摘要
高压矿物的形成与星球撞击作用或地球深部的高温高压环境有关,在地球与行星科学研究中具有特殊的地质环境指示意义.冲击变质岩石(陨石)是发现高压矿物的重要样品来源.目前在地球陨石坑中发现的高压矿物包括柯石英、斯石英、莱氏石、金刚石、蓝丝黛尔石、阿考寨石、里斯石、TiO2-Ⅱ、毛河光矿和镁铁榴石等,这些高压矿物的成因与固态相转变,从熔体中结晶,或矿物分解反应等机制有关.由于地球表面岩石类型和矿物组成的复杂性,地球陨石坑的高压矿物研究具有重要的发展前景,是高压矿物的宝库.
Abstract
The high pressure minerals were formed in association with the collision process of planets or high pressure and high temperature conditions in the deep Earth.They are of special geological significance in the study of Earth and planetary sciences.shock-metamorphic rocks(meteorites)are important sample sources for finding high pressure minerals.Up to now,high-pressure minerals found in the terrestrial impact craters include coesite,stishovite,reidite,diamond,lonsdaleite,akaogiite,riesite,TiO2-Ⅱ,maohokite and majorite.Their genesis is related to the mechanisms including the solid state phase transformation,crystallization from melt,and/or decomposition of mineral.Because of the complexity in types and compositions of rocks and minerals on the earth surface,the study of high-pressure minerals in the terrestrial impact craters which are treasure houses for high-pressure minerals has an important development prospective.
维普
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