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藏南江孜—哲古一带广泛分布有北西向和近东西向产出的辉绿(长)-辉长闪长岩脉,它们是新特提斯洋晚期发生大规模扩张的产物。本文通过对浪卡子附近辉绿岩脉中的锆石进行SHRIMPU-Pb测年,对其结晶侵位时代进行了约束。测年结果表明,两件样品的加权平均年龄值近于一致,分别为134.9
The southern Tibet-Zhegu area is widely distributed with northwestern and near east-west output of the greenery (long) - gabbro diorites, which are the product of large-scale expansion of the Late Neo-Tethys. In this paper, SHRIMPU-Pb dating of zircons in the diabase dikes near Langkazizi is used to constrain the age of the crystallization emplacement. The results of the dating show that the weighted average ages of the two samples are nearly identical, which are respectively 134.9%