摘要
研究表明,岩带是由沉积变质岩在675—969℃,4.3—6.7kbar和水不饱和的条件下部分熔融形成的。岩浆在627—862℃,约0.5—4kbar条件下定位结晶。大容山岩体原岩属角闪岩相,旧州岩体与台马岩体原岩属麻粒岩相。从大容山岩体、旧州岩体到台马岩体,源区温压依次升高。
Studies show that the granite belt was formed through partial melting of the metasedimen-tary rocks under waterunsaturation conditions at 675-969℃ and 4.3-6.7 kbar.Magmatic emplacement and crystallization took place at 627-862℃ and 0.5-4 kbar. The original rocks of the Darongshan mass belong to the hornblendite facies while those of the Jiuzhou and Taima masses belong to the granulite facies. The temperature and pressure in the source region increase progressively.
出处
《地球化学》
CAS
CSCD
北大核心
1989年第4期287-296,共10页
Geochimica
