Depositional Models on the Steep Slope of Paleogene,Jiyang Sub-basin
- Received Date: 1999-09-06
- Rev Recd Date: 2000-10-08
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Key words:
- Jiyang sub-basin /
- faulted-depression /
- depositional models of steep slope /
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Abstract: The tectonic movement of Jivang Suh-basin in Earlv TerLiarv is mainly characterized by faulting-depressing. The deposiLional svstem, which were dominated by proximal gravity flow is developed along the steep slope of Jivang Suh-hasin, and its development and distribution are controlled by the types of steep slopes.In Lhis paper based on Lhe depositional characterisLics, depositional models of sleep slope sedimentation are concluded as 3 Lypes-sLeep slope on Lhe depositional eroded faulL, slope model interim steep slope and continuous steep slope.The common deposiLional characteristics on sleep slopes are LhaL Lhe nearshore suhaqueous fan is widely developed and it's developed degree has close relation to the fault throw and active time.The deposltlonal types on stpep siopes ace contcolled by the activities and developlng characheteristics of faultsn and different deposiLional types have developed in different deposition systems and vertical evolution successions.The evolution law of deposition on steep slope is that: alluvial fan→fandelta→delta, nearshore suhaqueous fan→suhlacusLrine fan.
Citation: | ZHANG Shan wen, SUI Feng gui, WANG Yong shi. Depositional Models on the Steep Slope of Paleogene,Jiyang Sub-basin[J]. Acta Sedimentologica Sinica, 2001, 19(2): 219-223. |