东北地区早古生代（~500 Ma）变质杂岩的性质及其形成的动力学背景

建议项目以东北地区早古生代变质杂岩（包括早古生代孔兹岩和同期岩浆杂岩）为主要研究对象，通过查明东北地区早古生代孔兹岩、同期岩浆岩的岩石组合特征及其分布规律；确定东北地区早古生代变质杂岩的P-T-t演化轨迹；测定早古生代变质杂岩的原岩时代，变质变形时代的同位素年代学格架；建立同期岩浆岩的形成时代及其形成构造背景, 进而综合探讨东北地区早古生代构造运动的性质及其全球意义。研究成果对再造我国东北地区的构造格局、中亚造山带在早古生代构造演化历史等重大基础地质理论研究具有重要意义。

We suggest to research the Early-Paleozoic metamorphic complex, including both the Early-Paleozoic Khondalitic and magmatic rocks in this NSFC project, which will be very important to understanding the tectonic movement and its geodynamic setting of the NE China. In order to discussion the Nature of the Early-Paleozoic tectonic and its global tectonic setting, this project should be to search the rock assemblage and the regularities of distribution of the both Early-Paleozoic Khondalitic and magmatic rocks; confirming the P-T-t path of the Khondalitic rocks; determining chronological framework of the both protolith and metamorphic timing of the metamorphic complex; reconstruction the timing and tectonic setting of the Early-Paleozoic magmatic rocks. The result will be very important to reconstruction of the Tectonic framework in NE China, and the history of the Early-Paleozoic tectonic evolusion in the CAOB.