Figure F28 (continued). B. Layering showing modal variability in gabbro of felsic and mafic phases. Upper part of mafic layer slightly affected by deformation (close-up core photograph of interval 60, 179-1105A-13R-1, 59-75 cm [Piece 3C]). Also note prominent oxide gabbro layer at the base (interval 66-71) that parallels more subtle mafic-felsic layering above.