当前高压变质作用研究中几个值得注意的动向

NOTABLE TRENDS IN CURRENT STUDY OF HIGH PRESSURE METAMORPHISM

高压、超高压变质作用是地学研究的热点，它能很好地反映深部地质作用特征和恢复地质历史演化的过程。当前高压、超高压变质作用研究中有几个值得注意的动向：（１）高压变质作用中流体性状和物理化学特点的研究是解决高压变质作用成因的关键；（２）高压变质矿物流变学研究是揭示变质过程的有效途径；（３）超高压变质岩的发现是８０年代地学领域中的一场“革命”，其动力学模式为探讨大陆动力学开辟了新的思路。文中介绍了产生超高压变质的柯石英榴辉岩亚相组合的六种动力学模式。

High and ultra-high pressure metamorphism is a hot topic in current earth sci-ence research.It both reflects the characteristics of geology in the dephths of the Earth andgives a concise picture of geological history. Some notable trends in the current study ofhigh pressure metamorphism include:(1)study of fluids and their physicochemistry as akey to understanding the genesis of high pressure metamorphism;(2)study of the rheolo-gy of high pressure metamorphic minerals as an effective way to detect metamorphic pro-cesses. Discovery of ultra- high pressure metamorphic rocks brought about a revolution inearth sciences in the 1980s.The resulting dynamic models have opened new ways to ex-plore geodynamics.In this paper,six dynamic models which recreate ultra- high pressuremetamorphic coesite-eclogite subfacies are presented and evaluated.