An approach to the transgressive sedimentary pattern of the present continental shelf |
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| Authors: | Lin Hejie Huang Xingzhen Pan Zhonghai Li Chengxian |
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| Institution: | 1. Lanzhou Institute of Geology, Academia Sinica, Qingdao, China
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| Abstract: | On the basis of our study of the present sediments in the northern part of the continental, shelf of the South China Sea, this article clarifies our views that a “three-zone pattern” is the basic feature of transgression-type sedimentation. The classification of transgression-type sedimentation of the present continental shelf is based on: the close relationships between the formation of the present continental shelf and the position of the low sea level of the Würm glacial stage, the genetic types and environmental features of sedimentary zoning, the relationship between the formation of glauconite with different maturity and the migration of coastline, the speed of tranagression, and the overlying speed of sedimentation. We put forward the genetic name of the “three-zone pattern” to denote: - The inner zone, river mouth-coastal current sedimentary area:
- The intermediate zone, coastal current-sea current scouring-sedimentary area;
- The outer zone, sea current scouring area.
All these are of significance to the study of fossil marine strata. |
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