金红石的研究现状及地质学意义

Research Status and Geological Significance of Rutile

金红石,是含钛的主要矿物之一,其资源量分布不均。近年来关于金红石的研究,主要集中在中-高级变质岩,沉积岩中。主要的几个应用大致如下:①金红石放射性测年体系研究;②金红石的微量元素研究:Nb和Ta、Cr和Nb;③金红石Zr温度计的应用,提高P-T-t轨迹精度,对变质作用过程进行反演;④金红石是很好的标型矿物,可指示超高压变质过程中有限的流体活动和快速的板块俯冲一折返过程。

Rutile,one of the main titanium bearing minerals,is unevenly distributed.In recent years,the research on rutile is mainly concentrated in medium high grade metamorphic rocks and sedimentary rocks.The main applications are as follows:①study on the radioactive dating system of rutile;②study on trace elements of rutile:Nb and Ta,Cr and Nb;③application of Zr thermometer in rutile to improve the accuracy of P-T-t trajectory,and to inverse the metamorphic process;④Rutile is a good typomorphic mineral,indicating limited fluid activity and rapid plate subduction exhumation process during UHP metamorphism.