摘要
本文根据云南剑川杂岩体中岩石包体的分布、大小、形态、岩石类型、化学成分及矿物组成特征,探讨包体的成因,并推测寄主岩浆岩的性质、来源。认为剑川杂岩体中的岩石包体可分为捕虏体和同源包体,同源包体又可分为析离体和堆积岩。推测的岩体初始岩浆温度为1000—1125℃,形成深度约为20—30km。
Besed on the characteristics of distribution, size, shape, rock types chemical composition and minerals from Jianchuan complex, enclosure genesis has been disscussed, characteristics and resource froming of host magmatic rocks are estimated. Enclaves from Jianchuan complex includes xenolith and comagmatic enclave. In addtion, comagmatic enclave are also divided into dialyse and accumulative rocks. It is believed that orginal magma temperature ranges from 1000-1125℃, implacement depth of magma is about 20-30 km.
出处
《火山地质与矿产》
1993年第4期54-59,共6页
Volcanology & Mineral Resources
关键词
岩石包体
岩浆岩
云南
杂岩体
成因
enclosure of rocks, magmatic rocks, Yunnan Province
