中国东部下地壳由中性麻粒岩和基性麻粒岩组成，麻粒岩流变实验数据比较少。本项目拟采用天然的和热压合成的细粒中性麻粒岩和基性麻粒岩样品，在干燥和含水条件下，在气体介质三轴流变仪上开展高温高压流变实验，获得中国东部下地壳两种麻粒岩的干样品和含水样品的流变参数；利用扫描电镜与电子背散射、透射电镜、电子探针等，研究实验样品主要矿物的变形微观结构与变形机制、样品的成分特征；利用傅里叶变换红外光谱仪测定实验样品中微量水的含量，定量研究微量结构水对麻粒岩流变的影响。分析中性和基性麻粒岩的流变参数、流变强度、变形机制及其影响因素。与近年来已经取得的下地壳单相-两相矿物集合体和岩石流变实验比较，讨论多相矿物麻粒岩流变的复杂性，并利用实验结果研究中国东部地区下地壳的流变结构。本研究能够为深入认识大陆下地壳麻粒岩流变的复杂多样性、强震孕育的环境和大陆动力学等方面提供必要的实验数据。

The upper lower crust in eastern China is consisted by intermediate granulite,and composition of lower most crust is mafic granulite.The creep data of granulite are very limit. The project plans to perform creep tests in gas medium traxial mechine under high temperature condition using natural and hot-pressed fine-grained intermediate and mafic granulite samples, and get the flow laws of continental lower crustal granulite constituted by multi-mineral phases in dry and wet conditions. To study the deformation mechanisms of major minerals, microstructures and chemical composition in experimental deformed samples should be analyzed under SEM, EBSD, TEM and microprobe. The trace water of major minerals in starting and deformed samples will be measured using Fourier-transform infrared spectrometer (FTIR). Effects of trace water to rheology of intermediate and mafic granulite could be quantitatively determined. Compared with creep tests data of mineral aggregations and rocks published in recent years, effects of multi-mineral phase in granulite rheology can be analyzed. Finally, we hope to give the rheological profiles of lower crust in eastern of China. The project can supply essential experimental data for study complexity of rheolgy in lower crust, seismogenic environment and continental dynamics.