Abstract：The major elements and trace elements of the Guanmenshan syenogranite in Benxi area, Liaoning Province are studied. The characteristics of the major elements show that the syenogranite belongs to high-K calcium-alkaline series. The seagull-shaped chondrite-normalized REE distribution patterns suggest enrichment of LREEs and depletion of HREEs, with medium negative Eu anomalies. Trace element spider diagram shows that the rocks are enriched in large ion lithophile elements (LILEs, such as Rb, Th and K), whereas depleted in high field strength elements (HFSEs, such as Ta, P and Ti). The composition of trace elements in syenogranite indicates that the formation pressure of granite magma is less than 1.0 GPa, and the source materials exist in the depth of 30-40 km of the earth crust, belonging to thinned crust. The syeogranite was formed in the Early Cretaceous when the Liaodong block was in intracontinental extension environment.
石绍山, 尤洪喜, 成龙, 魏明辉, 宋运红, 姚远, 王宇利. 辽宁本溪地区关门山岩体地球化学特征及构造环境[J]. 地质与资源, 2014, 23(5): 440-445.
SHI Shao-shan, YOU Hong-xi, CHENG Long, WEI Ming-hui, SONG Yun-hong, YAO Yuan, WANG Yu-li. GEOCHEMISTRY AND TECTONIC ENVIRONMENT OF THE GUANMENSHNA INTRUSIVE ROCKS IN BENXI AREA, LIAONING PROVINCE. GEOLOGY AND RESOURCES, 2014, 23(5): 440-445.
2014, Vol. 23 
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