Geochemical Features and Tectonic Significances of Yuanjiacun Formation Metasedimentary Rocks in Shanxi Province

doi:10.12068/j.issn.1005-3026.2018.10.014

Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (10): 1438-1441.DOI: 10.12068/j.issn.1005-3026.2018.10.014

• Resources & Civil Engineering • Previous Articles Next Articles

Geochemical Features and Tectonic Significances of Yuanjiacun Formation Metasedimentary Rocks in Shanxi Province

MEN Ye-kai¹， GENG Rong-rong²， YOU Xin-wei³， HE Qiang-wen³

1. School of Resources & Materials， Northeastern University at Qinhuangdao， Qinhuangdao 066004， China; 2. Geology Exploration Research Institute， Metallurgical Geology Exploration Bureau of Liaoning Province， Anshan 114038， China; 3. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Received:2017-06-04 Revised:2017-06-04 Online:2018-10-15 Published:2018-09-28
Contact: MEN Ye-kai
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Abstract

Abstract: Early proterozoic Yuanjiacun Formation is the main ore bearing stratum in Lyuliang district. The elemental geochemical compositions of the samples were tested. Results showed that the major element is mainly SiO₂， then is Al₂O₃， TFeO and K₂O in sequence. SiO₂ exhibits negative correlation with the other major oxides， and LILE and HFSE are significantly rich. The rare earth element distribution curves take on obvious right-divergent characteristics， with strong fractionations of light and heavy rare earth and rich light rare earth. The Ce anomalies are extremely weak， and the range of Eu anomalies is relatively large. The Yuanjiacun Formation is parametamorphite， and the original rock is dominated by sedimentary rock with weak weathering during the deposition process. The provenance attributem is dominated by high-mature upper crustal felsic sediments mixed by small amount of rocks containing ancient sedimentary components and andesitic arc igneous rock components in the sedimentary process. The tectonic environment is passive continental margin.

Key words: Yuanjiacun Formation, element geochemistry, protolith restoration, provenance attributem, tectonic environment

CLC Number:

P618.51

MEN Ye-kai， GENG Rong-rong， YOU Xin-wei， HE Qiang-wen. Geochemical Features and Tectonic Significances of Yuanjiacun Formation Metasedimentary Rocks in Shanxi Province[J]. Journal of Northeastern University Natural Science, 2018, 39(10): 1438-1441.

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Geochemical Features and Tectonic Significances of Yuanjiacun Formation Metasedimentary Rocks in Shanxi Province

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