Models of Lithospheric Stresses in the Cenozoic

新生代岩石圈应力模型

• 批准号: 9980551
• 负责人: Carolina Lithgow-Bertelloni
• 金额: $ 18.4万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-03-15 至 2004-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9980551&HistoricalAwards=false
• 关键词: Models; Lithospheric; Stresses; Cenozoic

Lithgow-Bertelloni 9980551 The PI proposes to develop models of lithospheric stress to assess the relative contributions of long-wavelength intra-lithospheric, plate boundary tractions, and mantle sources to the stress field. The following questions will be addressed in detail: 1) Does mantle flow contribute to the intraplate stress field? 2) Can a long-wavelength contribution in lithospheric sources be distinguished? What is their relative magnitude compared to the mantle derived tractions? 3) What can be said to first order about how the stress field evolved during the Cenozoic? Can any questions about the cause of plate rearrangements be answered? 4) What are the consequences of abrupt changes in plate motion on the state of stress of a plate? Does a new fracturing pattern develop? This research will contribute to our understanding of the interplay between plate tectonics and the dynamics of the Earth's interior.

Lithgow-Bertelloni 9980551 PI建议开发岩石圈应力模型，以评估长波长岩石圈内、板块边界牵引力和地幔源对应力场的相对贡献。 本文将详细讨论以下问题：1）地幔流对板内应力场有贡献吗？ 2)能否区分岩石圈源中的长波长贡献？ 与地幔牵引力相比，它们的相对大小是多少？ 3)关于新生代期间应力场如何演变，我们可以说些什么？关于板块重排的原因有什么问题可以回答吗？ 4)板块运动的突然变化对板块的应力状态有什么影响？是否会形成新的压裂模式？ 这项研究将有助于我们了解板块构造和地球内部动力学之间的相互作用。