云南建水县长岭岗岩体包体特征与岩浆作用

The Inclusion Feature and Magmatism of Changlinggang Rock Body in Jianshui,Yunnan

云南建水县长岭岗岩体由碱长正长岩、霞石正长岩(广义的)构成。霞石正长岩(广义的)可进一步划分为黑云霞石正长岩、霓辉霞石正长岩、黑榴霞石正长岩、霞石正长岩。岩石中之包体划分为残余包体、残浆包体、深源捕虏体、浅源捕虏体。岩浆的形成与演化过程中,分离结晶作用明显,混合或混染作用较强。该侵入体的就位机制,很可能属被动就位中的岩墙扩张。在就位过程中有类似热气球膨胀的地质作用。

Changlinggang rock body in Jianshui, Yunnan is composed of alkali syenite and nepheline syenite （in Broad Sense）. The nepheline syenite can be divided further into biotite nepheline syenite, aegyrite-augite nepheline syenite, melanite nepheline syenite and nepheline syenite. The inclusion in rock can be divided into remained inclusion, relict magma inclusion, deep origin xenolith and shallow origin xenolith. In the formation and evolution of magma, the differential crystalline clear, migmatization or contamination intense. The emplacement of intrusion body belongs probably to the dyke expansion of passive emplacement. There is the geological process similar to the heat balloon.