摘要
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。
The Permo carboniferous coal measure in the Western Shandong Coalfield is an important part of Late Paleosoic epicontinental coal bearing basin of the North China.It belongs to typical paralic coaly sediment.Different order stratigraphic cycles superposed one another,showing a typical low (orders Ⅱ～Ⅲ) and high frequency(orders Ⅳ～Ⅵ) sequence stacking Pattern.Study indicates that this type of cyclicity is controled by the superposed different order sea level changes,i.e.the composite sea level changes.The periodicity of the sea level changes shows a rhythm from asymmertrical episodic rise to slow fall,which induces the asymmetry of stratigraphic cycles in the coal measure.
出处
《山东科技大学学报（自然科学版）》
CAS
2000年第3期39-42,85,共5页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学基金!资助项目 (NO .49872 0 5 7)
关键词
高分辨层序
海平面变动
陆表海盆地
鲁西煤田
hight resolution sequences
sea level change
epicontinental basin
Western Shandong Coalfield
