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Figure F9. Brittle structures in orthopyroxene-bearing gabbro (Sample 345-U1415H-1R-1, 30–37 cm [Piece 7]; under crossed polars). A. Macroscopic character of cataclastic deformation. B. Thin section scan showing overview of cataclastic deformation. Red boxes outline locations of images in C–E. C. Fractured plagioclase crystal. D. Cataclastic deformation of clinopyroxene and plagioclase crystals showing angular-shaped clasts formed during fracturing, grain size reduction, and grain rotation. E. Zone of cataclasis cutting a deformed prehnite vein. This cataclastic zone shows small rounded clasts in a clay-filled matrix.

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