Mechanical Strength of Extended Lithosphere: Application tothe Exmouth Plateau, Northwest Australia

扩展岩石圈的机械强度：在澳大利亚西北部埃克斯茅斯高原的应用

• 批准号: 8918035
• 负责人: Garry Karner
• 金额: $ 14.98万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-01-01 至 1992-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8918035&HistoricalAwards=false
• 关键词: Mechanical; Strength; Extended; Lithosphere; Application

A major controversy presently exists over whether extended continental lithosphere, associated with extensional basins and passive continental margins, possesses mechanical strength (or flexural rigidity). This work will: (1) provide a critical examination of the assumptions and methods used in previous studies that concluded that extended lithosphere has negligible strength, (2) investigate the sensitivity of gravity anomalies to variations of flexural rigidity as a function of time since extension, and (3) determine the mechanical strength of the Exmouth plateau margin of northwest Australia.

目前存在着一个主要的争论，即与伸展盆地和被动大陆边缘相关的伸展大陆岩石圈是否具有机械强度（或弯曲刚性）。这项工作将：(1)对先前研究中得出的延伸岩石圈强度可以忽略不计的假设和方法进行了批判性的检验；(2)研究了重力异常对弯曲刚度变化的敏感性，作为延伸以来的时间函数；(3)确定了澳大利亚西北部埃克斯茅斯高原边缘的机械强度。