 4

IODP Preliminary Report
2010 Teagle, T.A.H., Ildefonse, B., and Blum, P.

Superfast Spreading Rate Crust 4

IODP Scientific Prospectus

プレス発表その他

海洋研究開発機構発表

統合国際深海掘削計画(IODP)第335次研究航海の開始について(平成23年4月12日)

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