Figure F79. Lower hemisphere stereoplot showing poles to magmatic veins, alteration veins, and one crystal-plastic harzburgite foliation in Holes 1270C and 1270D. The individual pieces of the core are rotated to a common direction with paleomagnetic declination data as described in "Structures in Peridotite and Gabbroic Intrusions" in "Mantle Upwelling, Melt Transport, and Igneous Crustal Accretion" in the "Leg 209 Summary" chapter. The scatter in the orientation of the veins gives some indication of the anastomosing nature of the gabbroic vein network. The measured porphyroclastic foliation in harzburgite is from interval 209-1270D-6R-1 (Piece 4, 24–40 cm).