| 湘中下石炭统测水组沉积层序及幕式聚煤作用 |
| |
| 引用本文： | 邵龙义,张鹏飞,等.湘中下石炭统测水组沉积层序及幕式聚煤作用[J].地质论评,1992,38(1):52-59. |
| |
| 作者姓名： | 邵龙义 张鹏飞 |
| |
| 作者单位： | 中国矿业大学北京研究生部，中国矿业大学北京研究生部，中国矿业大学北京研究生部，中国矿业大学北京研究生部 |
| |
| 摘 要： | 下石炭统测水组是我国南方主要含煤地层之一，煤系及煤层在湘中地区发育最佳，该区测水组形成于碎屑滨岸障壁－泻湖沉积体系中。文中对测水组沉积层序及其所反映的海平面变化历史进行了分析，提出测水组上段底部砂岩是海侵背景下形成的障壁砂坝或障璧岛，其底部侵蚀面是海侵冲刷面（ravinement surface)。同时提出测水组下段三、五煤层的形成与受海平面变化控制的幕式聚煤作用（episodie coal accumulation)有关，后者系指海平面下降阶段横跨不同相区的区域性聚煤作用。
|
| 关 键 词： | 测水组 沉积层序 海平面变化 聚煤作用 下石炭统 沉积模式 |
THE LOWER CARBONIFEROUS CESHUI FORMATION IN CENTRAL HUNAN,SOUTH CHINA:DEPOSITIONAL SEQUENCES AND EPISODIC COAL ACCUMULATION |
| |
| Shao Longyi,Zhang Pengfei,Liu Qinfu,Zheng Maojie Beijing Graduate School,China University of Mining and Technology,Beijing.THE LOWER CARBONIFEROUS CESHUI FORMATION IN CENTRAL HUNAN,SOUTH CHINA:DEPOSITIONAL SEQUENCES AND EPISODIC COAL ACCUMULATION[J].Geological Review,1992,38(1):52-59. |
| |
| Authors: | Shao Longyi Zhang Pengfei Liu Qinfu Zheng Maojie Beijing Graduate School China University of Mining and Technology Beijing |
| |
| Abstract: | The Ceshui Formation(C_1) is one of the major coal-bearing strata in SouthChina, and developed well in central Hunan. Researches in central Hunan showthat the Ceshui Fornation formed in a clastic shoreline barrier-lagoonal deposi-tional systein, which includes the tidal flat, lagoon, barrier sand bar, offshore muddyshelf and offshore carbonate shelf environments. The coal--forming seams developedfrom the lagoon and tidal flat environments of this system. The coal accumulation and the formation of coal measures were also control-led by the sea--level changes (most probably sea--level changes controlled by gla--ciers). The formation of coal seam Nos. 3 and 5 in the area is related to the "epi-sodic" coal accumulation coutrolled by sea-level changes. The episodic coal accu-mulation refers to the regional coal accumulation that occurred across differentfacies areas during the stage (phase) of sea-level fall. The large-scale coal accu-mulation for the Ceshui Formation ended with the regional sea-level rise repre-sented by basal sandstone of the Upper Member, and the ultimate cease of thecoal accumulation was due to drying and warming of the climate. |
| |
| Keywords: | Ceshui Formation depositional sequences coal accumulation |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《地质论评》浏览原始摘要信息 |
| 点击此处可从《地质论评》下载免费的PDF全文 |
