DISTRIBUTION OF CALCAREOUS NANNOFOSSILS IN THE SURFACE SEDIMENTS OF THE SOUTHERN YELLOW SEA
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摘要: 对南黄海地区47个表层沉积物样品进行了钙质超微化石分析。结果表明,该区超微化石组合主要以Emiliania huxleyi和Gephyrocapsa oceanica占优势。钙质超微化石总丰度分布不一,主要受水深和黄海暖流的控制。E.huxleyi和G.oceanica两个优势种的平面分布规律也各不相同,E.huxleyi百分含量分布总体上来说与超微化石总丰度分布特征一致:在近岸浅水区含量较低,中央地带丰度较高;G.oceanica百分含量则在靠近南黄海西岸含量较高,离岸较远含量反而变低,反映了其独特的生态习性。Abstract: Calcareous nannofossil analysis have been carried out for 47 surface sediment samples taken from the southern parts of the Yellow Sea(120.5°~125.5°E,31.8°~37°N). The results show that the nannofossils are dominated by the typical marginal assemblages of Emiliania hexleyi and Gephyrocapsa oceanica. The total abundance of calcareous nannofossils varies between 0 and 1451, and is controlled by the water depth and the Yellow Sea Warm Current. The distribution of E.huxleyi and G.oceanica shows a different pattern. E.huxleyi has a similar distribution with the total abundance of nannofossils:higher abundance in the central area and lower abundance in the coastal area. G.oceanica, however, is more abundant in the western coastal area, but less in the sediments far from the coast.These results indicate that the distribution of E.huxleyi were controlled mainly by the water depth and the Yellow Sea Warm Current, and the distribution of G.oceanica is probably linked to the seawater nutrient.
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Key words:
- calcareous nannofossils /
- surface sediments /
- south Yellow Sea
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[1] 汪品先,闵秋宝,卞云华.黄海西北部底质有孔虫、介形虫分布规律及其地质意义[C]//海洋微体古生物论文集.北京:海洋出版社,1980:61-83.[WANG Pinxian,MIN Qiubao,BIAN Yunhua.Distribution of Foramirifera and Ostracoda in bottom sediments of the northwestern part of the southern Yellow Sea and its geological significance[C]//Papers on Marine Micropalaeontology.Beijing:China Ocean Press,1980:61
-83.]
[2] 程振波,石学法,鞠小华.南黄海微体古生物研究概述[J].黄渤海海洋,2000,18(1):84-88.
[CHENG Zhenbo SHI Xuefa JU Xiaohua.The general situation about the study of micropaleontology in the southern Yellow Sea[J].Journal of Oceanography of Huanghai & Bohai Seas,2000,18(1):84-88.]
[3] 程振波,石学法,陈志华,等.南黄海表层沉积物中微体化石的沉积特点及物源分析[J].沉积学报,1999,17:775-781.[CHENG Zhenbo,SHI Xuefa,CHEN Zhihua,et al.The analysis of the sedimentary character of the microfossils and the material resource in the surface sediments from the South Yellow Sea[J].Acta Sedimentol.Sinica,1999
,17:775-781.]
[4] 李文勤.黄渤海表层沉积物中钙质超微化石分布规律与黄海暖流流路[J].黄渤海海洋,1991,9(1):7-11.
[LI Wenqin.The distribution law of calcareous nannofossil in the surficial sediments from the Huanghai Sea and the Bohai Sea and flow way of Warm Current in the Huanghai Sea[J].Journal of Oceanography of Huanghai & Bohai Seas,1991,9(1):355-374.]
[5] 程广芬,周颖春.济州岛附近海域表层沉积物中的颗石及其古海洋学[J].青岛海洋大学学报,1992,22(2):27-41.
[CHENG Guangfen,ZHOU Yingchun.The coccoliths in surface sediments from Ji-Zhou Island sea region and its paleoceanographic significance[J]. Journal of Ocean University of Qingdao,1992,22(2):27-41.]
[6] Okada H, Honjo S. Distribution of coccolithophores in marginal seas along the Western Pacific Ocean and in the Red Sea[J].Marine Biology,1975,31:271-285.
[7] Okada H. Modern nannofossil assemblages in sediments of coastal and marginal seas along the western Pacific Ocean[J].Utrecht Micropaleont.Bulletin,1983,30:171-187.
[8] Houghton S D,Guptha M V S.Monsoonal and fertility controls on recent marginal and continental shelf coccolith assemblages from the western Pacific and northern India Oceans[J].Marine Geology,1991,97:251-259.
[9] Cheng X R, Wang P X.Controlling factors of coccolith distribution in surface sediments of the China seas:marginal sea nannofossil assemblages revisited[J].Marine Micropaleont.,1997,32:155-172.
[10] Houghton S D.Recent coccolith sedimentation patterns and transport in the North Sea:implications for palaeoceanographic studies of marginal and continental shelf seas[C]//D G Jenkins ed.Applied Micropalaeontology.Kluwer, Dordreeht,1993:1-39.
[11] 汪品先,成鑫荣.东海底质中钙质超微化石的分布[J].海洋学报,1988,10(1):76-85.
[WANG Pinxian,CHENG Xinrong. Distribution of calcareous nannoplankton in bottom sediments of the East China Sea[J].Acta Oceanol. Sinica,1988,10(1):76-85.]
[12] 曹奇原,苍树溪,李铁刚,等.冲绳海槽北部表层沉积物中的钙质超微化石及其环境特征[J].海洋与湖沼,2002,22(6):600-607.
[CAO Qiyuan,CANG Shuxi,LI Tiegang,et al.Distribution of calcareous nannofoddils in surface sediments of the northern Okinawa Trough and their environmental characteristics[J].Oceanol. Limnol. Sinica,2002,33(6):600-607.]
[13] 刘传联,邵磊.南海东北部表层沉积中钙质超微化石的分布[J].海洋地质与第四纪地质,2001,21(3):23-28.
[LIU Chuanlian, SHAO Lei.Distribution of calcareous nannoplankton in surface sediments of the northeastern parts of the South China Sea[J].Marine Geology and Quaternary Geology,2001,21(3):23-28.]
[14] Gartner S. Calcareous Nannofossil biostratigraphy and revised zonation of the Pleistocene[J].Marine Micropaleont,1997, 2:1-25.
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