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Figure F40. Gabbro with no magmatic foliation (under crossed polars). A. Olivine gabbro with isotropic fabric (Sample 345-U1415P-3R-1, 120–123 cm [Piece 20A]). Red box (tick mark shows upward direction) indicates location of image in C. B. Sutured boundary (red dashed line) between isotropic orthopyroxene-bearing gabbro (left) and olivine-bearing gabbro with weak magmatic foliation (right) (Sample 345-U1415P-4G-1, 10–13 cm [Piece 3]). Red box indicates location of image in D. C. Plagioclase deformation twins, undulose extinction, and locally developed subgrains. D. Deformation twins in a bent plagioclase grain.

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