Figure F48. Cataclastic zone at contact with clast of chilled basalt (cataclastic massive unit) (Sample 309-1256D-117R-1 [Piece 12, 122–125 cm]). A. Core piece and thin section. B. Detail of thin section. Inset shows the crosscutting relationships between different events of veining (1 is the oldest); protocataclasite (protoc) and cataclasite are cut by ultracataclasite (ultracat) and gouge veins (plane-polarized light, blue filter; field of view = 10 mm).