The composition indexes of <i>n</i>-alkanes in sediments and study on paleoenvironment in the Arctic

LU Bing; PAN Jian ming; WANG Zi-pan; CHEN Rong-hua; LU Dou-ding; YE Xin-rong

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LU Bing, PAN Jian ming, WANG Zi-pan, CHEN Rong-hua, LU Dou-ding, YE Xin-rong. The composition indexes of n-alkanes in sediments and study on paleoenvironment in the Arctic[J]. Haiyang Xuebao, 2002, 24(6): 34-48.

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LU Bing, PAN Jian ming, WANG Zi-pan, CHEN Rong-hua, LU Dou-ding, YE Xin-rong. The composition indexes of n-alkanes in sediments and study on paleoenvironment in the Arctic[J]. Haiyang Xuebao, 2002, 24(6): 34-48.

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The composition indexes of n-alkanes in sediments and study on paleoenvironment in the Arctic

Received Date: 2001-01-20
Rev Recd Date: 2001-06-04

Abstract

Abstract

Concentrations and different distribution patterns of n-alkanes in sediments from the Chukchi Sea and, Bering Sea in the Arctic are reported.Factor statistical analysis method is used to study the contaminated source of n-alkanes and paleoenv ironment.The result shows that n-alkanes is in the range of nC₁₅～nC₃₃,n-alkane distribution patterns are characterized by two modes.The first mode with high molecular range for nC₂₅～nC₂₇ being MH and CPI>1 indicates the abundances of terrigenous plantorigin.The second mode with low carbon range for nC₁₇～nC₂₀ being MH and CPI>1 shows that it had more marine biological inputs.The contribution of terrigenous origin is the larger one,with Pr/Ph>1 of the depositional environment,which has strong reducing action.The result of factor analysis is in correspondence with composition indexes of n-alkanes in the sediment.
- the Arctic,
- n-alkanes,
- factor analysis,
- paleoenvir onment

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References(21)

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