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- Title
鄂尔多斯盆地南部延长组长7段富有机质泥页岩生姪条件及沉积模式分析.
- Authors
师学耀; 高超利; 雷俊杰; 黄 闯; 安案胜; 张宇恒; 王如意; 李艳青; 王磊; 孙宁亮彳
- Abstract
TVie study on petrology, mineral composition, organic geochemistry, pore types and sedimentary model of shale from Chang 7 Member of Y anchang Formation in southern Ordos Basin shows that there are three types of mud shale in the area, including massive mudstone of muddy debris flow origin, normal-graded mudstone formed by turbidity current, and laminated mudstone deposited in lentic environment TVie former two contain numerous terrigenous clastic minerals, while the latter has high content of carbonate minerals as well as high organic carbon and soluble and pyrolysed hydrocarbon. The kerogens of the mud shale are dominated by type ]] with minus of type ]. The reservoir space of shale is mainly intergranular pore, intragranular pore and microfracturewith rare o哮anic pore. The laminated mudstones are characterized by various pore types and large reservoi" space. TVie massive mudstones formed by muddy debris flow are deposited at the slope toe of lake basin, while the norm al-graded mudstone of turbidity current origin and laminated mudstone are widely deposited in the center of lake basin with large thickness.
- Subjects
CARBONATE minerals; MUDSTONE; TURBIDITY currents; WATERSHEDS; DEBRIS avalanches; SHALE gas reservoirs
- Publication
Geology & Resources, 2023, Vol 32, Issue 1, p39
- ISSN
1671-1947
- Publication type
Article
- DOI
10.13686/j.cnki.dzyzy.2023.01.011