Figure F19. Photograph of interval 187-1162B-5R-1, 41-49 cm, showing the dolomite-cemented basalt breccia. The large clasts are highly to very highly altered basalt, dissected by 1- to 2-mm-wide veins of crystalline dolomite. Palagonite clasts have distinct concentric layers. Note that the breccia matrix consists of two generations: early pale pink dolomite, cut by later veins of crystalline dolomite. Mn oxide spots are associated only with the first-generation dolomite.