DISTRIBUTION OF FORAMINIFERA IN SURFACE SEDIMENTS OF THE HANGZHOU BAY AND ITS ENVIRONMENTAL IMPLICATION

LI Xiaoyan; SHI Xuefa; CHENG Zhenbo; ZHU Zhiwei; WU Yonghua; SHI Fengdeng

doi:10.3724/SP.J.1140.2015.01121

Marine Geology & Quaternary Geology > 2015 > 35(1): 121-127. > DOI: 10.3724/SP.J.1140.2015.01121

LI Xiaoyan, SHI Xuefa, CHENG Zhenbo, ZHU Zhiwei, WU Yonghua, SHI Fengdeng. DISTRIBUTION OF FORAMINIFERA IN SURFACE SEDIMENTS OF THE HANGZHOU BAY AND ITS ENVIRONMENTAL IMPLICATION[J]. Marine Geology & Quaternary Geology, 2015, 35(1): 121-127. DOI: 10.3724/SP.J.1140.2015.01121

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DISTRIBUTION OF FORAMINIFERA IN SURFACE SEDIMENTS OF THE HANGZHOU BAY AND ITS ENVIRONMENTAL IMPLICATION

1. Laboratory of Marine Sedimentology and Environmental Geology, SOA, Qingdao 266061, China;

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Received Date: March 09, 2014
Revised Date: April 04, 2014

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Abstract

A total of 239 surface sediment samples from the Hangzhou Bay were quantitatively analyzed for foraminifera. 71 benthic foraminifera species and 6 planktonic foraminifera species have been found in these samples. The results show that foraminifera abundance in the surface sediments of Hangzhou Bay is low and the maximum only 41/g dry sample. Benthic foraminifera dominate the sample and planktonic foraminifera are rare. The foraminifera, dominated by euryhalinous and eurytopic species, are mainly re-transported allochthonous small species, such as Ammonia beccarii,Ammonia annectens,Quinqueloculia lamarckiana,Elphidium advenum,Spiroloculina communis,Pararotalia nipponica,Poroeponides lateralis. According to the distribution pattern of dominant benthic foraminifera, two assemblages recognized.
- benthic foraminifera,
- surface sediments,
- marine environment,
- Hangzhou Bay

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References

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DISTRIBUTION OF FORAMINIFERA IN SURFACE SEDIMENTS OF THE HANGZHOU BAY AND ITS ENVIRONMENTAL IMPLICATION