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Figure F191. A. Diabase dikelet in brittlely deformed gabbro (interval 305-U1309D-184R-3, 47–57 cm). Yellow box = location of B and C. B. Chilled margin of diabase (Sample 305-U1309D-184R-3, 50–53 cm) (plane-polarized light; field of view [FOV] = 2 cm). Minerals were fractured and fragmented along the margins of the dikelet. Yellow box = location of D. C. Same as B; cross-polarized light. Yellow box = location of E. D. Fragmented plagioclase grains with alteration mineral infilling (plane-polarized light; magnification = 2.5×). E. Same area as D; cross-polarized light.

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