Collaborative Research: Fabric and Seismic Anisotropy within the Lithospheric Mantle: Magnetic and Petrofabric Studies of Shear Zones in the New Caledonia Ophiolite
合作研究:岩石圈地幔内的组构和地震各向异性:新喀里多尼亚蛇绿岩剪切带的磁性和岩石组构研究
基本信息
- 批准号:0337498
- 负责人:
- 金额:$ 7.78万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2004
- 资助国家:美国
- 起止时间:2004-03-01 至 2006-02-28
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The development of fabric and anisotropy in mantle peridotites in natural shear zones of the New Caledonia ophiolite is being studied using a combination of electron backscatter diffraction and high-field anisotropy of magnetic susceptibility techniques to determine lattice preferred orientation. Electron backscatter diffraction provides an accurate measurement of lattice preferred orientation and yields information on slip systems and deformation temperatures. High-field anisotropy of magnetic susceptibility is a new method that provides the orientation of the fabric main axes and the degree of anisotropy by isolating the magnetic contribution of silicates. The high-field anisotropy of magnetic susceptibility method is considerably faster than electron backscatter diffraction and, therefore, allows mapping of deformation gradients at a higher resolution. The project is quantitatively establishing the degree of correlation between high-field magnetic anisotropy and mineral fabric anisotropy determined using electron backscatter diffraction and other well-established methods such as the universal stage technique. If successful, the new method will permit more rapid study of mantle fabrics over a large area, thus aiding interpretation of seismic anisotropy data from the mantle.
正在研究新喀里多尼亚蛇绿岩自然剪切带地幔橄榄岩的组构和各向异性的发展,利用电子背散射衍射和磁化率高场各向异性技术的组合来确定晶格择优取向。电子背散射衍射提供了晶格择优取向的精确测量,并产生有关滑移系统和变形温度的信息。磁化率高场各向异性是一种新方法,通过隔离硅酸盐的磁性贡献来提供织物主轴的方向和各向异性程度。磁化率的高场各向异性方法比电子背散射衍射快得多,因此可以以更高分辨率绘制变形梯度。该项目正在定量确定高场磁各向异性和矿物结构各向异性之间的相关程度,使用电子背散射衍射和其他成熟的方法(例如通用阶段技术)确定。如果成功,新方法将能够更快速地研究大面积的地幔结构,从而有助于解释地幔地震各向异性数据。
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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Basil Tikoff其他文献
Determining the initiation of shear zone deformation using titanite petrochronology
使用钛矿岩石年代学确定剪切带变形的起始
- DOI:
10.1016/j.epsl.2024.118620 - 发表时间:
2024 - 期刊:
- 影响因子:5.3
- 作者:
Claire O. Harrigan;S. Trevino;Mark D. Schmitz;Basil Tikoff - 通讯作者:
Basil Tikoff
Evaluation of Observationally Based Models Through Salience and Salience Maps
通过显着性和显着性图评估基于观测的模型
- DOI:
- 发表时间:
2024 - 期刊:
- 影响因子:0
- 作者:
E. Nelson;Basil Tikoff;Thomas Shipley;Alexander D. Lusk;Cristina Wilson - 通讯作者:
Cristina Wilson
Basil Tikoff的其他文献
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{{ truncateString('Basil Tikoff', 18)}}的其他基金
Collaborative Research: GEO OSE Track 2: Developing CI-enabled collaborative workflows to integrate data for the SZ4D (Subduction Zones in Four Dimensions) community
协作研究:GEO OSE 轨道 2:开发支持 CI 的协作工作流程以集成 SZ4D(四维俯冲带)社区的数据
- 批准号:
2324710 - 财政年份:2024
- 资助金额:
$ 7.78万 - 项目类别:
Standard Grant
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$ 7.78万 - 项目类别:
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$ 7.78万 - 项目类别:
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2222610 - 财政年份:2023
- 资助金额:
$ 7.78万 - 项目类别:
Standard Grant
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- 批准号:
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- 资助金额:
$ 7.78万 - 项目类别:
Continuing Grant
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$ 7.78万 - 项目类别:
Standard Grant
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- 批准号:
2020057 - 财政年份:2020
- 资助金额:
$ 7.78万 - 项目类别:
Standard Grant
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- 批准号:
1928273 - 财政年份:2019
- 资助金额:
$ 7.78万 - 项目类别:
Standard Grant
Workshop: Developing standards and digital infrastructure for structural geology and experimental deformation
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- 批准号:
1848899 - 财政年份:2018
- 资助金额:
$ 7.78万 - 项目类别:
Standard Grant
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合作研究:FW-HTF:整合认知科学和智能系统以增强地球科学实践
- 批准号:
1839730 - 财政年份:2018
- 资助金额:
$ 7.78万 - 项目类别:
Standard Grant
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