论文部分内容阅读
采自陕豫交界秦岭群中的榴辉岩主要由石榴子石和绿辉石组成，同时还含有少量的角闪石和金红石。本工作由四个单矿物和全岩五个样，测得Sm－Nd等时年龄为400±16Ma，（r＝0．997575），εNd＝十3．6，说明在加里东期北秦岭造山带发生过高压变质事件。
The eclogites collected from the Qinling Mountains at the junction of Shaanxi and Henan are mainly composed of garnet and omphacite, together with a small amount of amphiboles and rutiles. The work consists of four single minerals and five rock samples. The Sm-Nd isochron age is 400 ± 16Ma (r = 0.997575) and εNd = ten 3.6, indicating that the Caledonian North Qinling orogeny Belt occurred high-pressure metamorphic events.