Abstract：Study on the volcanic rocks from Elashan Formation in Zhong Juh area, Qinghai Province, indicates that it belongs to acid-intermediate high-K and low-Ti calc-alkali series. The analysis results reveal that ∑REE varies from 139.45×10-6 to 219.55×10-6, with enrichment of LREEs (LREE/HREE of 7.695-13.46, averagely 9.09). The distribution patterns show gently right-dipping smooth curves with weak negative Eu anomaly(δEu=0.53-0.83). The general uniformity of trace element curve patterns reflects the homogeneity of volcanic rocks in this area. According to the analysis on tectonic environment, it is concluded that the volcanic rocks is the product of magmatic arc formed by compression and collision.
赵明福, 史连昌, 李成福, 魏有宁, 李玉龙. 青海省中灶火地区鄂拉山组火山岩地球化学特征及构造环境[J]. 地质与资源, 2018, 27(2): 117-123.
ZHAO Ming-fu, SHI Lian-chang, LI Cheng-fu, WEI You-ning, LI Yu-long. GEOCHEMISTRY AND TECTONIC ENVIRONMENT OF THE VOLCANIC ROCKS FROM ELASHAN FORMATION IN ZHONG JUH AREA, QINGHAI PROVINCE. GEOLOGY AND RESOURCES, 2018, 27(2): 117-123.
2018, Vol. 27 
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