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[1]ZHANG Bin,WANG Ping,WANG Jian-cun.Discussion of the Origin of the Soft-sediment Deformation Structures in Paleo-dammed Lake Sediments in the Upper Reaches of the Minjiang River[J].Journal of Seismological Research,2011,34(01):0-.

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Discussion of the Origin of the Soft-sediment Deformation Structures in Paleo-dammed Lake Sediments in the Upper Reaches of the Minjiang River

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 34 Number of periods: 2011 01 Page number: 0- Column: Public date: 2011-03-09

Title:: Discussion of the Origin of the Soft-sediment Deformation Structures in Paleo-dammed Lake Sediments in the Upper Reaches of the Minjiang River

Author(s):: ZHANG Bin¹; 2; WANG Ping¹; WANG Jian-cun¹; 2; (1.State Key Laboratory of Earthquake Dynamics,Institute of Geology,CEA,Beijing 100029,China)(2.School of the Earth Sciences and Resource,China University of Geosciences,Beijing 100083,China)

Keywords:: soft-sediment deformation; seismites; paleo-earthquake; dammed lake; Minjiang River

CLC:: P512.2

DOI:: -

Abstract:: Paleo-dammed lake sediments in the upper reaches of the Minjiang River and its tributaries show several types of deformational structures that are interpreted as seismites.In this paper,we analyze the types and characteristics of these deformation.We classify the structures into two types:the small-scale deformations,which are related to the plastic deformation,liquefaction and fluidization processes of the soft sediment.Another is the large-scale folds formed by the disturbance of the collapse masses(slip block).The comparison with other soft-sediment deformation structures and study of the seismotectonic environment indicate that the main trigger factors for deformation were seismic shocks,collapse and landslide induced by the earthquake.

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Last Update: 2011-03-30