期刊论文

From Sequence-Stratigraphic Division to the Establishment of Sequence-Stratigraphic Framework, the Middle to Upper Cambrian in the Upper-Yangtze Region

中文

沉积学报

Acta Sedimentologica Sinica

1000-0550

2006

24

5

617-626

10.3969/j.issn.1000-0550.2006.05.001

中国石油化工股份有限公司科技工程重点项目(QZ-2005-18)资助；

本校为其他机构

上扬子区特别是贵州及邻区的中、上寒武统发育完整,是一套从少量灰岩到大套白云岩所组成的地层序列;以娄山关群白云岩为代表的自北西而南东的进积作用穿时,代表了与二级海退作用相对应的碳酸盐台地进积作用的基本特征,从而形成一个复杂而有序的层序地层格架。在研究区域,特别是浅水台地背景之中,从厚度较小的含化石的陡坡寺组到厚度近千米的贫乏化石的娄山关群白云岩,给层序地层研究带来了许多困难;而在较深水背景之中的中、上寒武统,沉积相序列的有序性正好弥补浅水背景中的不足。中、上寒武统组成一个二级层序,其中可以进一步划分为七个三级层序,形成一个有序的海侵—海退旋回序列。伴随着上述...

In the Upper-Yangtze region, especially in the Guizhou Province and its adjacent areas, the Middle to Upper Cambrian is well developed and is marked by a succession from limestone to dolomite. The progressive diachronism represented by the great-thick ＂Loushanguan Group dolomite＂ indicates a progression of carbonate platform resulted from the second-order regression. Thus, a complex and regular sequence-stratigraphic framework of the Middle to Upper Cambrian was formed in the Upper-Yangtze region. In the shallow-water background, the Middle t...