埃达克岩与埃达克质岩在中国的研究进展

Research Advances of Adakites and Adakitic Rocks in China

综述了从2000年至现今中国科学家研究板片熔融形成的埃达克岩与非板片熔融产生的埃达克质岩所取得的代表性研究进展和重要贡献。作者提出埃达克质岩的4种成因类型:(1)下地壳部分熔融的埃达克质岩;(2)拆沉下地壳部分熔融形成的埃达克质岩;(3)基性岩浆高压分异的埃达克质岩;(4)混合成因的埃达克质岩。并总结出拆沉下地壳部分熔融、岩石圈拆沉、岩浆混合机制形成埃达克质岩是中国科学家提出的新成因模型,最后讨论了埃达克质岩与非俯冲环境的斑岩Cu-MoAu矿床的成因联系。

This paper reviews important progresses and contributions achieved by Chinese scientists on the researches of adakites from slab melting and adakitic rocks from non-slab melting from the year 2000 to present. We divided adakitic rocks into four origin types as following： （1） adakitic rock produced by direct partial melting of lower crust; （2） adakitic rock generated by partial melting of delaminated lower crust; （3） adakitic rock by differentiation of a basaltic magma at high pressure condition; （4） adakitie rock by magma mixing. We conclude that ＂partial melting of delaminated lower crust＂, ＂lithospheric delamination＂, and ＂magma mixing＂ to form adakitic rock are new origin models suggested by Chinese scientists. Finally, we address and discuss the genetic relationship between adakitic rock and porphyry Cu-Mo-Au deposit from non-subduction setting.