GEOCHEMISTRY AND PETROGENESIS OF THE LAMPROPHYRES RELATED TO GOLD DEPOSITS IN QIXIA, SHANDONG PROVINCE
GENG Rui1, SUN Feng-yue1, DING Zheng-jiang1,2, HU Wei-hua2
1. School of Earth Sciences, Jilin University, Changchun 130061, China; 2. No. 3 Instltute of Geological Exploration of Shandong Province, Yantai 264000, Shandong Province, China
Abstract：The lamprophyres in Qixia area, Shandong Province are always closely associated with gold mineralization. The lamprophyres in the studied area are mainly calc-alkalic spessartite, characterized by high alkali (K) and low Ti, with enrichment of LILEs and LREEs, and depletion of HFSEs and HREEs. Study shows that the lamprophyre should be originated from the partial melting of enriched mantle, which was formed by the metasomatism of fluid in the subduction belt. The magma, formed in island arc calc-alkalic environment, was not significantly mixed with the crustal material during its rising process. The formation of the lamprophyre is the joint effect of multiple dynamic factors.
耿瑞, 孙丰月, 丁正江, 胡伟华. 山东栖霞地区与金矿有关的煌斑岩地球化学特征及成因探讨[J]. 地质与资源, 2012, 21(2): 229-233.
GENG Rui, SUN Feng-yue, DING Zheng-jiang, HU Wei-hua. GEOCHEMISTRY AND PETROGENESIS OF THE LAMPROPHYRES RELATED TO GOLD DEPOSITS IN QIXIA, SHANDONG PROVINCE. GEOLOGY AND RESOURCES, 2012, 21(2): 229-233.
2012, Vol. 21 
辽公网安备 21010502000112号