Figure F41. Orthopyroxene and plagioclase vein intruding troctolitic gabbro (Sample 345-U1415P-6R-2, 119–122 cm [Piece 14]; under crossed polars unless otherwise indicated). A. Dry core image. Red box (tick mark shows upward direction) indicates location of image in B. Plane-polarized light. B. Relatively coarse grained orthopyroxene and plagioclase vein appears to intrude along foliation and truncate grains of troctolitic gabbro. Red boxes indicate location of images C and D. C. Strong foliation defined by plagioclase crystals in olivine gabbro. The plagioclase crystals are elongate and partially annealed with scalloped grain boundaries. D. Strong foliation defined by elongate plagioclase crystals and small skeletal olivine crystals in olivine gabbro.
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