地质通报2017，Vol.36Issue(11)：1971-1986,16.
浆混花岗岩专题填图方法初探——以东昆仑加鲁河地区为例
Geological mapping approach to hybrid type granitic batholiths:A case study of the Jialuhe complex from East Kunlun orogen
摘要
Abstract
Mafic enclaves are widespread in the granitic rocks of Eastern Kunlun orogen. They provide essential evidence for mixing events of magmas from the mantle and the crust, and thus the Eastern Kunlun granite belt is considered to be a natural laboratory of magma mixing. In recent years, arguments appear in applying comagmatic granitical mapping method to hybrid type granitic batho?liths in an orogen environment. In this paper, the authors studied the Jialuhe hybrid type granite complex from East Kunlun orogen, aiming to shed some new lights on mapping methods of hybrid type granites. Based on field work, petrography, mineral and rock chemistry information, it is concluded that the Jialuhe granodiorite and the mafic enclaves inside resulted from magma mixing event under open systems. During the work, the authors divided the igneous rocks into two supper units, i.e., hybrid unit and un-hybrid unit. Based on the theory of magma mixing, three sub-units were further established: mafic end-member, felsic end-member and hybrid products. The basic unit for end-member rocks is pluton according to differences in mineral assemblages and textures of rocks. Likewise, the hybrid products could be further divided into different mixing units based on the different degrees of mixing or on the variations of enclave distributions. This mapping method is somehow similar to the traditional comagmatic granitical mapping meth?od, and provides a preliminary exploration scheme for mapping work of hybrid type granite batholiths.关键词
岩浆混合作用/浆混花岗岩/填图方法/包体/东昆仑Key words
magma mixing/hybrid type granite/geological mapping method/mafic enclave/East Kunlun Mountains分类
天文与地球科学引用本文复制引用
王连训,马昌前,熊富浩,王富康,郭富涛,刘敬..浆混花岗岩专题填图方法初探——以东昆仑加鲁河地区为例[J].地质通报,2017,36(11):1971-1986,16.基金项目
中国地质调查局项目《东昆仑东段巴隆地区花岗岩类1:5万填图试点》(编号:DD20160123-01)和国家自然科学基金项目《东昆仑二叠纪—侏罗纪镁铁质岩墙群几何学、运动学和岩石成因研究》(批准号:41272079)、《北大巴山紫阳—岚皋地区古生代碱性火山-侵入杂岩中的卤素体系(F-Cl-Br-I)研究》(批准号:41502046) （编号:DD20160123-01）
