Literatur
W. Kuhn andS. Vielhauer: Z. f. Physikal. Chemie, Vol. 202, p. 124–190, Leipzig 1953.
A. Rittmann:Some aspects of geosynclinal and deep sea volcanism. Boll. Volc., Tome XX (in print).
A. Rittmann:Orogénèse et Volcanisme. Arch. d. Sc. Genève, Vol. 4, p. 273, 1951.
The Moho-discontinuity and many geochemical facts can be explained easier by admitting a different origin of the Sima and the Sial. I consider the Sima to be crystallized primary olivine-basaltic magma, while I believe that the Sial derives from a pegmatitic upper-crust which has been precipitated from a primary pneumatosphere, then partially eroded, sedimentated and metamorphosed. See:A. Rittmann: Experientia, Vol. 3, Heft 8, Basel, 1947; and Schweiz. min. petr. Mitt., Vol. 28, p. 36, Zürich, 1948.
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Rittmann, A. Physico-chemical interpretation of the terms magma, migma, crust and substratum. Bull Volcanol 19, 85–102 (1958). https://doi.org/10.1007/BF02596599
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DOI: https://doi.org/10.1007/BF02596599