汤原断陷白垩纪孢粉化石组合的发现及地层意义

DISCOVERY AND STRATIGRAPHIC ANALYSIS OF SPOROPOLLEN FOSSIL ASSEMBLAGE IN CRETACEOUS TANGYUAN DOWNCHASM

通过对汤Ｄ３井孢粉化石及岩石地层学的研究，发现该井下部含有特征明显的白垩纪孢粉化石组合，为汤原地区地层层序的建立、地层划分与对比，以及地质时代的确定提供了重要依据。

By analyzing sporopollen fossil and rock stratigraphy of well Tang D3, this paper discusses the discovery of Cretaceous sporopollen fossil assemblage with evident characteristic, which provides an important basis for establishing sequences and their division and correlation and determining geologic period in Tangyuan area.