浙江方岩组之研究

The Fangyan Formation io Zhejiang

关于方岩组的时代,层位等问题存在分歧。作者通过实地再观察,对上述问题提出新的看法。

Through field investigations of the Yongkan,Nanma,Dongyang,Huzheng and Xinchang Basins in eastern Zhejiang in 1980 and studies of previous data of stratigraphy and palaeontology,new results concerning the position,subdivision and correlation of the Fangyan Formation have leen achieved. 1.The Fangyan Formation overlies the Chaochuan Formation,but it may changes partially into the Chaochuan Formation.Its age is Late Cretaceous on the basis of its stratigraphic position and fossils. 2.The age of the Qujiang Group(including the Zhongdai,Jinhua and Cu- xian Formations)is Late Cretaceous;it can not be correlated with the Fang- yan Formation,because it covers the Fangyan Formation. 3.In the Ningbo Basin,members 1-4 of the sequence belong to the Fang- yan Formation,while member 5 to the Qujiang Group.