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High-resolution Sequences in Epicontinental Basin of Western Shandong and Sea-level Oscillation Control
Author(s): WEI Jiuchuan1, LI Zengxue1, SU Shurong2(1.dept.ofgeos.sust, TAIAN 271019, china, 2.GEOLOGICAL Engineeringcompany, YANZHOU Coalmininggroupltd, ZOUCHENG 273500, china)
Pages: 39-
42,85
Year: 2000
Issue:
3
Journal: Journal of Shandong University of Science and Tech
Keyword: 高分辨层序; 海平面变动; 陆表海盆地; 鲁西煤田;
Abstract: 依据钻孔岩芯和测井资料 ,对鲁西陆表海盆地含煤地层进行了高分辨率层序地层划分 ,研究了高分辨率层序地层特点及其控制因素。研究表明 ,鲁西陆表海沉积序列中不同级次旋回相互叠加 ,具有特征的低频 (Ⅱ~Ⅲ级 )和高频 (Ⅳ~Ⅵ级 )层序叠加样式 ;这种相互叠加的旋回结构受控于相互叠置的海平面变化周期 ,即复合海平面变化。海平面变化周期表现出非对称式突发性上升到缓慢回落的节律性 ,形成了不对称的旋回记录。
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