首页|Storm Liquefaction Deposits:A Possibility of Time Reversal in Sedimentary Strata of an Estuarial Coastal Area

Storm Liquefaction Deposits:A Possibility of Time Reversal in Sedimentary Strata of an Estuarial Coastal Area

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In the sedimentary strata dating of estuarial coastal areas,it is often found that there is phenomenon of time-reversal in strata.The seabed sediments could be liquefied under storm waves.A laboratory wave flume experiment demonstrated that storm-in-duced liquefaction deposits are formed by the oscillations of liquefied sediments.In this paper,the particle size distribution and 210Pbex specific activity of the sediment samples from the liquefaction disturbed zone and adjacent stable zone of the Yellow River Delta were tested.The stratigraphic divisions based on storm liquefaction deposit sequence can effectively explain the vertical changes in par-ticle size and 210Pbex specific activity.Due to the differentiation of particles during the storm induced liquefaction,coarse and fine particles regrouped,which could explain the phenomenon of time-reversal in dating data.

210Pbex specific activityliquefaction depositionreversalsediment

XU Guohui、REN Yupeng、HU Guanghai、LIU Zhiqin、SUN Yongfu、LIN Lin

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Key Laboratory of Marine Environment and Ecology,Ministry of Education,Ocean University of China,Qingdao 266100,China

Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering,Ocean University of China,Qingdao 266100,China

Key Laboratory of Submarine Geosciences and Prospecting Techniques,Ministry of Education,Ocean University of China,Qingdao 266100,China

First Institute of Oceanography,Ministry of Natural Resource,Qingdao 266061,China

National Deep Sea Center,Qingdao 266237,China

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National Natural Science Foundation of China

41976049

2024

中国海洋大学学报(自然科学英文版)
中国海洋大学

中国海洋大学学报(自然科学英文版)

CSTPCD
影响因子:0.268
ISSN:1672-5182
年,卷(期):2024.23(4)
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