Inverse and Forward Modeling of the Utah System of Colorado Plateau Basement-Cored Uplifts

科罗拉多高原基底核心隆起犹他系统的反演和正演模拟

• 批准号: 0001222
• 负责人: George Davis
• 金额: $ 16.11万
• 依托单位: University of Arizona
• 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: 2000-07-01 至 2003-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0001222&HistoricalAwards=false
• 关键词: Inverse; Forward; Modeling; Utah; System

Davis0001222In large-scale systems of thin-skinned folding and thrusting a more or less uniform regional stress field is assumed and there is generally a distinct parallelism of folds and thrusts observed oriented approximately perpendicular to the direction of tectonic shortening. However, where the structures are not parallel, it does not follow that the stress field was not regionally uniform; basement inherited features can control structural orientations resulting from a homogeneous stress field. This project will use extensive spatial kinematic data from basement-cored uplifts in the Colorado Plateau that have diverse orientations and model the stress field that was responsible. It is expected that this work will illuminate the regional variations in the Laramide stresses acting on the Colorado Plateau and the effect various pre-existing basement features may have had on the final orientations of various structures. Results should help develop an integrated overview of the structural response of the Colorado Plateau to Laramide tectonics.

假定戴维斯0001222在薄皮折叠和推力或多或少均匀的区域应力场的大规模系统中，通常存在明显的褶皱和推力，观察到的定向近似于垂直于构造缩短的方向。 但是，如果结构不平行，则不认为应力场在区域上并不均匀。地下室继承的特征可以控制由均匀应力场引起的结构取向。 该项目将使用科罗拉多高原的地下室升高的广泛空间运动数据，这些数据具有多种取向，并建模了负责的应力场。 预计这项工作将阐明作用于科罗拉多高原的Laramide应力的区域变化，并且各种现有的地下室特征可能对各种结构的最终方向产生了影响。 结果应有助于发展科罗拉多高原对Laramide构造学的结构响应的综合概述。