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墨江镍金矿床(黄铁矿)硅质岩的成岩成矿时代

Published in Chinese Science Bulletin (Chinese Version) • May 1, 2001
NobleIDNI5P58W81R90S56
Authors:
维萱 方
,
桂青 谢
,
文超 苏

Abstract

用同位素地球化学年代学,探讨墨江镍金矿床热水喷流同生沉积成矿时代、赋矿地层金厂岩组的形成时代.含镍金黄铁矿硅质形成时代为:Sm-Nd等时线年龄(t)=(358±8.6) Ma(2σ),Rb-Sr等时线年龄(t)=(354.7±0.72)Ma(2σ).上泥盆统金厂岩组深水硅质岩的Sm-Nd等时线年龄(t)=(359±21)Ma(2σ),Rb-Sr等时线年龄(t)=(358.02±0.3)(2σ)Ma.

Subject

Political science
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