LIU Hao, WANG Ying min, WANG Yuan, QI Xue feng, DU She kuan. Study on Slope Breaks in Large Down Warped Lake Basins and Its Significance——A case study from Jurassic lake in northwestern Junggar Basin[J]. Acta Sedimentologica Sinica, 2004, 22(1): 95-102.
| Citation:
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LIU Hao, WANG Ying min, WANG Yuan, QI Xue feng, DU She kuan. Study on Slope Breaks in Large Down Warped Lake Basins and Its Significance——A case study from Jurassic lake in northwestern Junggar Basin[J]. Acta Sedimentologica Sinica, 2004, 22(1): 95-102.
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Study on Slope Breaks in Large Down Warped Lake Basins and Its Significance——A case study from Jurassic lake in northwestern Junggar Basin
- 1.
Basin & Oil Research Center, University of Petroleum, Beijing 102249;
- 2.
Key Laboratory for Hydrocarbon Accumulation, Ministry of Education, Beijing 102249;
- 3.
Exploration and Exploitation Institute of Xinjiang Petroleum Company, Urumqi 834000
- Received Date: 2003-03-12
- Rev Recd Date:
2003-06-09
- Publish Date:
2004-03-10
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Abstract
The slope breaks are developed widespread in Jurassic large down warped lake basin, the Northwestern Area, Junggar Basin. Their genetic types can be divided into fracture slope break, bending slope break, sedimentary slope break and erosional slope break. For their showing mutual grades characteristics along source area direction, they also can be divided into basin margin slope break and inner basin slope break according to their natural geographical positions.The genetic mechanism of the slope breaks includes deep seated thrust structure, inherited paleohigh and interior basin secondary fault,etc., and the scale of slope breaks intimately relates with the size and the period of tectogenesis. Because of the variance of tectonic activity in different period and district range, the slope breaks formed by tectonic have multi period, episode, differential motion, inherited and invert characteristics. The slope breaks obviously control the stratigraphic overlap, the longitudinal lithologic combination and the longitudinal and lateral distribution of depositional systems. So, we establish a reasonable pattern that the slope breaks control nonstructural traps and guide the regional exploration of nonstructural traps, which has the significance to further prospect for large scale nonstructural traps and traps group.
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