Figure F96. A. Sharp contact between equigranular microgabbronorite and surrounding gabbronorite (interval 305-U1309D-165R-1, 37–57 cm). B. Sharp contact and little noticeable deformation in either microgabbronorite or wallrock (Sample 305-U1309D-165R-1, 44–47 cm) (cross-polarized light; field of view [FOV] = 2 cm). C. Sharp yet uneven contact between microgabbronorite and gabbronorite (Sample 305-U1309D-264R-1, 111–114 cm) (cross-polarized light; FOV = 2 cm). D. High-temperature plagioclase recrystallization along the microgabbronorite contact (Sample 305-U1309D-165R-1, 44–47 cm) (cross-polarized light; magnification = 2.5×).
Previous | Close | Next | Top of page