摘要
以勘查资料为基础,结合已有研究成果,从岩性特征、沉积构造、古生物特征、岩相特征及沉积环境演化等方面对恩施州吴家坪煤系含煤地层沉积环境、聚煤作用进行分析,认为吴家坪煤系的垂向相序总体上是由海侵型退积序列组成的,沉积环境主要有障壁岛-潟湖潮坪和广海潮坪两种类型,分别形成区域内主采的三煤和五煤;受古构造、古地形、沉积环境的影响,富煤带总体上呈北西向展布,从南西至北东,分别形成利川西南-咸丰西南-来凤西南、鹤峰中北部-利川西北部齐岳山及建始东北部至巴东中部三个条带。
Based on exploration data and available research findings,analyzed Wujiaping coal measures sedimentary environment,coal accumulation in the Enshi Prefecture from aspects of lithologic features,sedimentary structures,paleontologic features,lithofacies features and sedimentary environment evolution,considered that the vertical facies sequences were formed by transgressive retrogradation sequences as a whole.Sedimentary environment has barrier island-lagoon tidal flat and open sea tidal flat two types,and formed main mineable Nos.3 and 5 coal seams in the area respectively.Impacts from paleostructure,paleotopography,sedimentary environment,the coal-rich zones have presented as NW trending from westsouth to eastnorth and formed 3 belts which are respectively southwest Lichuan-southwest Xianfeng-southwest Lanfeng,north-cemtral Hefeng-qiyueshan of northwest Lichuan and northeast Jianshi to central Badong.
出处
《中国煤炭地质》
2012年第4期6-9,共4页
Coal Geology of China
基金
湖北省恩施州煤炭资源远景调查(1212010913012)
关键词
吴家坪煤系
沉积环境
聚煤规律
湖北恩施州
Wujiaping coal measures
sedimentary environment
coal-accumulation pattern
Enshi Prefecture
Hubei province
