岩石矿物学杂志2013，Vol.32Issue(4)：417-430,14.
新疆图拉尔根基性-超基性岩体中基性包体岩石地球化学特征及其成岩过程
Geochemistry and petrogenesis of mafic enclaves in Tulargen mafic-ultramafic complex, Xinjiang
摘要
Abstract
The Tulargen Cu-Ni sulfide deposit,whose discovery means a great breakthrough in Cu-Ni exploration in Xinjiang in the past ten years,is located in the eastern section of the Huangshan-Jingerquan ore belt.The Tulargen Cu-Ni deposit is a magmatic differentiation deposit related to mafic-ultramafic complex,which comprises three intrusions,namely complex Ⅰ,Ⅱ,Ⅲ,respectively.The hornblende pyroxene peridotite of complex Ⅰ is associated with abundant mafic enclaves,which include ore-bearing gabbro enclaves and plagioclasite enclaves without mineralization.Mafic enclaves and the host display different characteristics in such aspects as mineral species,types and intensities of alteration,contacts between minerals and forming sequence.There exists a distinct boundary,composed of squamiform chlorite,between the mafic enclaves and the host.The Harker diagram of major elements and figures of La,Nd,Zr,and Yb versus SiO2 have shown that samples of the Tulargen complex display a good correlation,whereas the mafic enclaves don't show such characteristics,which indicates that magmatic contamination played a significant role in the formation of the mafic enclaves.Nb/U and Ce/Pb ratios imply that,after crustal contamination,some elements of the mafic enclaves was mobilized and migrated by the late magmatic hydrous fluids.关键词
图拉尔根岩体/基性包体/岩相学/岩石地球化学特征Key words
Tulargen complex/ mafic enclaves/ petrography/ geochemistry分类
天文与地球科学引用本文复制引用
王于健,吕新彪,刘艳荣,曹晓峰,梅微,王富贵,吴建亮..新疆图拉尔根基性-超基性岩体中基性包体岩石地球化学特征及其成岩过程[J].岩石矿物学杂志,2013,32(4):417-430,14.基金项目
国家科技支撑计划新疆305项目(2007BAB25B04) （2007BAB25B04）
