俯冲-碰撞和高压、超高压变质带中的金红石研究进展

金红石是高级变质岩和热液矿床中广为展布的一种矿物。目前，金红石在俯冲—碰撞和高压—超高压变质带中研究包括以下4个方面：①金红石在俯冲—碰撞带中的作用；②金红石同质多象变体；③金红石的U Pb定年；④金红石对源区的示踪。第一方面的研究一直是最近10余年来研究的主题之一，而后3个方面的研究尚处于起步阶段，上述研究对认识俯冲—碰撞过程中埃达克岩的成因和特征，对超高压大陆深俯冲深度及形成岩石温压条件的限定，对重塑超高压或高级变质地体峰期变质事例年龄，对赋存金红石岩石的源区示踪具有重要的意义。

The Research Advances in the Rutile in the Subduction-Collision Zone, High Pressure and Ultrahigh Pressure Metanorphic Zone

Rutile is a widely distributed mineral in high-grade metamorphic rocks and hydrothermal deposits.The rutile studies of the subduction-collision zones and high pressure and ultrahigh pressure metamorphic zones include(1) role of the rutile in the subduction-collision zone;(2) polymorph of rutile;(3) U-Pb dating of rutile and(4) tracing of rutile for a source rock.These studies is very important not only for origin and characteristics of the akadite in the subduction-collision zone but also for the depth,temperature and pressure of continental ultra-deep subduction,and age of the metamorphic event in high-grade metamorphic terrane,and tracing of the rutile-hosted source rock.