Paleozoic Sedimentation in Montana Area
Paleozoic Sedimentation in Montana Area
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蒙大拿地区古生代沉积
DOI：
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发表时间：
1950
期刊：
影响因子：
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通讯作者：
L. L. Sloss
中科院分区：
文献类型：
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作者：
L. L. Sloss
蒙大拿州及邻近州和省的古生代沉积记录揭示了该地区构造框架对系统的岩性、分布和厚度的影响。每个系统的等厚线和岩相图，解释的位置和时间的活动的积极和消极的元素。研究表明，复杂的科迪勒拉地槽，威利斯顿盆地，蒙大拿州中部海槽，和怀俄明州陆架地区是重要的因素，在控制沉积作用的构造行为在沉积过程中。Sweetgrass拱在沉积过程中似乎影响不大，但前中泥盆世和前中侏罗世的抬升和剥蚀对古生代的分布和厚度产生了广泛的影响。
The record of Paleozoic sedimentation in Montana and adjacent states and provinces reveals the influence of the tectonic framework of the area on the lithologic character, distribution, and thickness of the systems. Isopach and lithofacies maps of each system are presented, with interpretations of the positions and times of activity of positive and negative elements. The study indicates that the complex Cordilleran geosyncline, Williston basin, Central Montana trough, and Wyoming shelf areas were important factors in controlling sedimentation by their tectonic behavior during deposition. The Sweetgrass arch appears to have had little influence during sedimentation, but pre-Middle Devonian and pre-Middle Jurassic uplift and erosion of the element broadly affected the prese t distribution and thickness of Paleozoic systems.