Growth Faults of South Louisiana
Growth Faults of South Louisiana
复制标题
路易斯安那州南部的生长断层
DOI：
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发表时间：
1961
期刊：
影响因子：
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通讯作者：
Ray Ocamb
中科院分区：
文献类型：
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作者：
Ray Ocamb
摘要 给出了代表 312 个断层的超过 1452 个断层的物理特征的详细总结。作为南路易斯安那断层起源的序言，构建了墨西哥湾沿岸的前新生代历史。在这方面，有人认为南路易斯安那地区的基岩是北美大陆地区的延伸，并非起源于海洋。该地区在整个古生代都是正值，直到盐沉积后才被海水淹没。讨论了地槽发育的第一阶段、路易斯安那州中部无穹丘地区的地质、始新世断层走向和渐新世穹顶走向。生长断层是指断距随深度显着增加的断层，从上断层到下断层，相关断层明显增厚。趋势增长断层是区域性持续增长断层。提出了这些趋势生长断层的起源和发展理论，认为断层起源于褶皱，后来在快速、相当浅的水沉积环境中沿着内陆架区域到中陆架区域（类似于我们现在的大陆架）发展了其生长特征。详细地给出了这一概念的证据，其中表明，只有在海底受到浅水干扰剂剧烈、几乎持续的搅动的环境中，生长断层才能与沉积同时发展。显示了参考区域，其中根据已知现象评估理论概念。给出了本文对天然气和石油捕集的经济影响。
ABSTRACT A detailed summary of the physical characteristics of over 1452 fault cuts representing 312 faults is given. As a preface to the origin of South Louisiana faulting a pre-Cenozoic history of the Gulf Coast is constructed. In this respect it is suggested that the basement rocks of the South Louisiana area were an extension of the continental area of North America and were not oceanic in origin. The area was positive through all of the Paleozoic and was not submerged by marine waters until after salt deposition. The first stages of geosynclinal development, the geology of the domeless area of central Louisiana, the Eocene fault trend and the Oligocene domal trend are discussed. Growth faults are defined as those faults which have a substantial increase in throw with depth and across which, from the upthrown to the downthrown block, there is a great thickening of correlative section. Trend growth faults are regionally sustained growth faults. A theory of origin and development of these trend growth faults is made in which it is maintained that the faults originated as a result of folding and later developed their growth characteristics along an inner to middle shelf area (similar to our present continental shelf) in an environment of rapid, fairly shallow water deposition. Evidence for this concept is given in detail in which it is shown that growth faulting could have developed contemporaneously with sedimentation only in an environment where the sea floor was undergoing vigorous, nearly constant agitation by shallow water disturbing agents. A reference area is shown in which the theoretical concepts are evaluated with respect to known phenomena. The economic implications of the paper with respect to the entrapment of gas and oil are given.