对秦岭奥长环斑花岗岩的质疑

A Query about So-called Rapakivi Granites in the Qinling Orogen

本文介绍了环斑结构的含义及奥长环斑花岗岩的地质与地球化学特征。在此基础上对所谓的秦岭奥长环斑花岗岩带提出质疑,并提出秦岭中的一些花岗岩虽然具有环斑结构,但不是奥长环斑花岗岩。

This paper introduces the connotation of rapakivi texture and geological and geochemical characteristics of rapakivi granites. Based on a comparison of the granites in the so-called Qinling rapakivi granite belt with typical rapakivi granites in respect to mineralogy, geochemistry and magmatic association, the authos holds that some granitic rocks in the Qinling orogen are not rapakivi granites though they have a rapakivi texture.