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The system CaO-MgO-FeO-SiO2 and its bearing on the origin of ultrabasic and basic rocks

Published online by Cambridge University Press:  14 March 2018

Peter J. Wyllie
Peter J. Wyllie*
Affiliation:
School of Chemistry, University of Leeds
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Summary

Experimental data in the system CaO-MgO-FeO-SiO2 suggest that there may be a plateau on the liquidus and solidus of the multicomponent system basalt-peridotite. If this is so, fusion of peridotite would produce only basaltie magmas over a wide temperature range; when the temperature reached a value such that the liquid crossed the threshold of the plateau, there would be a rapid increase in the amount of fusion for small temperature increases, with the formation of picritic magmas; basaltic magmas containing suspended forsteritic olivine crystals could dissolve them if the temperature rose slightly above that of the plateau threshold; a high proportion of a picritic magma would crystallize in a small temperature interval, with the precipitation of forsteritic olivine that was only slightly zoned. These possibilities are compared with current theories, and it is concluded that several petrological axioms may require critical re-examination. An experimental procedure is outlined to determine the shape of the liquidus and solidus in the basalt-peridotite system.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 32 , Issue 249 , June 1960 , pp. 459 - 470
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1960

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References

Bowen, (N.L.), 1928. The Evolution of the Igneous Rocks. Princeton University Press (new edn, 1956. Dover publications, New York).Google Scholar
Bowen, (N.L.), and Schairer, (J.F.), 1935. Amer. Journ. Sci., vol. 29, p. 151.Google Scholar
Bowen, (N.L.), and TUTTLE (O.F.), 1949. Bull. Geol. Soc. Amer., vol 60, p. 439.CrossRefGoogle Scholar
Brown, (G.M.), 1956. Phil. Trans. Roy. Soc., ser. B, vol. 240, p. 1.Google Scholar
Daly, (R.A.), 1933. Igneous Rocks and the Depths of the Earth. McGrawrHill Book Co., New York.Google Scholar
Drever, (H.I.), 1952. Medd. Dansk Geol. Forening, vol. 12, p. 227.Google Scholar
Drever, (H.I.), 1956. Medd. Gronland, vol. 137, no. 4.Google Scholar
Drever, (H.I.), 1960. Immiscibility in the Picritic Intrusion at Igdlorssuit. Manuscript submitted to 21st Internat. Geol. Congr., Copenhagen.Google Scholar
Drever, (H.I.), and JOHNSTOn (R.), 1957. Trans. Roy. Soc. Edin., vol. 63, p. 289.CrossRefGoogle Scholar
Drever, (H.I.), 1958. Ibid., p. 459.Google Scholar
Green, (J.) and Poldervaart, (A.), 1955. Geochimica Acta, vol. 7, p. 177.CrossRefGoogle Scholar
Harker, (A.), 1904. The Tertiary Igneous Rocks of Skye. Mem. Geol. Surv. U.K.Google Scholar
Harker, (A.), 1909. The Natural History of Igneous Rocks. MacMillan Co., New York.Google Scholar
Hess, (H. H.), 1938. Amer. Journ. Sci., vol 35, p. 321.Google Scholar
Hess, (H. H.), 1955. Geol. Soc. Amer. Spec. Paper 62, p. 391.Google Scholar
Kennedy, (W.Q.), 1933. Amer. Journ. Sci., vol. 25, p. 239.Google Scholar
Kennedy, (W.Q.), and Anderson, (E.M.), 1938. Bull. Volcan., ser. 2, vol. 3, p. 23.Google Scholar
Osborn, (E.F.), 1954. Regional Technical Meetings, p. 145. Amer. Iron and Steel Inst., New York.Google Scholar
Osborn, (E.F.), Devries, (R.C.), Gee, (K.G.), and Kraner, (H.M.), 1954. Trans. Amer. Inst. Mining Met. Engrs., vol. 200, p. 33.Google Scholar
Osborn, (E.F.), Devries, (R.C.), Gee, (K.G.), and Kraner, (H.M.), and Tait, (D.B.), 1952. Amer. Journ. Sci., Bowen vol, p. 413.Google Scholar
Powers, (H.A.), 1955. Geochimica Acta, vol. 7, p. 77.CrossRefGoogle Scholar
Ricker, (R.W.), 1952. Phase Equilibria in the Quaternary System CaO-MgO-FeOSiO2 . Ph.D. dissertation, College of Miner. Indust., Pennsylvania State University.Google Scholar
Turner, (F.J.) and Verhoogen, (J.), 1951. Igneous and Metamorphic Petrology. McGraw-Hill Book Co., New York.Google Scholar
Vogt, (J. H. L.), 1922. Journ. Geol., Chicago, vol 30, p. 659.Google Scholar
Wager, (L.R.), 1956. Geochimica Acta, vol 9, p. 217.Google Scholar
Wylue, (P.J.), 1958a. Experimental and Petrological Investigations of Some Magmatic Phenomena. Ph.D. thesis, University of St. Andrews.Google Scholar
Wylue, (P.J.), 1958b. Trans. Amer. Geophys. Union, vol. 39, p. 536.Google Scholar
Yoder, (H.S.) and Tilley, (C.E.), 1956. Carnegie Inst. Washington Year Book 55, p. 169.Google Scholar
Yoder, (H.S.) and Tilley, (C.E.), 1957. Carnegie Inst. Washington Year Book 56, p. 156.Google Scholar