元谋盆地新第三纪地层兼论“甘棠组”

On the Neogene of the Yuanmou Basin with dicussion about the "Gantang Formation

元谋盆地南部的甘棠村西剖面和沙沟村西剖面的岩性岩相及其所含生物化石性质，应属同时同相的地质体，沙沟组已具“甘棠组”的内涵，后者应予废除。北部的小河组与沙沟组，不仅是截然不同性质的两个地质体，其中含有的生物化石也不同，小河组的层位低于沙沟组，故把小河地区合古猿化石层（小河组）划归沙沟组不妥。

According to the section near the Gantang village, Jiang et al. established the 'Gantang Formation' and considered the Xiaohean beds bearing the ramapithecoid mammalian fauna to be 'Gantang Formation'. But they are different geological bodies and contain different mammalian fossils respectively and there is no contraposed continuity between them. Jiang et al. regarded the 'Gantang Formation' as not corresponding to the Shagou Formation but overlapping the Shagou beds. The Shagou and Gantang sections were deposited in the similar depositional environment and contain similar mammalian fossils so that the 'Gantang Formation' is just the Shaogou Formation and invalid.