摘要
The Hekou Formation was set by the Petroleum Geological Team of Fujian in 1979. The type-section of this formation located at Hekou Basin in western Ninghua County of Fujian consists mainly of red conglomeratic sandstone, siltstone and greyish-green mudstone with lime. Since Prof. Chen Xü proposed the age of Eogene for the corresponding Guanzhai red sandstone in western Fujian, bivalves and other fossils were first discovered by
