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.gfrm files for uXRD data collected for "Quantitative Evaluation of Shock Metamorphism in Clinopyroxene Using in situ X-ray Diffraction Measurement of Lattice Strain"

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Zenodo2026-07-01 更新2026-08-01 收录
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X-ray diffraction (XRD) patterns for the study “Quantitative Evaluation of Shock Metamorphism in Clinopyroxene Using in situ X-ray Diffraction Measurement of Lattice Strain.” XRD patterns were collected from select targets in three Martian meteorites (Allan Hills (ALHA) 77005, Nakhla, and Zagami), as well as from three sets of experimentally shocked terrestrial clinopyroxene (cpx) samples (A0, A1, A2, B0, B3, C0, and C1). A0, B0, and C0 are unshocked, with A0 and C0 being a monomineralic cpx samples and B0 being a gabbro from the Bushveld Igneous Complex (BIC). A1 and A2 are monomineralic cpx samples that were shocked at 8 GPa and 22 GPa, respectively, with a light gas gun at the University of Kent. B3 is BIC gabbro from the shocked to 50 GPa by a flat plate accelerator (FPA) for another study (Meyer et al. 2011. Meteoritics & Planetary Sciences, 46: 701-718). C1 is monomineralic diopside shocked to 27 GPa by FPA at the Experimental Impact Laboratory at the National Aeronautics and Space Administration Johnson Space Centre. XRD patterns for all samples were collected using an in situ micro X-ray diffractometer equipped with a Co kα source and an area detector from targets on intact unpowdered samples. Data was collected using General Area Detector Diffraction System (GADDS) software. They are not powder patterns. For more information regarding in situ micro XRD please see Flemming (2007. Canadian Journal of Earth Sciences, 44: 1333-1346). Data for each target is presented as two .gfrm files. The .gfrm files are two overlapping frames of 2-D XRD patterns that can be processed with the relevant software (e.g., GADDS, DIFFRACplus.EVA). The .gfrm files can be integrated into full XRD diffraction patterns or can used to isolate individual XRD peaks for peak width measurements. This work measured peak widths in 2θ for single peaks that matched exclusively cpx. Peak widths were measured as integral breadth. Lists of peaks measured in 2θ for each target for the study is in the attached guide.

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2026-07-01
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