Table 1. Plagioclase composition in Hole 900A metamorphosed cumulate gabbros.

Note: No good plagioclase analyses were obtained for Samples 82R-2, 106-111 cm; 84R-3, 124-129 cm; 84R-4, 123-126 cm, and 85R-1, 26-30 cm. * = thin sections only; no bulk chemical data are available for these samples. Recrystall = recrystallized, porphyro = porphyroclast, An = normative anorthite, Ab = normative albite, Or = normative orthoclase.