| 广西罗城—鹿寨地区石炭系沉积相类型及沉积环境演化 |
| |
| 引用本文： | 赵明鹏,陈敏.广西罗城—鹿寨地区石炭系沉积相类型及沉积环境演化[J].地质论评,1995,41(6):517-524. |
| |
| 作者姓名： | 赵明鹏 陈敏 |
| |
| 作者单位： | 阜新矿业学院 辽宁
(赵明鹏)，阜新矿业学院 辽宁(陈敏) |
| |
| 摘 要： | 本文据区内6个石炭纪地层剖面的岩性组合,垂向层序及生物组合特征的研究,将沉积相区分为陆源碎屑潮坪沉积、三角洲沉积、浅水开阔台地和极浅水局限台地碳酸盐沉积以及半深水台盆沉积五种类型。研究表明,在石炭纪不同时期的沉积环境具有不同的组合特点。早石炭世沉积类型比较复杂,具有陆源碎屑潮坪-三角洲-开阔台地-台盆环境组合形式;而中晚石炭世则主要为极浅水局限台地环境,总体上表现出向上变浅的环境演化特点。本文指出台地向上变浅的机理是在总体浅进超覆的背景下由碳酸盐沉积物的快速沉积造成的。
|
| 关 键 词： | 沉积相 沉积环境演化 石炭纪 地层 广西 |
SEDIMENTARY FACIES TYPES AND EVOLUTION OF DEPOSITIONAL ENVIRONMENTS OF THE CARBONIFEROUS STRATA IN THE LUOCHENG-LUZHAI REGION, GUANGXI |
| |
| Zhao Mingpeng and Chen Min.SEDIMENTARY FACIES TYPES AND EVOLUTION OF DEPOSITIONAL ENVIRONMENTS OF THE CARBONIFEROUS STRATA IN THE LUOCHENG-LUZHAI REGION, GUANGXI[J].Geological Review,1995,41(6):517-524. |
| |
| Authors: | Zhao Mingpeng and Chen Min |
| |
| Abstract: | Five sedimentary facies types have been distinguished according to 6 studies of the lithologi-cal associations, fossil assemblages and vertical sequence of the rocks at 6 Carboniferous sections in the studied region. They are terrigenous clastic tidal-flat deposits, deltaic deposits, open-platform shallow-water carbonate deposits, restricted platform very shallow-water carbonate deposits and bathyal-water platform-basin deposits. The studies demonstrated that there were appreciable differences in depositional environment associations during different epochs of the Carboniferous : a clastic tidal flat-deltaic-open platform-platform basin environment association pattern may be previaled during the early stage, and a restricted very shallow-water platform environment during the middle and late stages, showing the features of shallowing-upward environmental evolution generally. The shallowing-upward mechanism is considered to be caused by rapied deposition of carbonate sediments in the general setting of progressive overlap. |
| |
| Keywords: | sedimentary f acies evolution of depositional environments Carboniferous |
| 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 |
|
