The Origin and Evolution of Slope Break Belt and Its Effect on Stratigraphy Distr ibution in Large Down-warped Lake Basin
- Received Date: 2004-10-14
- Rev Recd Date: 2004-12-21
- Publish Date: 2005-09-10
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Key words:
- down warped lake basin /
- Songliao Basin /
- slope break belt /
- sequence stratigraphy /
- the fourth segment of Quantou-Yaojia Formation /
Abstract: The slope belt developped in large-type down-warped lake basin is similar to the slope in the marine basin.The Songliao Basin can be identified as two slope belts, and this paper analyzes the origin and evolution of slope belt and its effect on sediment system and stratigraphy distribution. The two slope belts are all influenced by the fault during the early periods. With the development of slope belt Taobao-Shuangang high water level slope is controlled by the direction of provenance and erosion, but the sediment supply and the differential compaction are main controlling factors in the development of Honggang-Haituozi low water level slope. The evolvement of the sediment system is controlled by the Taobao-Shuangang high water level slope and groove, but the Honggang-Haituozi low water level slope controls the range of lower system tract.
Citation: | WANG Ying, WANG Ying-min, WANG Xiao-zhou, XIN Ren-chen, ZHAO Zhi-kui, ZHAO Zhan-yin. The Origin and Evolution of Slope Break Belt and Its Effect on Stratigraphy Distr ibution in Large Down-warped Lake Basin[J]. Acta Sedimentologica Sinica, 2005, 23(3): 498-506. |