THE APPLICATION OF PARTIAL MELTING MODEL TO THE STUDY ON PETROGENESIS OF SOME SPECIES OF GRANITIC ROCKS IN SOUTHERN CHINA

71 REE data of 30 granitic rock species in southern China were collected. According tothe equilibrium partial melting model, the mineralogical and chemical compositions of theresidual phases as well as the melting degrees were calculated, which led to the determina-tion of the source materials of these granitic rock. The result shows that there are two typesof petrogenetic rocks among them, i.e. crustal granite and mixed granite. And the mixedratios were obtained for the latter case. A brief discussion on the factors affecting the REE patterns is also made.     

用REE部分熔融模式探讨某些华南花岗岩体的成因

本文收集了华南30个花岗岩类岩体的71组REE数据,根据平衡部分熔融模式,计算了各花岗岩类岩体在形成时的残留相化学成分、矿物学成分和熔融程度,并确定了各花岗岩体的物质来源,根据来源物质的不同,将这些花岗岩体分为两种成因类型,即壳型和混合型,对属于混合型的岩体计算了它们的混合比。并讨论了影响REE模式的因素。