Full
HE Youbin,born in 1964,is a professor in School of Geosciences,Yangtze University. He is mainly engaged in palaeogeography and sedimentology. E-mail: heyb122@163.com.
Outline
Based on a systematic review of the evolution from macroscopic qualitative description to high-precision quantitative analysis of the Permian lithofacies palaeogeography in southern China,this study focuses on the rock evolution characteristics and formation mechanisms centered on the dolomite of the Qixia Formation-Maokou Formation and the siliceous rocks of the Gufeng Formation、Dalong Formation. The study emphasizes that the spatiotemporal distribution of lithofacies profoundly reflects the control of tectonics,especially the dynamic background driven by scissor-like collision and the distal effect of mantle plumes,which determine the spatiotemporal evolution of the sedimentary pattern and the characteristics of the platform-basin differentiation. In response to the current bottleneck problem in the delimitation of facies belts,this study proposes that the spatiotemporal constraints should be strengthened by relying on palaeobiogeographic similarity indicators,and combined with big data and artificial intelligence technologies,to promote the transformation from static map drawing to dynamic process prediction,aiming to provide more rigorous petrological evidence and evolution models for the evaluation of “sweet spots” in unconventional oil and gas exploration.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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