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Science in China Series D: Earth Sciences

, Volume 40, Issue 2, pp 207–214 | Cite as

Origin, development and evolutionary model of shelf desertization environment in late stage of Upper Pleistocene

  • Songling Zhao
  • Hongjun Yu
  • Jingpu Liu
Article

Abstract

Based on the study of palaeo-environmental evolution in the shelves of the Eastern China Seas, the concept of “shelf desertization” in the late stage of Upper Pleistocene is defined; the environmental background and evolutionary process of shelf desertization are analysed. Study on the records of subbottom profiling and the data of core samples from shelf areas revealed that during low sea-level stages, the sedimentary environment in the exposed shelf plains was dominated by aeolian depositional process under cold and dry climatic conditions, i.e. under the action of strong winter-monsoon winds. Parts of the exposed marine strata were disintegrated, and aeolian sand dunes were formed on the disintegrated marine deposits, from which the finer sediment grains were blown away by wind and deposited in the downwind areas to form the derivative loess deposits. Thus a desertization environmental system was formed in the exposed shelf plains of the Eastern China Seas.

Keywords

shelf desertization late stage of Upper Pleistocene dune loess 

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Copyright information

© Science in China Press 1997

Authors and Affiliations

  • Songling Zhao
    • 1
  • Hongjun Yu
    • 1
  • Jingpu Liu
    • 1
  1. 1.Institute of OceanologyChinese Academy of SciencesQingdaoChina

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