Fabric Transitions in an oceanic detachment fault; IODP Expedition 357
大洋滑脱断层中的组构转变;
基本信息
- 批准号:NE/P000711/1
- 负责人:
- 金额:$ 3.71万
- 依托单位:
- 依托单位国家:英国
- 项目类别:Research Grant
- 财政年份:2016
- 资助国家:英国
- 起止时间:2016 至 无数据
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
e have known for the last 50 years that Europe and America have been moving apart at about 2cm/yr by processes of seafloor spreading that generate new oceanic crust at the submarine mid-Atlantic Ridge. This is one of the fundamental processes of Plate Tectonics, and has shaped the planet that we live on. Yet because we cannot use standard remote sensing techniques using electromagnetic radiation to study the seafloor, in many ways we know more about the surface of Mars than we do about the floor of the Atlantic!Over the last 12 years improved sonar surveys of the mid Atlantic Ridge have revealed a new mode of seafloor spreading where a significant part of the plate divergence is taken up by slip on long-lived, convex upward detachment faults, rather than mainly by magmatic intrusion. Up to half of the Atlantic seafloor may have formed in this way.New drilling using sea bottom drills in IODP Expedition 357 means that we have better samples of an oceanic detachment fault than ever before. These samples will be studied using scanning electron microscope and electron probe techniques to look for the amount of deformation and the way it is localised by different overprinting alteration assemblages. In this way we will understand better how and why deformation takes place on these faults. These studies will be linked to geochemical and isotopic studies by other scientists to understand the role of seawater derived fluids in localising deformation
在过去的50年里,我们已经知道欧洲和美洲一直在以每年约2厘米的速度分开,这是由于海底扩张的过程,在大西洋中脊海底产生了新的海洋地壳。这是板块构造的基本过程之一,塑造了我们赖以生存的星球。然而,由于我们不能使用使用电磁辐射的标准遥感技术来研究海底,在许多方面,我们对火星表面的了解比对大西洋海底的了解还要多!在过去的12年里,改进了的大西洋中脊声纳调查揭示了一种新的海底扩张模式,在这种模式下,板块分裂的很大一部分是由长期存在的凸向上分离断层的滑动所占据的,而不是主要由岩浆侵入所占据的。多达一半的大西洋海底可能是这样形成的。在IODP远征357中使用海底钻头进行的新钻探意味着我们比以往任何时候都有更好的海洋剥离断层样本。这些样品将使用扫描电子显微镜和电子探针技术进行研究,以寻找变形的数量,以及通过不同的套印蚀变组合来定位变形的方式。这样我们就能更好地理解这些断层是如何以及为什么会发生变形的。这些研究将与其他科学家的地球化学和同位素研究联系起来,以了解海水衍生流体在局部变形中的作用
项目成果
期刊论文数量(7)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Expedition 399 Scientific Prospectus: Building Blocks of Life, Atlantis Massif
399 号探险队科学简介:生命的基石,亚特兰蒂斯地块
- DOI:10.14379/iodp.sp.399.2022
- 发表时间:2022
- 期刊:
- 影响因子:0
- 作者:McCaig A
- 通讯作者:McCaig A
Serpentinite in the Earth system.
地球系统中的蛇纹岩。
- DOI:10.1098/rsta.2019.0332
- 发表时间:2020
- 期刊:
- 影响因子:0
- 作者:McCaig AM
- 通讯作者:McCaig AM
Atlantis Massif Serpentinization and Life: Expedition 357 of the mission-specific drilling platform from and to Southampton, United Kingdom Sites M0068-M0076
亚特兰蒂斯地块蛇纹石化和生命:往返于英国南安普敦的特定任务钻井平台第 357 次探险 地点 M0068-M0076
- DOI:
- 发表时间:2017
- 期刊:
- 影响因子:0
- 作者:Früh-Green, G.L
- 通讯作者:Früh-Green, G.L
Alteration Heterogeneities in Peridotites Exhumed on the Southern Wall of the Atlantis Massif (IODP Expedition 357)
- DOI:10.1093/petrology/egy065
- 发表时间:2018-06
- 期刊:
- 影响因子:3.9
- 作者:S. Rouméjon;G. Früh-Green;B. Orcutt
- 通讯作者:S. Rouméjon;G. Früh-Green;B. Orcutt
Magmatism, serpentinization and life: Insights through drilling the Atlantis Massif (IODP Expedition 357)
- DOI:10.1016/j.lithos.2018.09.012
- 发表时间:2018-12
- 期刊:
- 影响因子:3.5
- 作者:G. Früh-Green;B. Orcutt;S. Rouméjon;M. Lilley;Y. Morono;C. Cotterill;S. Green;J. Escartín;
- 通讯作者:G. Früh-Green;B. Orcutt;S. Rouméjon;M. Lilley;Y. Morono;C. Cotterill;S. Green;J. Escartín;
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Andrew McCaig其他文献
Andrew McCaig的其他文献
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{{ truncateString('Andrew McCaig', 18)}}的其他基金
Investigation of reaction porosity and permeability, IODP Expedition 399, Atlantis Massif
亚特兰蒂斯地块 IODP 399 号探险队反应孔隙度和渗透率研究
- 批准号:
NE/Y001737/1 - 财政年份:2023
- 资助金额:
$ 3.71万 - 项目类别:
Research Grant
Alteration and hydrothermal circulation in the lower oceanic crust (IODP Expedition 345 Hess Deep Plutonic Crust)
下洋壳的蚀变和热液循环(IODP Expedition 345 Hess Deep Plutonic Crust)
- 批准号:
NE/K011030/1 - 财政年份:2012
- 资助金额:
$ 3.71万 - 项目类别:
Research Grant
Hydrothermal systems, thermal boundary layers and detachment faults in slow-spread ocean crust
缓慢扩张洋壳中的热液系统、热边界层和滑脱断层
- 批准号:
NE/I015035/1 - 财政年份:2011
- 资助金额:
$ 3.71万 - 项目类别:
Research Grant
High Temperature Fluid-Rock Interaction in the Oceanic Crust: A Fluid Inclusion Study, IODP Expeditions 309 & 312.
洋壳中的高温流体-岩石相互作用:流体包裹体研究,IODP 探险 309
- 批准号:
NE/D006597/1 - 财政年份:2006
- 资助金额:
$ 3.71万 - 项目类别:
Research Grant
Mechanisms of fluid penetration into gabbroic crust, IODP Site 1309, mid-Atlantic Ridge.
流体渗入辉长岩地壳的机制,IODP 站点 1309,大西洋中脊。
- 批准号:
NE/D001366/1 - 财政年份:2006
- 资助金额:
$ 3.71万 - 项目类别:
Research Grant
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