Figure F13. Photomicrographs of olivine gabbros. A. Intimate association of the high-temperature microscopic veins (HTMV) and the interfingering texture of clinopyroxene (Sample 176-735B-112R-2 [Piece 1, 64-66 cm]; cross-polarized light; field of view = 3.2 mm). The high-temperature microscopic vein is marked by discontinuous alignment of brown amphibole (Amp) in clinopyroxene (Cpx) in the lower left. The interfingering clinopyroxene (center) hosts the intergrowth (IfIg) and looks clear under the microscope. B. Clinopyroxene porphyroclast showing the interfingering texture in deformed olivine gabbro (Sample 176-735B-148R-1 [Piece 2, 104-112 cm]; cross-polarized light; field of view = 6.4 mm). Note the intergrowth (IfIg) of brown amphibole + orthopyroxene in clinopyroxene porphyroclast. (Continued on next page.)

Figure F13. Photomicrographs of olivine gabbros. A. Intimate association of the high-temperature microscopic veins (HTMV) and the interfingering texture of clinopyroxene (Sample 176-735B-112R-2 [Piece 1, 64-66 cm]; cross-polarized light; field of view = 3.2 mm). The high-temperature microscopic vein is marked by discontinuous alignment of brown amphibole (Amp) in clinopyroxene (Cpx) in the lower left. The interfingering clinopyroxene (center) hosts the intergrowth (IfIg) and looks clear under the microscope. B. Clinopyroxene porphyroclast showing the interfingering texture in deformed olivine gabbro (Sample 176-735B-148R-1 [Piece 2, 104-112 cm]; cross-polarized light; field of view = 6.4 mm). Note the intergrowth (IfIg) of brown amphibole + orthopyroxene in clinopyroxene porphyroclast. (Continued on next page.)