Figure F24. Microscopic cataclastic deformation structures. A. Cataclastic deformation in olivine-bearing gabbro showing grain size reduction, grain rotation, and angular-shaped clasts hosted in a fine clay(?)-rich matrix (Thin Section 20; Sample 345-U1415I-4R-2, 15–17 cm [Piece 3]; plane-polarized light). B, C. Thin Section 13 (Sample 345-U1415I-2R-1, 25–31 cm [Piece 7]; under crossed polars). B. Cataclastic deformation cutting host and a prehnite vein. C. Undeformed prehnite vein cutting a zone of cataclasis.
Previous | Close | Next | Top of page