(1. 中南大學 有色金屬成礦預測教育部重點實驗室，長沙 410083；
2. 中南大學 地球科學與信息物理學院，長沙 410083；3. 銅陵有色金屬集團控股有限公司，銅陵 244000)
摘 要: 從巖石學、巖石化學、稀土元素地球化學和微量元素地球化學特征入手，對形成月山巖體的巖漿來源、成巖環(huán)境以及巖漿的成巖作用過程進行分析；在此基礎上，對本區(qū)月山巖體的成巖機制進行探討。結果表明：本區(qū)巖漿主要來源于上地幔堿性玄武巖漿，成巖環(huán)境為島弧及活動大陸邊緣區(qū)，巖漿成巖演化過程中受到了上部地殼的同化混染，成巖機制為結晶分異和深部硅鋁質(zhì)同化混染及淺部弱鈣質(zhì)同化混染機制。
關鍵字: 月山巖體；稀土元素；地球化學；成巖機制；結晶分異；同化混染
Tongling, Anhui Province, China
（1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education,
Central South University, Changsha 410083, China;
2. School of Geoscience and Info-Physics, Central South University, Changsha 410083, China;
3. Tongling Nonferrous Metals Group Co., Ltd., Tongling 244000, China）
Abstract:The origin of magma which formed Yueshan intrusion，the metallogenic environment and the diagenesis of magma were investigated based on the analysis of petrology, lithochemistry, trace elements and rare earth elements geochemistry. The diagenetic mechanism was discussed in this area. The results show that the magma rooted in upper mantle alkali basaltic magma, the diagenesis environment is the island arc and active continental margin areas, and the magmas experiences assimilation and contamination of the crustal materials to different degrees during the process of diagenetic evolution. The rock-forming mechanism is crystal fractionation combined with deep salic assimilationary- hybridization and shallow weak calcareous assimilationary-hybridization.
Key words: Yueshan intrusion; rare earth element; geochemistry; rock-forming mechanism; crystal fractionation; assimilationary-hybridization
