Geochemical Characteristics of Rare Earth Elements in Deep Geological Profile of Qitianling Intrusion, Hunan  Province

Han-han HE; Jian-kang LI; Chao LI; Xiao-yun SU; Zhi ZHAO; Yi-jun ZHANG; Guo-rui WANG

2014 Vol. 33, No. 1

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Article navigation > Rock and Mineral Analysis > 2014 > 33(1): 110-117

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Han-han HE, Jian-kang LI, Chao LI, Xiao-yun SU, Zhi ZHAO, Yi-jun ZHANG, Guo-rui WANG. Geochemical Characteristics of Rare Earth Elements in Deep Geological Profile of Qitianling Intrusion, Hunan Province[J]. Rock and Mineral Analysis, 2014, 33(1): 110-117.

Citation:

Geochemical Characteristics of Rare Earth Elements in Deep Geological Profile of Qitianling Intrusion, Hunan Province

1.
Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China;
2.
School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China;
3.
National Research Center for Geoanalysis, Beijing 100037, China;
4.
Southern Hunan Institute of Geology and Survey, Chenzhou 423000, China

More Information

Corresponding author: Jian-kang LI, li9968@126.com

Received Date: 13 November 2013

Accepted Date: 01 December 2013

Abstract

Abstract

Baishidu-Feixianzhen profile in Qitianling intrusion of Hunan Province is one of the most important profiles carried out in Sinoprobe. Despite the fact that a large amount of previous research had been carried out using various methods on rare earth elements (REEs) characteristics of Qitianling granite complex, no systematical study has been undertaken on geochemical characteristics from different geological units including limestone, sandstone, quaternary eluvial clays, the plution and the weathering crust. Analysis of the REEs in the profile through Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) has been carried out and is reported in this paper. The results indicate that all geology units have LREE enrichment pattern, while a great difference exists between ΣREEs. For the total content of REEs in Qitianling Granite, the weathering crust has the highest level of ΣREEs with an average value of 605×10^-6, and the limestone has the least ΣREEs with an average value of 154.3×10^-6. In addition, the closer to the intrusions, the higher ΣREEs contents have in strata, even for the same lithology rock. In combination with REE-Y/ΣREE, ΣREE-δEu diagrams and Os Isotope tracer results, Qitianling granitoids might have mixed with some mantle materials. The content of REEs in the Qitianling Granite weathering crust (average value of RE₂O₃ is 814.8×10^-6) are more than the cutoff grade of ion-absorbed-type REEs deposit (HREE RE₂O₃0.05% and LREE 0.07%) in the main, which deserves further exploration.
- Qitianling intrusion /
- Baishidu-Feixianzhen geological profile /
- rare earth elements /
- geochemical characteristics

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