Influence of Lake Level Fluctuation on Sandbody Shapes at Shallow—Water Delta Front
- Received Date: 1997-05-06
- Rev Recd Date: 1997-09-24
- Publish Date: 1998-08-10
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Key words:
- lake level fluctuation /
- shallow-water delta /
- subaqueous dis trbutary channel /
- sheet lization of sandbodies
Abstract: At the geologic setting of shallow-water delta.distributary channels on plain palin can stretch into lake very long distance by sediment filling and the lake level frequent fluctuation.developping obvious subaqueous channel at wide shallow water delta front.At the same time,the lake level fluctuation,hydrodynamics,suchas channel,wave and offshore current,will change the distribution of sedimentary materials,and results in delta front sandbodies sheetlization,which mainly occurs in the subaqueous channel sandbodies.Along with the climate become more moist,the frequence and range of lake level fluctuation is also smaller,and the hydrodynamics reworks the distribution of sedimentary materials on delta front and sandbody sheetliation become weaker at the same time.
Citation: | Lou Zhanghua, Lu Qingmei, Cai Xiyuan, Dong Baiwan, Zhang Liqing. Influence of Lake Level Fluctuation on Sandbody Shapes at Shallow—Water Delta Front[J]. Acta Sedimentologica Sinica, 1998, 16(4): 27-31. |