- Geologic Setting
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Publisher SummaryThis chapter focuses on the paleogeographic setting and the stratigrapy setting of northwestern Hunan and eastern Guizhou of China. Major regions of palegeographic setting, defined by sedimentary facies and fauna, are the Yangtze Platform, the Jiangnan Slope Belt, and the Jiangnan Basin. The Yangtze Platform are located tropically, and receive sediments ranging from dolostones, phosphorites, and evaporites to siliciclastics such as black shales, calcareous and carbonaceous shales, siltstones, and marls. Strata representing the upper part of the Cambrian System in northwestern Hunan were originally subdivided into four formations––namely, Aoxi, Huaqiao, Chefu, and Bitiao. It discusses the three measured sections in the Huaqiao Formation of northwestern Hunan and also describes their formation. Cambrian polymerid and agnostoid trilobites have markedly different paleogeographic distributions…

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