Metamorphism and Tectonics of the Eastern Ghats Granulite Belt, India.

该研究旨在获得东高止麻粒岩带和东冈瓦纳相关地区的最新地质知识，并更好地了解东高止麻粒岩带的构造历史。从1996年4月至1998年3月，进行了为期3年的系统文献调查和岩石学及年代学分析。利用新安装的流体包裹体分析设备，沿着现有设备，包括EPMA、XRF等进行分析研究。与其他机构合作进行了地质年代学分析。研究的主要结果包括以下几点。(1)EPMA独居石测年和Sm-Nd测年表明，在2000 ~ 500 Ma期间发生了多次叠加事件。主要变质事件估计约为2000 Ma和1500 Ma。相关火成岩的地球化学特征表明，早期事件发生在挤压体制下，晚期事件发生在伸展体制下。(2)晚期事件包括1000 Ma左右挤压构造体制下的麻粒岩相变质作用，以及800 Ma和500 Ma左右的构造事件，均与花岗质侵入体有关。(3)本研究项目的结果发表在15本英文书籍中，在各种科学期刊上发表了59篇论文，其中大部分是英文，并在国际研讨会上进行了56次口头报告。

The research aimed to obtain a recent knowledge of geology of Eastern Ghats Granulite Belt and related areas in East Gondwana, and to reach to a better understanding on the tectonothermal history of the Eastern Ghats belt. Systematic bibliographic survey and petrological and geochronological analysis of rock samples were conducted for 3 years from April 1996 to March 1998. A newly installed equipment on fluid inclusion analysis, along with existing facilities including EPMA, XRF, etc were utilized for the analytical studies. Geochronological analysis was conducted in collaboration with other institutions. Major results of the research include the followings.(1) EPMA monazite dating and Sm-Nd dating suggested several superposed events occurred during ca 2000 to 500 Ma. Major metamorphic event is estimated to be ca 2000 Ma and 1500 Ma. Geochemical signature of related igneous rocks suggested that the earlier event took place under the compressional regime and the later event, under the extensional regime.(2) Further later events include granulite facies metamorphism under compressional tectonic regime at around 1000 Ma, and some other tectonothermal events took place at around 800 Ma and 500 ma, both being associated with granitic intrusions.(3) Results of the present research project were published in 15 English books, 59 papers in various scientific journals mostly in English, and 56 oral presentations at mostly international symposiums.