Plate P3. Photomicrographs of plagioclase + diopside and plagioclase + amphibole veins in Hole 735B. 1.Fine-grained felsic vein with a band of green diopside along the center. Large light brown grain and smaller reddish grain are titanite. Matrix of the d

Plate P3. 2. Coarse-grained felsic vein with narrow band of green amphibole near center. Reddish brown grain is titanite (Sample 176-735B-170R-2, 15-21 cm). All scale bars = 1 mm.