石油实验地质2019，Vol.41Issue(1)：38-44,7.DOI:10.11781/sysydz201901038
贵州南部晚石炭世沉积环境与古地理特征
Petrological characteristics and sedimentary environment in the southern Guizhou during the Late Carboniferous
摘要
Abstract
The sedimentary environment changed frequently from carbonate terraces to basin in the Late Carboniferous in the south part of Guizhou. There were two lithologic combinations at the same time, namely the Nandan Formation (black limestones and siliceous shale limestones) and the Weining Formation (light gray limestones and dolomites). However, the sedimentary environment boundary and transitional characteristics between the two formations are not clear yet. The changes and transition characteristics of sedimentary facies in the southern Guizhou were analyzed based on previous research and the analysis of three typical wells, and combined with sedimentary sequence characteristics and rock combination characteristics. It was found that in the Late Carboniferous, the southern part of Guizhou experienced a retreat from basin facies to carbonate terraces facies, and there was a certain intersection and transition between various facies. A retreat process took place in the south-west direction. The appearance of the Weining Formation in the south indicated the shallowing of seawater and the closure of a rift trough.关键词
碳酸盐岩/沉积环境/南丹组/威宁组/贵州南部Key words
carbonate/sedimentary environment/Nandan Formation/Weining Formation/south of Guizhou Province分类
能源科技引用本文复制引用
苑坤,陈榕,林拓,方欣欣,覃英伦,王超,周志,孙相灿..贵州南部晚石炭世沉积环境与古地理特征[J].石油实验地质,2019,41(1):38-44,7.基金项目
国家科技重大专项"不同类型页岩气生成机理与富集规律研究"(2016ZX05034-001) （2016ZX05034-001）
中国地质调查局项目"滇黔桂上古生界页岩气战略选区调查"(DD20160196)资助 （DD20160196）
