Figure F6. Olivine-gabbro showing a cataclastic zone, also shown in Figure F8 (Thin Section 7; Sample 345-U1415H-1R-1, 0–4 cm [Piece 1]). Clinopyroxene (Cpx) was partially altered to amphibole (Amph) prior to cataclasis, whereas plagioclase (Plag) was partially replaced by zeolite (Ze) after cataclasis. Primary minerals are fractured and cut by a network of zeolite veins. Clasts of pyroxene and amphibole are isolated within zeolite veins. The acute angles of some of these clasts suggest a minimum of replacement prior to cementation by zeolite. A. Under crossed polars. B. Plane-polarized light.
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