辽北震旦系殷屯组层位归属及其区域对比问题探讨  

STRATIGRAPHIC ASSIGNMENT AND REGIONAL CORRELATION OF THE SINIAN YINTUN FORMATION IN NORTHERN LIAONING

作　　者：曲洪祥 刘杰 郝明 曲若达 李红梅 李升东 全秀杰 

机构地区：[1]辽宁省地质勘查院,辽宁大连116100

出　　处：《地质与资源》2013年第4期296-298,共3页Geology and Resources

摘　　要：辽北殷屯组分布于铁岭大甸子盆地西部,角度不整合于长城—蓟县系不同层位之上.该组以发育冰碛砾岩为其特征,相当于"南沱冰期"形成的产物,其岩性组合基本可以与鄂西峡东地区南华系南沱组对比.本文将殷屯组时代置于南华纪.The Yintun Formation is distributed in the west of Dadianzi basin in Tieling, Northern Liaoning Province, lying on Changchcng to Jixian systems with angular unconformity. This formation, characterized by developed till conglomerate, corresponds to the product of Nantuo Ice Age. Its lithological assemblage is comparable with that of the Nantuo Formation of Nanhua System in Xiadong area, Western Hubei Province. Therefore, this study assigns the Yingtun Formation to Nanhna Period.

关 键 词：殷屯组 南华系 南沱组 南沱冰期 冰碛砾岩 辽北 

分 类 号：P534.31[天文地球—古生物学与地层学]