西湖凹陷南部古近纪花港组沉积环境及聚煤规律研究  

Research on Depositional Environment and Coal-accumulation of Paleogene Huagang Formation in Southern Xihu Depression

作　　者：彭迎迎 周倩羽 PENG Yingying;ZHOU Qianyu(School of Earth Science and Engineering,Hebei University of Engineering,Handan 056000,China)

机构地区：[1]河北工程大学地球科学与工程学院,河北邯郸056000

出　　处：《煤炭技术》2022年第6期67-70,共4页Coal Technology

基　　金：河北省高等学校科学技术研究项目(QN2019168);河北省自然科学基金资助项目(D2021402043)。

摘　　要：为得出西湖凹陷南部古近纪花港组的聚煤规律,通过岩心和测井等资料,研究沉积环境及聚煤规律。研究区花港组分为上、下2段,研究区含煤地层主要发育曲流河三角洲、辫状河三角洲、湖泊3种沉积相。主要聚煤环境为曲流河下三角洲平原分流间湾沼泽、辫状河下三角洲平原越岸沉积沼泽和滨湖泥炭沼泽。花港组煤层厚度从研究区中部向四周逐渐减薄。In order to obtain the coal accumulation of Paleogene Huagang formation in the south of Xihu depression, the sedimentary environment and coal accumulation are studied through cores and logging data. The Huagang formation in the study area is divided into upper and lower members. The coal bearing strata in the study area are mainly developing three sedimentary facies: meandering river delta, braided river delta and lacustrine.The main coal-accumulating environments are interdistributary bay marshes in meandering river delta plain, cross-bank sedimentary marshes in braided river delta plain and lakeshore peat swamp.The thickness of coal seam in Huagang formation gradually decreases from the middle to the periphery of the study area.

关 键 词：西湖凹陷 花港组 沉积环境 聚煤规律 

分 类 号：P618.11[天文地球—矿床学]