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Figure F110. Small trondhjemite veins within gabbro and olivine gabbro. A. Trondhjemitic felsic vein with subvertical jigsaw boundary fringed by coarse amphibole grains between gabbro. Amphibole is probably replacing primary clinopyroxene (interval 305-U1309D-216R-1, 53–83 cm). Red box = location of B, C. B. Sample 305-U1309D-216R-1, 73–76 cm (field of view = 2 cm; plane-polarized light). C. Same as B; cross-polarized light. D. Trondhjemitic felsic vein on olivine gabbro with obscure contact (interval 305-U1309D-262R-4, 68–87 cm). Red box = location of E, F. E. Sample 305-U1309D-262R-4, 84–87 cm (Field of view = 2 cm; plane-polarized light). F. Same as E; cross-polarized light.

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