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新疆柯坪上三叠统沙井子组的重新厘订
石油与天然气地质
1995年 16卷 第No.3期
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Title
REDEFINITION OF UPPER PERMIAN SHAJINGZI FORMATION IN KEPING, XINGJIANG
作者
刘秉理
李罗照
美衍文
李艺斌
肖传桃
周淑媛
Authors
Liu Bingli
Li Luozhao
Jiang Yanwen
Li Yibin
Xiao Chuantao
Zhou Shuyuan
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.
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