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）
| 年 | 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 |