福建“佛昙群”的地质时代和地层特征

A discussion about geological age and stratigraphic characteristics of Futan Group in Fujian

关于“佛昙群”的地质时代，在过去的64a中，人们有着5种不同的见解：第三纪、上新世或第四纪、上新世、晚第三纪、上新世至早更新世。本文对5个原“佛昙群”露头剖面进行年代地层学研究，结果表明“佛昙群”中包含有中更新世、早更新世、上新世、中新世和渐新世的地层。结合前人对其他地方的“佛昙群”的研究资料，作者对“佛昙群”不同时期的地层特征进行总结，并认为，“佛昙群”的地质时代属于渐新世晚期至中更新世中期。

In the past 64a, five different geological ages such as:Tertiary, Pliocene or Quaternary,Pliocene,Neogene, Pliocene and Early Pleistocene are advocated to have been existed. The authors make research into the stratigraphic ages of the five outcrops that were believed to be Futan Group profiles in the past. The result show that the Futan Group contains the strata of Middle Pleistocene, Early Pleistocene, Pliocene, Miocene and Oligocene. In combining with the research data of Futan Group in other tareas, the authors summarize the stratigraphic characteristics of Futan Group in various periods and consider that the geological age of Futan Group belongs to the period from Late Oligocene to the middle phase of Middle Pleistocene.