This dataset is supplemental to the paper Wiesman et al. (In prep) and contains data on the density of dislocations and their stress fields in olivine from laboratory experiments to examine transient creep in olivine. The data were used to characterize the microstructural evolution that occurs during transient creep in olivine. These results can be used to test and calibrate microphysical models for transient creep that will be used to describe how Earth’s mantle responds to changes in stress caused by earthquakes and as melting glaciers.
Data are provided in a zip folder and include:
• Mechanical data from each experiment: ten .txt files of raw data, ten .txt files of processed data
• Measurements of lattice orientation via EBSD: ten .ctf files of large area EBSD maps and ten .ctf files of regions mapped with HR-EBSD
• Densities of geometrically necessary dislocations from the HR-EBSD analysis – ten .txt files of processed data
• Residual stress heterogeneity also determined from HR-EBSD analysis – 20 .txt files of processes data
• Forescatter electron images of decorated dislocations – 49 .tiff files and 49 .png files of decorated dislocations, 44 .pngs of counted dislocations, and one .txt file documenting the counted dislocations
Data types and sample numbers are also indicated in the file names. Files are organized into folders by sample. Data types and sample numbers are also indicated in the file names. A full description is available in the data description file.
This dataset is supplemental to the paper Wiesman et al. (submitted) and contains data on the density of dislocations and their stress fields in olivine rocks deformed via laboratory experiments. The data were used to investigate how the quality of diffraction patterns obtained via electron backscatter diffraction (EBSD) affect the stress maps and geometrically necessary dislocation (GND) maps obtained via analysis with high-angular resolution electron backscatter diffraction (HR-EBSD). These results can be used to optimize the patterns collected during EBSD to reduce noise in the HR-EBSD analysis.
Data are provided in a zip folder and include:
• Measurements of lattice orientation via EBSD: six raw .ctf files and six processed .ctf files of regions mapped with HR-EBSD
• Examples of electron backscatter diffraction patterns used to calculate radial power spectra: 12 .tiff files of diffraction patterns
• Densities of geometrically necessary dislocations from the HR-EBSD analysis: six .txt files of processed data
• Residual stress heterogeneity also determined from HR-EBSD analysis: six .txt files of processed data
Data types and the number of frames averaged are also indicated in the file names. Files are organized into folders by the number of frames averaged. A full description is available in the data description file.
This dataset is supplemental to the paper Wallis et al. (2019) and contains data derived from distortion of crystal lattices measured using conventional electron backscatter diffraction (EBSD) and high-angular resolution electron backscatter diffraction (HR-EBSD). The datasets include lattice misorientation, elastic-strain heterogeneity, residual-stress heterogeneity, and densities of geometrically necessary dislocations in olivine and quartz. We intend the data and associated paper to demonstrate key aspects of the HR-EBSD technique and to draw comparisons with conventional EBSD. As the paper by Wallis et al. (2019) is a review paper, several of the datasets have also been present in, or are otherwise related to, additional previous publications listed below .Data are provided as 55 tab delimited .txt files organised by the figure in which they appear within Wallis et al. (2019). Data types are indicated in the file names. Please consult the data description file for detailed explanations.