中国水系沉积物39种元素系列背景值

史长义; 梁萌; 冯斌

doi:10.3799/dqkx.2016.018

Volume 41 Issue 2

Feb. 2016

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Shi Changyi, Liang Meng, Feng Bin, 2016. Average Background Values of 39 Chemical Elements in Stream Sediments of China. Earth Science, 41(2): 234-251. doi: 10.3799/dqkx.2016.018

Citation:

Shi Changyi, Liang Meng, Feng Bin, 2016. Average Background Values of 39 Chemical Elements in Stream Sediments of China. Earth Science, 41(2): 234-251. doi: 10.3799/dqkx.2016.018

Shi Changyi, Liang Meng, Feng Bin, 2016. Average Background Values of 39 Chemical Elements in Stream Sediments of China. Earth Science, 41(2): 234-251. doi: 10.3799/dqkx.2016.018

Citation:

Shi Changyi, Liang Meng, Feng Bin, 2016. Average Background Values of 39 Chemical Elements in Stream Sediments of China. Earth Science, 41(2): 234-251. doi: 10.3799/dqkx.2016.018

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Average Background Values of 39 Chemical Elements in Stream Sediments of China

doi: 10.3799/dqkx.2016.018

Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China

Received Date: 2015-08-11
Publish Date: 2016-02-15

Abstract

Abstract

Large amounts of high quality basic geochemical data covering a land area of about 6 900 000 square kilometers have been gained by regional geochemical survey mainly featuring stream sediment measurement since 1978 in China. The development and utilization of the comparative data in different areas and different ranges is an important part of the research of dispersion of element enrichment, metallogenic tendency, and anomaly evaluation. Based on the total original data of the national 1:200 000 stream sediment survey, background values of 39 elements in stream sediments are calculated for the nationwide 9 tectonic units, 12 landscape areas and 19 metallogenic belts. The median of the data set after disposable eliminating outliers from a data population with X±3S as the critical value is used as an estimate value of geochemical background values. Different element distributions and characters of background values of the nationwide tectonic units, landscape areas and metallogenic belts are discussed. The results show that geochemical distributions of elements are different among various landscapes, metallogenic belts and tectonic units because of different geological backgrounds and landscape conditions. It shows there are different regional distribution characteristics and the different distribution patterns. These background values can be used as basic data for comparison for further development and utilization of regional geochemical data.
- median,
- background value,
- stream sediment,
- regional geochemical survey,
- geochemistry

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References(94)

References

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