鄂西娄山关组顶部古岩溶不整合面的发现及层序地层学意义

详细信息

刊出日期: 1997-02-15

DISCOVERY OF PALEOKARST UNCONFORMITY ON TOP OF THE LOUSHANGUAN FORMATION,WESTERN HUBEI,AND ITS SIGNIFICANCE FOR SEQUENCE STRATIGRAPHY

Publish Date: 15 February 1997

摘要: 鄂西娄山关组顶部存在古岩溶不整合面，有众多陆上暴露和溶蚀标志，表明其产生受寒武纪末海平面下降事件的控制。它不仅形成了碳酸盐台地上典型的Ⅱ型层序界面，而且恰与寒武—奥陶纪年代地层界线相重合，体现了层序界面、年代界线和事件界线三位一体的有机结合
Abstract: There exists paleokarst unconformity on top of the Loushanguan Formation,western Hubei.Numerous marks of subaerial exposures and dissolution indicate that the generation of paleokarst surfaces was controlled by the sea level lowering event at the end of the Cambrian.They not only form the typical Ⅱ type sequence boundary of the carbonate platform,but also coincide with the Cambrian Ordovician chronostratigraphic boundary, the organic integration of sequence boundary,chronostratigraphic boundary and event boundary.
- paleokarst unconformity /
- sequence stratigraphy /
- Loushanguan Formation