Figure F53. Photomicrograph of cohesive carbonate-matrix fault breccia. Variable-sized clasts of serpentinite are contained in a fine carbonate matrix. Sheared, fibrous carbonate bands in the matrix indicate a tectonic origin for the breccia (Sample 209-1271B-3R-1, 51–54 cm) (plane-polarized light: blue filter; field of view = 2.75 mm; image 1271B

Figure F53. Photomicrograph of cohesive carbonate-matrix fault breccia. Variable-sized clasts of serpentinite are contained in a fine carbonate matrix. Sheared, fibrous carbonate bands in the matrix indicate a tectonic origin for the breccia (Sample 209-1271B-3R-1, 51–54 cm) (plane-polarized light: blue filter; field of view = 2.75 mm; image 1271B_105).