水磨-苟家地区早二叠世岩石地层及沉积环境新认识

A NEW VIEW ON LITHOSTRATIGRAPHY AND SEDIMENTAL ENVIRONMENT OF EARLY PERMIAN IN SHUIMO-GOUJIA AREA

本文详细描述了水磨- 苟家地区飞来峰早二叠世地层剖面。首次将区内早二叠世地层划归于阳新组并细分为四个岩性段,从而建立了地层层序。讨论了各岩性段的岩石学特征、基本层序及沉积环境,证实区内属浅滩—潮坪相“红色岩系”地层属阳新组二段而不是三叠系,为区内地层归属及构造格架提供了新资料。

The early Permian sections in Shuimo Goujia area are described. It is recongnized to be Yangxin Formation and further divided into four Members. The stratigraphic sequence of Low Permian is first established in this area and the lithological features,basic sequences and sedimental environment of each Member are discussed.It is proved that the original “red color stratum” of Triassic of shoal tidal flat facies is accually the second Member of Yangxin Formation,which provides new evidence for stratigraphic division and structural evolution in this area.