CHENG Zhen bo, LIU Zhen xia, SHI Xue fa, JU Xiao hua, SERGE Berne, Y.Saito. Paleoceanographic Characteristics of Microfossils, δ18O Curve and AMS14C Dating in the Core DGKS96-03 from the East China Sea[J]. Acta Sedimentologica Sinica, 2000, 18(4): 501-505.
| Citation:
|
CHENG Zhen bo, LIU Zhen xia, SHI Xue fa, JU Xiao hua, SERGE Berne, Y.Saito. Paleoceanographic Characteristics of Microfossils, δ18O Curve and AMS14C Dating in the Core DGKS96-03 from the East China Sea[J]. Acta Sedimentologica Sinica, 2000, 18(4): 501-505.
|
Paleoceanographic Characteristics of Microfossils, δ18O Curve and AMS14C Dating in the Core DGKS96-03 from the East China Sea
- 1.
First Institute of Oceanography,SOA,Qingdao Shandong 266003;
- 2.
Labo Environments Sedimentaies,Centre de Brest,IFREMER,France
- Received Date: 1999-12-14
- Rev Recd Date:
2000-05-03
- Publish Date:
2000-08-10
-
Abstract
Previous research interests are focused on the study of microfossils in the continental shelf and the Okinawa Trough of the East China Sea. In this paper, the sedimentary characteristics of different geological stage, paleoceanographic feature and sedimentary age are recognized through the analysis of microfossils and by means of δ18O curve and AMS14C dating. We use one of the 17 cores that the scientists from China,France and Korean obtained on the French vessel L＇ATALANTE in the continental shelf of the East China Sea in 1996. Grain sizes,minerals, CaCO3,microfossils,δ18o and AMS14C age are analysed and measured. The primary result is that 7 cool climatic stages are found according to the abundance change of cool water species and warm water species in microfossils. After that, the sedimentary stages are established in terms of mineralogical composition, carbonate content, granulometric composition, and AMS14C dating. They are 1)deposition of early Yumu glacial in the Late Pleistocene Epoch; 2)deposition of sub-interglacial epoch in Yumu; 3)deposition of Yumu glacial epoch in the Late Pleistocene; 4) deposition of post glacial in Holocene epoch. The result of AMS14C dating with the shells of planktonic foraminifera in the different sedimentary stage are as follows: 9 690 a B. P, 12 980 a B. P,26 350 a B. P,27 960 a B. P,37 410 a B. P,41 260 a BP.
-
References
|
[1]
|
秦蕴珊等主编.东海地质[M]北京：科学出版社,1987 |
|
[2]
|
Wang Pinxian, Min Qiubao, Bian Yunhua et al. On micropaleontology and stratigraphy of Quaternary marine transgression in east China. Marine Micropaleontology of China[M]. Beijing China Ocean Press, 1985. 265 ～ 284 |
|
[3]
|
地质矿产部海洋地质调查局.冲绳海槽地貌及沉积物研究[R].海洋地质专刊,1985,(1)：78～100 |
|
[4]
|
Li Tiegang, Liu Zhenxia, Yoshi Saito et al. Correlation between the Okinawa Trough and Greeland ice climate records of the past 5000a. In: Liu Zhenxia, Serge Berne, eds. Asia Marine Geology, paleoenviroments and Sedimentation of the East China Sea. SOA China Beijin 1999.63～ 74 |
|
[5]
|
苍树溪,秦蕴珊,闫军.冲绳海槽15万年以来古气候初步研究,218 项专集[C].北京：海洋出版社,1989,68～73 |
|
[6]
|
Wang Rujian,Jian Zhimin. Pale0ceanographic implication of radiolaria in the southern Okinawa Trough over the last 20000 years[J]. Science in China (Series D), 1998, 41 (1):21 ～ 27 |
|
[7]
|
程振波,鞠小华.冲绳海槽中部表层沉积物中的放射虫[j].海洋与湖沼,1998,29(6)：656～662 |
|
[8]
|
程振波,王永吉,鞠小华.冲绳海槽96、155号岩心放射虫与年代地层及古气候特征[J].海洋学报,1998.20(1):74～80 |
|
[9]
|
Martinson D G, Pisias W G,Hays J D, et al. Age dating and the orbital theory of the ice age: Development of a high resolution O to 300,000 year Chronostratigraphy[J]. Quaternary Research, 1987,27:1 ～ 29 |
-
-
Proportional views
-
DownLoad: