Figure F78. Microstructural relations between dolerite and cataclasite (under crossed polars unless otherwise noted). A. Thin Section 81; Sample 345-U1415J-23R-1, 10–12 cm (Piece 3). Yellow boxes (tick marks show upward direction) indicate locations of B–E. B. Altered clast in cataclasite zone (plane-polarized light). C. Epidote clasts surrounded by chlorite in cataclasite zone. D. Boundary between clinozoisite and prehnite veins. E. Boundary between cataclasite and dolerite chilled margin.
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