摘要
运用沉积学、古生物地层学、层序地层学等方法对福建龙永煤田童子岩组地层及其内主要煤层的沉积特征进行了详细的研究。结果表明童子岩组是一套海陆交互相的沉积,其沉积序列共分为三个沉积旋回,每个旋回都是以海侵开始,以海退结束,每一旋回缓慢海退背景都是由一系列的次级快速海进或海退事件构成。由于不断受到海陆两方面的影响,形成童子岩组中煤层的泥炭沼泽发育呈现出波动式特征,由此导致泥炭沼泽类型呈跳跃式演化,构成了包括碎屑滨岸、障壁岛—潟湖、泥炭坪、潮坪、潮汐三角洲和河控三角洲等沉积相在内的复杂沉积体系。
By using different kinds of data from sedimentology, biatomic and sequence stratigraphy and coal geology, sedimentary characteristics of the Tongziyan Formation and its evolutionary history are studied. The result indicated that the Tongziyan Formation are deposited in a marine-shore environment. Its sedimentary sequence can be divided into three cycles, while each cycle starts with a rapid ingression and ends in a slow regression process due to a series of secondary fast transgression or regression events. Under the internatively influence of tidal and fluvial systems,the peat formation environments of Tongziyan Formation fluctuated constantly from fluvial to tidal flat. The sedimentary facies of the Tongziyan Formation include sea shore, island-lagoon,peat, tidal flat, tide or river controlled delta, which constitute a complex delta deposition system.
出处
《地质科学》
CAS
CSCD
北大核心
2010年第1期324-332,共9页
Chinese Journal of Geology(Scientia Geologica Sinica)
基金
国家重点基础研究发展计划"973"项月(编号:2006CB202202)
国家自然科学基金项目(编号:40772095
40972106)
福建省自然科学基金项目(编号:2008J0244)资助
关键词
沉积环境
童子岩组
沉积特征
龙永煤田
顶峰山井田
Depositional environment,Tongziyan Formation,Sedimentary characteristic, Longyong coalfield, Dinfengshan coal mine
