Effects of Intra-Basinal Structures on Early Cretaceous Fluvial Systems (Lakota/Cloverly Formations), Central Cordilleran Foreland Basin

苏特纳9628367 拟议的工作的目标是定量重建古河道的几何形状和水力学，以及相关的冲积建筑早白垩世河流沉积在中央科迪勒支前陆盆地（CCFB）。 以前的工作表明，在中央和远端部分的CCFB的主要早白垩世河流的位置和流动模式的控制，部分，局部同沉积盆地内断层。 这项研究将精确阐明这种断层如何影响通道的几何形状（如宽度，深度，弯曲度，通道模式），水力学（如通道斜率，速度，流量），以及相关的通道，酒吧，通道带和河漫滩沉积物的分布。 这些参数将在以下方面进行比较和对比：（i）CCFB内的中间和远端设置;（ii）河流基本上位于已知结构上或附近的地方与结构距离几公里的地方;以及（iii）河流局部穿过结构的地方与它们包围它们的地方。 这项研究的结果应该是有价值的，为那些谁试图模拟盆内构造是如何表现在非海相填充物的积累，在中部和远端的前陆盆地。 此外，这项工作将是第一次定量记录局部同沉积断层对前第四纪河流沉积的影响。

Suttner 9628367 The goal of the proposed work is to quantitatively reconstruct paleochannel geometries and hydraulics, and associated alluvial architecture for early Cretaceous fluvial deposits in the Central Cordilleran Foreland Basin (CCFB). Previous work has shown that the location and flow patterns of the major early Cretaceous rivers in the medial and distal parts of the CCFB were controlled, in part, locally by syndepositional intra-basinal faulting. This study will elucidate precisely how this faulting influenced channel geometries (e.g. widths, depths, sinuosities, channel patterns), hydraulics (e.g. channel slopes, velocities, discharges), and the distribution of associated channel-bar, channel-belt, and floodplain deposits. These parameters will be compared and contrasted in (i) medial and distal setting within the CCFB, (ii) in places where the rivers were located essentially on or adjacent to known structures versus places where the structures were several kilometers away, and (iii) where the rivers locally crossed the structures versus where they paralleled them. Results of this study should be valuable for those who attempt to model how intra-basinal tectonism is manifested n the accumulation of nonmarine fill in the medial and distal parts of foreland basins. Moreover, this work will be the first of its kind to document quantitatively the effects of localized syndepositional faulting on pre-Quaternary fluvial sedimentation.