陶和矿区西山窑组层序地层学与聚煤规律研究  

Sequence stratigraphy and coal accumulation of Xishanyao Formation in Taohe mining area

作　　者：刘洪胜 陈志强 LIU Hongsheng;CHEN Zhiqiang(Shandong Provincial No.1 Institute of Geo-mineral Exploration,Jinan 250100,Shandong,China)

机构地区：[1]山东省第一地质矿产勘查院,山东济南250100

出　　处：《自然资源情报》2022年第4期33-40,共8页Natural Resources Information

摘　　要：通过系统分析陶和矿区钻井岩芯描述、测井及勘探成果资料,研究了中侏罗统西山窑组沉积环境、煤层发育和空间展布特征;将西山窑组含煤地层利用层序地层学方法划分为2个三级层序、20个准层序,构建了西山窑组层序地层格架;识别出三角洲相及其2个亚相、7个微相。认为矿区沉积物源包括E、W两个方向;短期旋回的下降半旋回底部及上升半旋回顶部易于形成厚煤层,且主采煤层厚度由SW向NE呈规律性变化。The sedimentary environment,coal seam development and spatial distribution characteristics of Middle Jurassic Xishanyao Formation are studied through the systematic analysis of core description,logging and exploration data in Taohe mining area.2 third-order sequences and 20 parasequences are divided from the coal-bearing strata of Xishanyao Formation based on the study of sequence stratigraphy.Meanwhile,the sequence stratigraphic framework is also constructed here.Delta facies,which include 2 subfacie and 7 microfacies,are identifi ed in Xishanyao Formation.This study fi nds that the sediment sources in this mining area are from both E and W direction.The thick coal seam is easy to be formed at the bottom of the descending semi-cycle and the top of the ascending semi-cycle of the short-term cycle.The thickness of the main coal seams presents regular changes from SW to NE.

关 键 词：陶和矿区 西山窑组 层序地层 准层序 聚煤规律 

分 类 号：P618.11[天文地球—矿床学]