SEDIMENTATION RATE OF MUD AREA IN THE EAST CHINA SEA INNER CONTINENTAL SHELF

LIU Shengfa; SHI Xuefa; LIU Yanguang; ZHU Aimei; YANG Gang

doi:10.3724/SP.J.1140.2009.06001

Marine Geology & Quaternary Geology > 2009 > 29(6): 1-7. > DOI: 10.3724/SP.J.1140.2009.06001

LIU Shengfa, SHI Xuefa, LIU Yanguang, ZHU Aimei, YANG Gang. SEDIMENTATION RATE OF MUD AREA IN THE EAST CHINA SEA INNER CONTINENTAL SHELF[J]. Marine Geology & Quaternary Geology, 2009, 29(6): 1-7. DOI: 10.3724/SP.J.1140.2009.06001

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SEDIMENTATION RATE OF MUD AREA IN THE EAST CHINA SEA INNER CONTINENTAL SHELF

First Institute of Oceanography, SOA, Qingdao 266061, China;Key Lab of Marine Sedimentology and Environmental Geology, SOA, Qingdao 266061, China

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Received Date: June 08, 2009
Revised Date: August 09, 2009

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Abstract

Abstract

Seven gravity sediment cores were collected from muddy area of inner continental shelf of the East China Sea. Measurement of ²¹⁰Pb activity was performed on all cores. The results demonstrate that the sedimentation rates were between 0.79 and 3.66 cm/a, with 1.97 cm/a on average. The highest sedimentation rate was recognized in core CJ12-11, located in the high sedimentation rate area of East China Sea. Six other cores with relative low sedimentation rates were located in the sub-higher sedimentation rate area. Distribution of ²¹⁰Pb activity in surface sediments is correlated closely with the types of sediments, and probably controlled by the clay mineral, but shows a positive correlation with suspended matter concentration. Furthermore, these results reveal relative stable sedimentation processes in the muddy area during the past 100 years and the northward expansion of this muddy area.
- sedimentation rate,
- ²¹⁰Pb dating,
- muddy area,
- the East China Sea inner continental shelf

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References

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SEDIMENTATION RATE OF MUD AREA IN THE EAST CHINA SEA INNER CONTINENTAL SHELF