Composition and depth of origin of prima
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D. C. Presnall; J. D. Hoover
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Article
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1984
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Springer
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English
β 982 KB
Some workers have held that mid-ocean ridge basalts are fractionated from high pressure (15-30 kbar) picritic primary magmas whereas others have favored primary magmas generated at about 10 kbar with compositions close to those of mid-ocean ridge basalts. Of critical significance are presumed differ