Lateral Variations in Seismic Structure of Atlantis Massif Oceanic Core Complex
亚特兰蒂斯地块大洋核杂岩地震结构的横向变化
基本信息
- 批准号:0927442
- 负责人:
- 金额:$ 23.22万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2009
- 资助国家:美国
- 起止时间:2009-09-01 至 2012-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-2).Oceanic core complexes (OCC) expose intrusive mafic rocks and lenses of mantle ultramafic rock, that are controlled by long-lived detachment faulting within the axial zone of a spreading center. The PI will analyze existing MCS OBS data at Atlantis Massif and the structural insights gained from detailed analysis of this oceanic core complex will allow her to compare it with other core complexes. Based on consistencies between the sites, or lack thereof, she will test current models of OCC formation and evolution. The existing seismic data at Atlantis Massif will allow the PI to document fairly detailed structure (several 10's m vertical resolution) within the upper ~1.5 km and broader scale structure (few-hundred meters vertical resolution) to lithospheric depths of 4-7 km. By combining MCS and OBS refraction data, she will obtain a velocity model along a grid of lines that cover each structural component of this OCC. The resulting tomographic model will allow her to determine the extent and continuity of likely mafic intrusive bodies, to characterize the transition between these bodies and crust that has normal velocity-depth properties, and to compare the signature of the domal core of the OCC to that of the adjacent hanging wall and conjugate outside corner crust. The project is large part for the support of a graduate student for the completion of a Ph.D. thesis. It will also allow further development of the SOBE processing system for MCS refraction analysis, a major community service, and it may help in future drilling on the Atlantis Massif.
该奖项是根据2009年美国复苏和再投资法案(公法111-2)资助的。洋核杂岩暴露出侵入基性岩和地幔超基性岩透镜体,它们受扩展中心轴向带内长寿命的滑脱断裂控制。PI将分析亚特兰蒂斯地块现有的MCS OBS数据,并从对该海洋核心复合体的详细分析中获得结构见解,这将使她能够将其与其他核心复合体进行比较。基于这些地点之间的一致性或缺乏一致性,她将测试OCC形成和演变的当前模型。亚特兰蒂斯地块现有的地震数据将允许PI记录1.5公里以上的相当详细的结构(垂直分辨率为10米)和更大范围的结构(垂直分辨率为几百米)至4-7公里的岩石圈深度。通过结合MCS和OBS折射数据,她将获得一个沿网格线的速度模型,该网格线覆盖了该OCC的每个结构组件。由此产生的层析模型将使她能够确定可能的基性侵入体的范围和连续性,表征这些侵入体与具有正常速度-深度特性的地壳之间的过渡,并将OCC的穹窿核与相邻上壁和共轭外角地壳的特征进行比较。该项目很大一部分是为了支持研究生完成博士论文。它还将允许进一步开发用于MCS折射分析的SOBE处理系统,这是一项主要的社区服务,并且它可能有助于未来在亚特兰蒂斯地块的钻探。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Alistair Harding其他文献
Physical properties of gabbroic rock exposed in oceanic core complexes- new borehole data from IODP Hole U1473A in the Indian Ocean and prior Mid-Atlantic Ridge results
暴露在大洋核心复合体中的辉长岩的物理性质——来自印度洋 IODP 孔 U1473A 的新钻孔数据和先前的大西洋中脊结果
- DOI:
- 发表时间:
2016 - 期刊:
- 影响因子:0
- 作者:
Donna Blackman;Benoit Ildefonse;Natsue Abe;Alistair Harding;Gilles Guerin and Exp360 Science Party - 通讯作者:
Gilles Guerin and Exp360 Science Party
Magma distribution across ridge-axis discontinuities on the East Pacific Rise from multichannel seismic images
东太平洋海隆脊轴不连续性上岩浆分布的多通道地震图像
- DOI:
10.1038/336156a0 - 发表时间:
1988-11-10 - 期刊:
- 影响因子:48.500
- 作者:
John C. Mutter;Ginger A. Barth;Peter Buhl;Robert S. Detrick;John Orcutt;Alistair Harding - 通讯作者:
Alistair Harding
Alistair Harding的其他文献
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{{ truncateString('Alistair Harding', 18)}}的其他基金
Collaborative Research: Axial 3-D - Exploring the linkages between complex magma chamber structure, caldera dynamics, fluid pathways and hydrothermal venting
合作研究:Axial 3-D - 探索复杂的岩浆房结构、火山口动力学、流体通道和热液喷发之间的联系
- 批准号:
1658018 - 财政年份:2018
- 资助金额:
$ 23.22万 - 项目类别:
Continuing Grant
Collaborative Research: 3D onshore-offshore seismic investigation of Japan's megathrusts
合作研究:日本巨型逆冲断层的 3D 陆上-海上地震调查
- 批准号:
1658010 - 财政年份:2017
- 资助金额:
$ 23.22万 - 项目类别:
Standard Grant
Collaborative Research: Next Generation Imaging of Magmatic Processes beneath the Juan de Fuca Ridge using MCS data
合作研究:使用 MCS 数据对胡安德富卡海岭下方的岩浆过程进行下一代成像
- 批准号:
1357076 - 财政年份:2014
- 资助金额:
$ 23.22万 - 项目类别:
Standard Grant
Seismic Reflectivity within Atlantis Massif: Examining Alteration Pathways & Extending Velocity Models to Greater Depths
亚特兰蒂斯地块内的地震反射率:检查蚀变路径
- 批准号:
1130709 - 财政年份:2011
- 资助金额:
$ 23.22万 - 项目类别:
Standard Grant
Coll. Res: Advanced MCS processing of the SISMOMAR 3D data volume: Exploring linkages within the magmatically driven hydrothermal system of the Lucky Strike Volcano (MAR, 37deg N)
科尔。
- 批准号:
0826481 - 财政年份:2008
- 资助金额:
$ 23.22万 - 项目类别:
Standard Grant
New Insights into Ridge Processes in the Lau Basin Back Arc from Amplitude Variation with Offset Studies of Multichannel Seismic Data
多道地震数据偏移研究的振幅变化对刘盆地后弧脊过程的新认识
- 批准号:
0649710 - 财政年份:2007
- 资助金额:
$ 23.22万 - 项目类别:
Standard Grant
Collaborative Proposal: An MCS Investigation to Study Axial Structure and Alteration of the Upper Crust at the Juan de Fuca Spreading Center
合作提案:胡安德富卡扩张中心上地壳轴向结构和蚀变的 MCS 调查
- 批准号:
0002600 - 财政年份:2002
- 资助金额:
$ 23.22万 - 项目类别:
Continuing Grant
Characterization of Crustal Reflectivity Patterns through Enhanced Imaging, AVO Analysis, and Integration of Seismic Reflection and Refraction Datasets
通过增强成像、AVO 分析以及地震反射和折射数据集的集成来表征地壳反射率模式
- 批准号:
0137184 - 财政年份:2002
- 资助金额:
$ 23.22万 - 项目类别:
Standard Grant
A Seismic Investigation of Fault Structure in the Lake Tahoe Basin using High Resolution CHIRP and Side-Scan Sonar
使用高分辨率 CHIRP 和侧扫声纳对太浩湖盆地断层结构进行地震调查
- 批准号:
0003839 - 财政年份:2000
- 资助金额:
$ 23.22万 - 项目类别:
Standard Grant
Amplitude Variation with Offset Studies and Pre-stack Imaging of the ARAD 3-D Reflectivity Volume
ARAD 3-D 反射率体积随偏移研究和叠前成像的幅度变化
- 批准号:
9911802 - 财政年份:2000
- 资助金额:
$ 23.22万 - 项目类别:
Continuing Grant
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