Data for: Shock Metamorphic Effects in Feldspar in Martian Regolith Breccia: Measurement, Quantification, and Implications

This dataset supports the study "Shock Metamorphic Effects in Feldspar in Martian Regolith Breccia: Measurement, Quantification, and Implications." It includes data from various Martian regolith breccia samples, including NWA 7034_A and B, 7034_small_01A, 7034_small_01_thin, 7034_small_02A, 7034_small_02B, 7034_small_03, NWA 7475, NWA 8171_small, 8171_medium, 8171_big, and NWA 11220. The dataset is organized as follows:Spreadsheets (S1-S3):Spreadsheet S1 contains the analyzed results of micro-XRD for 149 plagioclase clasts and Raman data for 35 clasts examined in these meteorites. This spreadsheet includes the Full Width at Half Maximum (FWHMχ) values averaged along the χ direction (Debye rings) obtained from 2D XRD images for each analyzed target. Additionally, it provides the statistical information derived from these analyses. Furthermore, 35 of these 149 clasts were analyzed using Raman spectroscopy, and their relative intensities for characteristic Raman bands at ~478 cm⁻¹ and 508 cm⁻¹ are presented.Spreadsheet S2 presents the analyzed micro-XRD data for 21 alkali feldspar grains in these meteorites. Similar to S1, Spreadsheet S2 includes the averaged FWHMχ for each analyzed alkali feldspar target, along with the corresponding statistical information.Spreadsheet S3 provides the EPMA data for feldspar minerals in NWA 8171_small and NWA 8171_medium. These data correspond to Fig. S2a.Raw Data (10 folders for micro-XRD and 1 folder for Raman):Micro-XRD folders: Each folder corresponds to one Martian regolith breccia meteorite and contains the raw micro-XRD data of each analyzed plagioclase grain. The raw data is provided in two .gfrm files, representing two frames of 2D XRD images. Bruker EVA software was used to process the 2D XRD images. Full Width at Half Maximum (FWHM) values along the χ direction (Debye rings) can be obtained from these 2D XRD images for each analyzed target. Additionally, the data can be integrated into a conventional 1D XRD pattern plotting intensity versus 2θ angles for phase identification.Raman folder: This folder contains Raman data for the 35 plagioclase clasts examined in the study. The data is provided in .txt files, which were processed using Renishaw’s Raman WiRE™ software (www.renishaw.com/wire) to acquire the relative intensities for characteristic Raman bands at ~478 cm⁻¹ and 508 cm⁻¹.FWHMχ Measurement:The .gfrm files are used for peak width measurements along the Debye ring dimension (χ direction). As explained in methods section 2.2 in the manuscript, the intensity of diffracted X-rays as a function of the χ angle (i.e., along the Debye ring) is used for strain analysis. The analysis process is as follows:2D XRD images are integrated along the χ dimension using Bruker EVA software to obtain the intensity distribution corresponding to individual lattice reflections.The Full Width at Half Maximum (FWHMχ) of the resulting peak along the χ dimension is determined using Renishaw WiRE software. Multi-curve fitting is necessary for integrated X-ray distributions revealing multiple peaks (see Fig. 1).Finally, the cumulative FWHMχ values (ΣFWHMχ) are calculated to quantitatively characterize the shock level in each plagioclase grain.

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