Extensional models for the formation of sedimentary basins and continental margins
Extensional models for the formation of sedimentary basins and continental margins
复制标题
沉积盆地和大陆边缘形成的伸展模型
DOI：
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发表时间：
1987
期刊：
影响因子：
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通讯作者：
B. Célérier
中科院分区：
文献类型：
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作者：
J. Sclater;B. Célérier
两公里厚的沉积物覆盖了70%以上的大陆地壳。主要成藏发生在沉积盆地和大陆架。最大沉降区往往与地壳较薄和伸展迹象有关。在提出的解释这种下沉的概念中，统一扩展被证明是最有用的。基于这一概念的模型考虑了盆地和陆架的总体特征，并为研究沉降史提供了一种定量方法。然而，需要进行修正，以解释大多数地区的详细下沉，并解释早期隆起的地区。与断层上隆起的总和低估了伸展量的问题似乎得到了解决。这个问题和修改导致了模型的使用受到限制。然而，它们需要对所有数据进行量化评估，这一优势远远抵消了这些限制。由于这一要求，它们在数据采集程序的设计中具有很大的工具价值。
Two kilometers of sediment covers more than 70% of the continental crust. The major accumulations occur in sedimentary basins and at continental shelves. The areas of maximum subsidence are often associated with thin crust and evidence of extension. Of the concepts advanced to explain this subsidence, uniform extension has proved the most useful. Models based on this concept account for the gross features of the basins and shelves and provide a quantitative method for examining the history of subsidence. However, modifications are needed to explain the detailed subsidence of most areas and to account for regions with early uplift. Problems associated with the sum of the heave on the faults underestimating the amount of extension appear resolved. The problem and modifications lead to limitations in the use of the models. However, the advantage, that they require a quantitative evaluation of all the data, more than offsets these limitations. Because of this requirement they have great value as tools in the design of data acquisition programs.