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1. The cap rocks are lacustrine mudstone and gypsiferous.

2. The mudstone reservoir was formed in lacustrine facies of lamellar marl in the deep water or semi-deep water sediment with tensional state.

3. By contrastdark lacustrine mudstones on the southern Altyn tagh are moderate source rocks with hydrocarbon - generation potential.

4. Eocene through lower Oligocene lacustrine shales and Oligocene through lower Miocene lacustrine and deltaic coaly shales are the mature source rocks.

5. Un - compensating lacustrine deposition, which is multi - resources, is dominated in the depression.

6. This paper describes that the lacustrine carbonate of lower Tertiary Sha- hejie Formation in Bohai Bay is mostly terrigenous elastics-carbonate mixture rock.

7. The main sedimentary facies in this area include lacustrine facies and gravity flow facies.

8. Lacustrine source rocks provided resource for the oil and gas generation, and flood plain facies and paludal facies mudstone supplied cap rock for the reservoir accumulation.

9. Moreover, the lacustrine gypsum deposits indicate that the climate had been changed into colder and drier.

10. While shore shallow lacustrine consists of mudflats and bank bars.

11. Ma, and lakes and top lacustrine deposits of Wudaoliang Group became base surface for erosion and peneplanation since Late Miocene, which formed planation surface or peneplain of the Tibetan Plateau.

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12. The result of the laboratory analysis of the lacustrine chemical sediment samples from Dongdagou in the Datong Basin shows that the chemical matter is a hydromagnesite.

13. But the reservoirs of coastwise bar, lacustrine bay sandstone and shore sand occur in each tract.

14. A weathering - denuding surface separates the lacustrine strata and layer of the loess in the Tuoketuo mesa.

15. And every lithological member is composed of the lower gypsiferous salt bed and the upper terrigenous clastic rock, which belongs to the lacustrine sediment.

16. Zaoquan mining district of Lingwu coalfield is located in the west margin of Ordos Basin. Yan'an Formation coal bearing measures formed in environment of lacustrine delta system.

17. We propose that As anomalism in groundwater possibly resulted from the combined effects of organic matter-enriched lacustrine sediments, geological setting and topographical characteristics.

18. Continuous existence of accommodation space led to well - developed lacustrine transgressive system tracts ( LTST ).

19. Functional relationship exists among carbon and oxygen isotopes of lacustrine deposits , elevation and mean annual temperature in the Tibetan Plateau.

20. They indicate that the early charged oils are derived from the pre-Jurassic lacustrine mudstones and the later charged oils are from the Jurassic coal-bearing strata or coals.

21. Yingen - Ejinaqi Basin is a Mesozoic and Cenozoic lacustrine fault basin, and pre - Mesozoic constitutes its basement.

22. It was observed that the TSF intensity of the oils increases with aromatic concentration, and the oils from paludal facies have higher TSF intensity than that of the lacustrine oils.

23. The Jidong Basin, bounded by the Dunhua - Mishan Fault , was a Neogene lacustrine coal - bearing basin.

24. It is found that the relative abundances of dibenzofuran series are higher in the coal samples, but lower in the lacustrine mudstone samples.

25. The Dongting Lake wetland is one of the largest lacustrine wetland eco - system in China.

26. Based on analyses of sedimentary characteristics, the paper is lonsidered that fan delta is a typical set of retrograding ingression lacustrine sequence.

27. In the south of the Basin , the quaternary sediment is major in lacustrine facies, and the north is major in alluvial-diluvial.