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Formation of anorthosite-Gabbro rhythmic phase layering: an example at North Arm Mountain, Bay of Isands ophiolite

January 1, 1990

Rhythmically layered anorthosite and gabbro are exposed in a 4–10-m thick interval at the base of the layered gabbro unit on North Arm Mountain, one of four massifs that compose the Bay of Islands ophiolite, Newfoundland. Within the rhythmically layered interval, up to 37 anorthosite layers 1–2 cm thick alternate with gabbroic layers 7–10 cm thick. Anorthosites are adcumulates (most contain

Publication Year 1990
Title Formation of anorthosite-Gabbro rhythmic phase layering: an example at North Arm Mountain, Bay of Isands ophiolite
DOI 10.1093/petrology/31.1.1
Authors S.C. Komor, D. Elthon
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Petrology
Index ID 70016308
Record Source USGS Publications Warehouse
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