REDEFINITION OF UPPER PERMIAN SHAJINGZI FORMATION IN KEPING, XINGJIANG

Liu Bingli; Li Luozhao; Jiang Yanwen; Li Yibin; Xiao Chuantao; Zhou Shuyuan

doi:10.11743/ogg19950302

Views : 0 下载量: 526 CSCD: 0

PDF
Export
Share
Collection
Album

REDEFINITION OF UPPER PERMIAN SHAJINGZI FORMATION IN KEPING, XINGJIANG
Vol. 16, Issue 3, Pages: 211-215(1995)
Online First：25 September 1995，

Published：1995
DOI： 10.11743/ogg19950302
稿件说明：

移动端阅览

DOI：

Liu Bingli, Li Luozhao, Jiang Yanwen, et al. REDEFINITION OF UPPER PERMIAN SHAJINGZI FORMATION IN KEPING, XINGJIANG[J]. 1995, 16(3): 211-215. DOI： 10.11743/ogg19950302.

摘要

根据在柯坪县印干村西沙井子组大量分形类、双壳类和腹足类化石的发现

以及对剖面层序的再认识

重新厘订沙井子组的顶底界限:底界为下二叠统开派兹雷克组最末一层玄武岩或火山碎屑岩的顶面

二者为整合关系;顶界以灰绿色泥岩、粉砂岩与上覆下第三系砖红色粉碎屑岩或上第三系灰色砾岩分界

接触关系为假整合或不整合。

Abstract

According to the great amounts of fossils includingostracodes

bivalvies and gastropodsdiscovered in the Shajingzi Formation in the west of Yingan Village

Keping County and therestudy on profile sequences

the authors have redefinited the bottom and top boundaries ofthe formation: the bottom boundary is the uppermost basalt or the top of vocaniclastic rockof the Kaipaizileik Formation which is in conformable contact with the Shajingzi Formation3the top boundary is grey-green mudstone and siltstone that is in disconformable contact withthe overlying Paleogene red coarse elastic rock and Neogene grey conglomerate.