摘要
与I型和S型花岗岩一样,A型花岗岩也是一种重要的成因类型。对A型花岗岩的有效鉴别,在理论和实践上均是必需的。过去有关论文较少,一般就其个别方面予以论述,有些不够全面具体。本文通过总结现有研究成果,就岩石类型、岩石化学、微量元素、同位素、构造环境和矿产等方面,给出综合、准确、适用的A型花岗岩鉴别标志。
A-type granites keep abreast of I-type and S-type granitites, and are animportant genetic type. It is essential in theory and practice that A-type granites are effectively discriminated. The relative theses of the past generally stated it at individual aspects or it was not clear and concrete enough. This papergives the relatively systematic, concise and applicable matks of discrimination inrock type, petrochemistry, trace element, isotope, tectonic surroundingsand orc by summarizing available research achievements.
关键词
花岗岩
A型花岗岩
鉴别标志
A-type granite
Discriminating marks
Genetic type
