Data of experimental investigation on the brittle-ductile transition of natural mafic granulite

The data set contains corrected stress-strain data of natural mafic granulite samples experimentally deformed in triaxial compression at temperatures of 950 – 1150°C and a confining pressure of 300 MPa, at varying strain rates between 10-4 s-1 and 10-6 s-1, and other relevant data of the figures in the paper. Depending on the applied conditions, which are nominally in the semi-brittle and ductile deformation regimes of mafic granulite, we observed the deformation characteristics of the brittle-ductile transition of natural mafic granulite. The experiments were performed on the cylindrical samples using a gas (argon) confining medium apparatus at State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing, China.
The zip-file ‘Data’ contains the raw data files recorded during deformation experiments. The calculated stress–strain data is show in the excel file named after Stress-Strain.xlsx. The zip-file ‘FTRdata’ contains the raw data files were measured by Fourier transform infrared spectroscopy. Major element compositions of mineral grains show in the word file named after EPMA.docx. Grain sizes show in the excel file named after gain size.xlsx. The zip-file ‘EBSD’ contains the EBSD results.

本数据集收录了自然基性花岗岩样品在950至1150摄氏度温度以及300 MPa围压条件下，于不同应变率（介于10^-4 s^-1至10^-6 s^-1）下经三轴压缩实验得到的修正应力-应变数据。数据集还包含了论文中图表的相关其他数据。根据施加的实验条件，这些条件通常位于基性花岗岩的半脆性和韧性变形区域，本研究观察到了自然基性花岗岩的脆-韧性转变特征。实验在圆柱形样品上使用氩气作为围压介质的装置进行，该装置位于中国地震局地球动力学国家重点实验室、中国地震局地质研究所，北京市，中国。

‘Data’压缩文件包含了变形实验过程中记录的原始数据文件。计算得到的应力-应变数据展示在名为‘Stress-Strain.xlsx’的Excel文件中。‘FTRdata’压缩文件包含了通过傅里叶变换红外光谱法测量的原始数据文件。矿物颗粒的主要元素组成展示在名为‘EPMA.docx’的Word文件中。晶粒尺寸数据则展示在名为‘gain size.xlsx’的Excel文件中。‘EBSD’压缩文件包含了EBSD分析结果。