- OCEAN PLATEAU-SEAMOUNT ORIGIN OF BASALTIC ROCKS, ANGAYUCHAM
desine, prismatic clinopyroxene, skeletal ilmenite, and cuneiform plagioclase-quartz intergrowths Aggregates of chlorite and fer- rostilpnomelane of ca 1 mm diameter are scattered through the gabbro Olivine or its pseudomorphs is absent in all mafic rocks Peak metamorphism was to epidote- amphibolite facies, but the crystalline rocks responded sluggishly to it
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