Facies and Provenance Modeling of Thrust-Derived, Synorogenic Conglomerates

本文详细研究了两个同造山期砾岩 是落基山脉逆冲断层作用的产物 东北部山地前陆与科迪勒拉冲断带 犹他州和怀俄明州西北部。 的主要目标 建议的工作将是开发逆冲断层的相模型- 形成冲积扇沉积， 同造山期砾岩的物源模式 标准 沉积学、岩相学和孢粉学数据将 收集和建筑的三维分布 每个扇存款内的相元素将由 在大型三维曝光中绘制详细的岩相图。 工作成果将为 逆冲断层隆起的去顶以及随之而来的 邻近盆地的冲积扇沉积。 此外该 拟议的工作将产生重要的新数据，以限制主要的 在犹他州东北部的科迪勒拉发生的逆冲事件， 位于怀俄明州西北部落基山脉前的地区。

This is a detailed study of two synorogenic conglomerates that were deposited in response to thrust faulting in the Rocky Mountain foreland and the Cordilleran thrust belt in northeastern Utah and northwestern Wyoming. The chief objectives of the proposed work will be to develop facies models for thrust- generated alluvial-fan deposits and to develop quantitative provenance models for synorogenic conglomerates. Standard sedimentologic, petrographic and palynologic data will be collected and the three-dimensional distribution of architectural facies elements within each fan deposit will be determined by detailed facies mapping in large, three-dimensional exposures. Results of the work will provide a comprehensive model for the unroofing of thrust-faulted uplifts and consequent deposition of alluvial-fan sediments in adjacent basins. In addition, the proposed work will yield important new data to constrain major episodes of thrusting in the Cordillera of northeastern Utah and the Rocky Mountain foreland of northwestern Wyoming.