摘要
介绍含Th U Pb矿物电子探针化学测年方法的基本原理 ,并利用应用实例说明该方法在研究岩石形成年龄、构造热事件年代等方面的重要作用 ,最后简要评价该方法的优、缺点 ,并指出它的应用前景 ,认为电子探针化学测年方法将有可能在深源岩石包体年龄研究、含放射性元素矿床形成年代研究等方面大有作为 ,并使地质年代学研究更加精细化 ,有助于深入探讨复杂地质事件及其演化历程。
The electron microprobe chemical dating technique, including its theoretical basis and age calculation method, is introduced. Recent studies show that it can produce reliable U Th Pb chemical ages of monazite, zircon and baddeleyite. The applications of this technique to timing of rocks and timing of metamorphic and deformational events are also of good results. So this technique is an increasingly important tool for dating and tectonic analysis. Considering the very high spatial resolution(1μm) and other advantages of the electron microprobe, we point out that more applications should be highlighted: (1) timing of rock inclusions in igneous rock; (2) timing of mineral deposits; and (3) timing of hydrothermal veins with radioactive elements.
出处
《地学前缘》
EI
CAS
CSCD
2003年第2期411-414,共4页
Earth Science Frontiers
基金
国土资源部专项研究计划项目 ( 2 0 0 10 10 3 )
