摘要
本文经过广西清湖二长岩锆石的铀—铅同位素年龄研究,得到锆石铀—铅同位素不一致线与一致曲线的上、下交点年龄分别为2642Ma及158.4Ma,据此本文认为两广沿海地区可能存在太古代岩石,清湖二长岩形成于燕山早期。
This paper deals with the Zircon U -Pb isotope ages of the Qinghu Monzonite in Guangxi. The Zircon U -Pb discordia curve obtained gives and upper intersection age of 2642 m. y. and a lower intersection age of 158. 4 m. y. indicating that Archaean strata may exist in the coastal area of Guangxi and Guangdong and that the Qinghu Monzonite was formed in early Yenshanian period.
基金
国家自然科学基金项目4880148阶段
