Radiolaria fossils in the surface sediments and sedimentary rnenvironment in the Bering Sea

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Radiolaria fossils in the surface sediments and sedimentary rnenvironment in the Bering Sea

机译：白令海表层沉积物中的放射虫化石和沉积环境

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Totally 2472 grains of Radiolaria belonging to 36 Genera and 45 species are rndistinguished from 12 surface sediments in the Bering Sea. The distribution rncharacteristics of Radiolaria fossils in the surface sediments are as follows: (1) From rnthe shelf of shallow water to the upper of continental slope, there are a few Radiolaria rnfossils and monotonous genus and species; (2) In the lower of continental slope,rnRadiolaria fossils are poor in the volcanic cinders and turbidite; (3) The abundance and rndiversity of Radiolaria fossils are high in clay of the basin. The dominant species of rnRadiolaria is Spongotrochus glacialis on the continental shelf. Current, topography,rnwater depth, and temperature etc. are key factors influencing Radiolaria distribution.rnThe sources of sediments mainly are terrigenous, biogenic and volcanic sediments in the rnsurvey area and they are mostly from the Kamchatka peninsula in the east of Russia and rnthe Aleutian Islands.

机译：在白令海的12种表层沉积物中，共区分出2472个属于36属和45种的放射丝虫。放射虫化石在表层沉积物中的分布特征如下：（1）从浅水层到大陆斜坡的上部，有少量放射虫化石和单调属和种。（2）在大陆斜坡的下部，火山灰和浊积岩中的放射线虫化石较差; （3）盆地粘土中放射虫化石的丰度和多样性。放射Radi虫的主要种类是大陆架上的冰原海绵。水流，地形，水深和温度等是影响放射虫分布的关键因素。rn沉积物的来源主要是rnsurvey地区的陆源，生物和火山沉积物，它们主要来自俄罗斯东部的堪察加半岛和阿留申群岛岛屿。

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《极地科学进展(英文版)》 |2000年第2期|89-96|共8页
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Key Laboratory of Marine Science and Numerical Modeling, First Institute of Oceanography, SOA,rnQingdao 266003, China;

Key Laboratory of Marine Science and Numerical Modeling, First Institute of Oceanography, SOA,rnQingdao 266003, China;

Key Laboratory of Marine Science and Numerical Modeling, First Institute of Oceanography, SOA,rnQingdao 266003, China;

Key Laboratory of Marine Science and Numerical Modeling, First Institute of Oceanography, SOA,rnQingdao 266003, China;

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正文语种 chi
中图分类自然地理学;
关键词
Bering Sea; Radiolaria fossils; sources of sediments;

机译：白令海;辐射ol化石;沉积物来源;

Radiolaria fossils in the surface sediments and sedimentary rnenvironment in the Bering Sea

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