河南省寒武纪生物相划分及其意义

DIVISION OF THE CAMBRIAN BIOFACIES IN HENAN PROVINCE AND THEIR SIGNIFICANCE

摘要:

河南省横跨华北地台南缘和秦岭褶皱系东端。这里的寒武系发育良好,分布广泛,且有着不同类型的沉积相和古生物群。

Abstract:

Henan Province is situated across the southern margin of the North China platform and the eastern end of the Qinling fold system, where the Cambrian strata comprising various types of sedimentary facies and a variety of biotas are well developed and widely distributed.
Based on the analysis of the fossil communities, five Cambrian biofacies in Henan Province have been established, i.e. littoral tidal flat biofacies (BF₁), restricted shallow-water biofacies (BF₂), open shallow-water biofacies (BF₃), deeper-water shelf biofacies (BF₄) and stagnant basin biofacies (BF₅). Their characteristics are shown in Fig. 1.
The study of the Cambrian biofacies is of great importance to the recognition of sedimentary facies, to the division of the Cambrian biogeographic provinces and to the reconstruction of the Cambrian palaeogeography.