摘要
晚二叠世龙潭组沉积期是湖北省境内一次重要的成煤时期,由于煤层的不稳定性,其煤层层数、厚度、煤质等存在明显差异。通过岩性、煤层及古生物研究对比,查明龙潭组由下向上共出现5个煤层,煤层的形成与沉积特征明显受岩相古地理条件所制约。在龙潭组沉积期,湖北省境内总体为"两陆夹一盆"的基本格局,形成潮坪-泻湖-障壁岛沉积体系,该沉积体系是华南海北部沉积区的一个组成部分,由秦淮古陆、海湾泻湖及江南古陆组成,沉积区主要为泻湖相和潮坪相单元,其中沼泽亚相为煤层的最佳沉积环境。
Longtan Group of Permian is most important coal-forming phase. The unstable coal form, the quantity, the thickness and quality in this group have obvious difference. By comparing lithology, coal form and lithofacies, Longtan Group exist five coalbeds controlled by lithofacies paleogeography. There were two lands and one basin in Hubei Province. Depositional model of lithofacies geographical evoluted form tidal flat to lagoon and barrier island. This deposition system is one of part in the north of South China Sea, its sediment composing of tidal flat and lagoon. Marsh subfacies are best sedimentary environment for coal forming.
出处
《地质科技情报》
CAS
CSCD
北大核心
2012年第4期50-54,共5页
Geological Science and Technology Information
基金
中国地质调查局煤炭资源潜力评价项目(1212010881621)
关键词
成煤规律
岩相古地理
龙潭组沉积期
晚二叠世
湖北省
metallogenic regularity of coal
lithofacies paleogeography
depositional phase of Longtan
Late Permian
Hubei Province
