Distributions and sources of clay minerals in the surface sediments of the western Arctic Ocean

Dong Linsen; Liu Yanguang; Shi Xuefa; Fang Xisheng; Chen Zhihua; Yan Shijuan; Huang Yuanhui

doi:10.3969/j.issn.0253-4193.2014.04.010

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Dong Linsen, Liu Yanguang, Shi Xuefa, Fang Xisheng, Chen Zhihua, Yan Shijuan, Huang Yuanhui. Distributions and sources of clay minerals in the surface sediments of the western Arctic Ocean[J]. Haiyang Xuebao, 2014, 36(4): 22-32. doi: 10.3969/j.issn.0253-4193.2014.04.010

Citation:

Dong Linsen, Liu Yanguang, Shi Xuefa, Fang Xisheng, Chen Zhihua, Yan Shijuan, Huang Yuanhui. Distributions and sources of clay minerals in the surface sediments of the western Arctic Ocean[J]. Haiyang Xuebao, 2014, 36(4): 22-32. doi: 10.3969/j.issn.0253-4193.2014.04.010

Citation:

Dong Linsen, Liu Yanguang, Shi Xuefa, Fang Xisheng, Chen Zhihua, Yan Shijuan, Huang Yuanhui. Distributions and sources of clay minerals in the surface sediments of the western Arctic Ocean[J]. Haiyang Xuebao, 2014, 36(4): 22-32. doi: 10.3969/j.issn.0253-4193.2014.04.010

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Distributions and sources of clay minerals in the surface sediments of the western Arctic Ocean

doi: 10.3969/j.issn.0253-4193.2014.04.010

Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China

Received Date: 2013-01-31
Rev Recd Date: 2013-09-16

Abstract

Abstract

Regional distribution and variation of clay minerals in the study area are presented in detail based on the clay mineral analysis of the surface sediments. Generally, the smectite and kaolinite contents show an increasing trend from the Chukchi Sea to the deep sea of the Arctic ocean , and the chlorite and illite contents show a decreasing trend. In the study area, from west to east, values of illiteChemical index show an increasing trend, and the values of illite crystallinity is in opposite. Based on clay mineral assemblages obtained from Q-type Cluster analysis, combined with the geological background of the peripheral land, rivers and ocean current, we got the clay mineral assemblages partitions of the study area and discussed its clay mineral source. Clay mineral assemblages type near the Alaska of Chukchi Sea side are mainly Ⅰ type, on the side of the East Siberian Sea contain Ⅱ, Ⅲ and Ⅳ types, on the middle of Chukchi Sea are mainly Ⅵ type.The sources of clay mineral assemblages in Chukchi Sea shelf are volcanic rocks, metamorphic rocks, kaolinite-bearing sediments and ancient soil of Siberia and Alaska from rivers emptying into the Pacific and eastern Arctic ocean and then transported into the Chukchi Sea through three branches of the Pacific Water and the Siberian Coastal Current; Clay mineral assemblages of Western Arctic deep water sediments are mainly Ⅰ and Ⅴ type, indicating that the the source of clay mineral assemblages are ice-rafted deris in sea ice of Eurasian continental shelf and periphery waters of the Canadian Arctic Archipelago, in addition, Mackenzie River and the subsurface Atlantic layer circulation can also contribute clay minerals.
- clay minerals,
- western Arctic Ocean,
- distribution,
- sources

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References(33)

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