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北培地区下三叠统飞仙关组的双壳类与古水流关系

西南石油大学学报（自然科学版）

1993年 15卷第1期

阅读：125

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Title

RELATION BETWEEN BIVALVIA AND PALAEOCURRENT IN FEIXIANGUAN FORMATION OF LOWER TRIASSIC IN BEIBEI，CHONGQING

作者

邓涛

Authors

Deng Tao

单位

石油勘探系

Organization

Department of oil Exploration

摘要

Abstract

There are many fossils of Bivalvia in the marl of Feixianguan formation of Lower Triassic in Beibei,Chongqing.The shells' arrangement is regular.In the samples under study,the bisectors of the shells which pass through their beaks are parallel to the palaeocurrent sirection,and the beak indicates the current direction.After measuring 53 shells at random,we calcalated the palaeocurrent direction,which is 294,with mathematical statistics mathod,and proved these shell members ' sedimentary envirment to be tidal ditch on tidal flat of lagoon.

关键词：

古生物化石; 双壳纲; 古水流方向; 重庆; 飞仙关组;

Keywords:

Paleobiologic fossil; Bivalvia; Palaeocurrent direction; Chongqing;

基金项目

DOI

10.3863/j.issn.1000-2634.1993.01.005