摘要
庆阳沙井子矿区蕴藏煤炭资源量50余亿吨,资源赋存条件优越,根据对本区地质构造特征、地层分布及岩相组合变化特征分析,在印支运动之后至燕山中期,地壳不均衡缓慢沉降控制着侏罗系沉积的全过程,在岩性和岩相组合上形成了多旋迴结构的延安组含煤岩系及资源量丰富的多层可采煤层。
The Shajingzi mining area in Qingyang contains more than 5 billion tons of coal resources with superior resource occurrence conditions.According to the analysis of the characteristics of geological structure,stratigraphic distribution and lithofacies assemblage in this area,from the Indosinian movement to the Middle Yanshan period,the crust unbalanced slow subsidence controls the whole process of Jurassic sedimentation,and the coal-bearing series of Yan'an formation with polycyclic structure and multi-layer exploitable coal seams with rich resources are formed in the combination of lithology and lithofacies.
作者
李奇峰
Li Qifeng(The 146th Team of Gansu Coal Geology Bureau,Gansu Pingliang 744000)
出处
《山东煤炭科技》
2023年第2期173-175,共3页
Shandong Coal Science and Technology
关键词
地质构造特征
成煤环境
庆阳沙井子矿区
characteristics of geological structure
coal-forming environment
Qingyang Shajingzi mining area
作者简介
李奇峰(1974-),男,甘肃西和人,1998年毕业于西安科技大学水文地质及工程地质专业,本科,高级工程师,从事水文地质、工程地质、煤田地质勘查等工作。
