Subsidence History of a Foreland Basin within a Thrust-Belt Recess: The Need for a Three-Dimensional Approach

冲断带凹陷内前陆盆地的沉降历史：需要三维方法

• 批准号: 9406216
• 负责人: William Thomas
• 金额: $ 6.5万
• 依托单位: University of Kentucky Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-10-01 至 1996-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9406216&HistoricalAwards=false
• 关键词: Subsidence; History; Foreland; Basin; within

9406216 Thomas Thrust belts worldwide are characterized by large-scale bends in trace: salients and recesses. As thrust belts advance they load the craton edge, producing foreland basins. Most previous studies of foreland basin formation use either salients or straight portions in order to avoid three-dimensional complexities in thrust direction. This study will take advantage of a large subsurface data base to model the development of a recess (the Black Warrior foreland basin) in which convergence of thrusting from different directions has resulted in a complex pattern of structural interference, diverse progradation of sediment wedges and numerous along-strike changes in thrusting, lading and subsidence. Results should help understand these more complex interactions, which will be of use in understanding foreland basins elsewhere.

小行星9406216托马斯 世界范围内的冲断带的特征是在迹线上的大规模弯曲：凸起和凹陷。 当冲断带前进时，它们会挤压克拉通边缘，形成前陆盆地。 以往对前陆盆地形成的研究大多采用凸起或直线部分，以避免逆冲方向的三维复杂性。 这项研究将利用一个大型地下数据库的优势，模拟一个凹陷（黑武士前陆盆地）的发展，其中从不同方向的逆冲作用的收敛导致了复杂的结构干扰模式，不同的沉积物楔和许多沿走向的逆冲作用，装载和沉降的变化。 研究结果应该有助于理解这些更复杂的相互作用，这将有助于了解其他地方的前陆盆地。