Acta Geographica Sinica ›› 2010, Vol. 65 ›› Issue (1): 73-81.doi: 10.11821/xb201001008

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The Development of Morpho-sediment of Quaternary in Fenhe River Graben Basins and the Neotectonic Movement

HU Xiao-meng; GUO Jia-xiu; HU Xiang-yang   

  1. Geography Department; Tourism College; Shanghai Normal University; Shanghai 200234; China
  • Received:2009-07-21 Revised:2009-09-28 Online:2010-01-25 Published:2010-01-25
  • Supported by:

    National Natural Science Foundation of China, No.40671018; Projects of Shanghai Normal University, No.DZL809; No.SK200848

Abstract:

The field work found that there existed three abrupt lake regressions in the Fenhe River Graben Basins during the middle-late Quaternary,which were consistent with the development of paleosols S8,S5 and S1.This indicates that those regressions are not the results of the dry climate but due to the neotectonic movement.The basins experienced slow transgressions when the loess-paleosols between S11-S8,S8-S5 and S5-S1 developed,and sank after S1 had formed.Based on these discoveries and previously revealed data about the activities of the upper mantle in the deep earth around this region,the paper puts forward a hypothesis that can explain how the lake transgression-regression cycles took place under the control of the neotectonic movement.The morpho-sedimentary characteristics are the results and responses of the activities of the upper mantle in the deep earth.

Key words: Fenhe River, Quaternary, lake landform, lacustrine sedimentation, lake transgression and regression

CLC Number: 

  • P931