摘要
运用露头层序地层学的方法 ,对四川汶川县七盘沟、广元市羊木东溪河震旦系剖面进行了详细的研究 ;将该区上震旦统地层划分为 1个Ⅱ级层序 ,4个Ⅲ级层序和 3个等时界面 ;建立了该区上震旦统等时地层格架 ,编制了相对海平面变化曲线。
Methods of outcrop sequence stratigraphy are applied to detail study of the Sinian System in the Qipan Valley, Wenchuan County and the Yangmudong Stream, Guangyuan City. The Upper Sinian Series may be divided into 1 second-order sequence, 4 third-order sequences and 3 isochronous surfaces on the basis of rock association, basic sequence and sedimentary facies etc. The isochronous stratigraphic framework of the Upper Sinian Series is set up and the curve of relative change of sea level in the Late Sinian is drawn.
出处
《四川地质学报》
2001年第3期133-137,共5页
Acta Geologica Sichuan
关键词
层序地层学
等时地层格架
震旦系
扬子台
岩相古地理
海平面变化
sequence stratigraphy
isochronous stratigraphic framework
Sinian System
western margin of the Yangtzi platform
