"巫山黄土"的稀土元素特征与成因

张玉芬; 李长安; 邵磊; 周耀; 刘引迪

doi:10.3799/dqkx.2013.018

Volume 38 Issue 1

Jan. 2013

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ZHANG Yu-fen, LI Chang-an, SHAO Lei, ZHOU Yao, LIU Yin-di, 2013. REE Compositions of the 'Wushan Loess' and Its Origin. Earth Science, 38(1): 181-187. doi: 10.3799/dqkx.2013.018

Citation:

ZHANG Yu-fen, LI Chang-an, SHAO Lei, ZHOU Yao, LIU Yin-di, 2013. REE Compositions of the "Wushan Loess" and Its Origin. Earth Science, 38(1): 181-187. doi: 10.3799/dqkx.2013.018

ZHANG Yu-fen, LI Chang-an, SHAO Lei, ZHOU Yao, LIU Yin-di, 2013. REE Compositions of the 'Wushan Loess' and Its Origin. Earth Science, 38(1): 181-187. doi: 10.3799/dqkx.2013.018

Citation:

ZHANG Yu-fen, LI Chang-an, SHAO Lei, ZHOU Yao, LIU Yin-di, 2013. REE Compositions of the "Wushan Loess" and Its Origin. Earth Science, 38(1): 181-187. doi: 10.3799/dqkx.2013.018

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REE Compositions of the "Wushan Loess" and Its Origin

doi: 10.3799/dqkx.2013.018

1.
Institute of Geophysics and Geomatic, China University of Geosciences, Wuhan 430074, China
2.
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
3.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China

Received Date: 2012-04-10
Publish Date: 2013-01-15

Abstract

Abstract

The rare earth element (REE) compositions of the "Wushan Loess" are studied in order to encipher information on the genesis of the "Wushan Loess". The REE patterns, concentrations and indices are used for the discussion. The results show that REE compositions of the "Wushan Loess" are quite different from those of the modern river sediments and similar to those of the Loess Plateau and the "Xiashu Loess" in the middle and lower Yangtze reaches. REE distribution patterns are similar to those of the typical eolian deposits. The index (PI) calculated by source discriminant function is similar to those of the eolian deposits, indicating the eolian origin. The average REE content (216.39×10^-6) is significantly higher to the average rate of the earth crust (178.0×10^-6), two samples from the Loess Plateau (178.22×10^-6), and fairly close to the average rate of the samples from the Xiashu loess in the middle and lower Yangtze reaches (207.7×10^-6). The light rare earth element (LREE) are relatively enriched, while the heavy rear earth element (HREE) are slightly missing. The ratios of LREE and HREE is 8.62. The element Eu negative anomaly is obvious; while the element Ce anomaly is not obvious. It indicates that "Wushan" loess has suffered more intense weathering than the Loess Plateau. The "Wushan Loess" formed under the same weathering conditions as the "Xiashu Loess".
- "Wushan loess",
- rare earth element (REE),
- genesis,
- geochemistry

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References(50)

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