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浙西北的长兴阶有二种沉积类型,即碳酸盐岩相的长兴组和硅泥质岩相的大隆组。长兴组的层位和生物群分带。前人已作过较详细的研究,而浙西江山大隆组的生物群至今未
There are two sedimentary types of Changxing Formation in northwestern Zhejiang, that is, the Changxing Formation with carbonate facies and the Dalong Formation with siliceous lithofacies. The strata of Changxing Formation and the zonation of the biota. The predecessors have made a more detailed study, and the biota in the Zhexi Dalong Formation have not yet