洞庭盆地白垩纪轮藻组合及其地层意义

doi:10.11743/ogg19830211

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洞庭盆地白垩纪轮藻组合及其地层意义
CRETACEOUS CHAROPHYTES ASSEMBLAGES IN DONGTING BASIN OF HUNAN AND THEIR STRATIGRAPHIC SIGNIFICANCE
1983年4卷第2期页码：229-235
网络首发：1983-06-25，

纸质出版：1983
DOI： 10.11743/ogg19830211
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洞庭盆地白垩纪轮藻组合及其地层意义[J]. 石油与天然气地质, 1983,4(2):229-235. DOI： 10.11743/ogg19830211.

CRETACEOUS CHAROPHYTES ASSEMBLAGES IN DONGTING BASIN OF HUNAN AND THEIR STRATIGRAPHIC SIGNIFICANCE[J]. 1983, 4(2): 229-235. DOI： 10.11743/ogg19830211.

摘要

洞庭盆地是湖南省最大的中、新生代陆相红色盆地

面积约15000平方公里

白垩-第三系极为发育。本文对洞庭盆地近十年石油普查所获白垩纪轮藻化石资料进行总结。化石产地包括洞庭盆地内部的桃源、常德、汉寿、澧县、沅江、安乡、湘阴、汨罗、益阳以及相邻的石门、慈利等地区。

Abstract

The Cretaceous Charophyte fossils in Dongting basin

Hunan province

can be divided into 4 fossil assemblages from bottom to top.The 1st assemblage (Flabellochara hebeiensis-Aclistochara caii assemblage) is distributed in the Qijiahe Formation

corresponding to Upper Barremian.The 2nd assemblage (Euaclistochara mundula-Mesochara symmetrica assemblage) occurs in the Sanyangang Formation

corresponding to Aptian-Albian.The 3rd assemblage (Porochara gongangzhaiensis-Charites guanpingensis assemblage) is distributed in the Fenshuiao Formation

corresponding to TuronianCampanian.The 4th assemblage (Euaclistochara dongtingensis-Maedlerisphaera minuscula assemblage)occurs in the Yanmatou Formation

corresponding to Mastrichtian.