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对新疆塔斯嘎克岩体的 1 1个岩石样品的碱性长石、石英、钠铁闪石 ,进行了氧氢同位素组成测定 .岩浆次固相冷凝过程中与大气水的同位素交换是导致D和18O亏损的机理 ,并且造成了石英与共生碱性长石、钠铁闪石显著的不平衡18O/16O关系 .碱性长石的出溶、微组构重建与大气水的渗透相互促进 .浅侵位以及大气水的流进流出对于岩体起到了有效的冷却作用 ,岩体“热引擎”迅速熄灭 ,共生矿物的不平衡18O/16O关系才得以冻结下来 .
Oxygen and hydrogen isotopic compositions of alkaline feldspar, quartz and sodium iron hornblendam in 11 rock samples from the Tusigeacan massif in Xinjiang were determined. The isotopic exchange with atmospheric water in the magmatic sub-solid phase condensation process resulted in D and 18O depletion mechanism, and led to the quartz and symbiotic alkaline feldspar, sodium iron feldspar significant imbalance 18O / 16O relationship. Alkali feldspar dissolution, micro-structure reconstruction and atmospheric water mutual promotion The shallow emplacement and the inflow of outflow of atmospheric water have played an effective cooling role for the rock mass, and the “hot engine” of the rock mass is rapidly extinguished, and the imbalance of the intergrowth mineralization can be frozen down to 18O / 16O.