Szekessy Vilmos (szerk.): A Magyar Természettudományi Múzeum évkönyve 56. (Budapest 1964)
Csalogovits, J. I.: The non-magnetic derivation of Atlantic and Mediterranean rock-provinces and their connection with orogenic metamorphism
On basis of syntectonic palingene conception of alkaline province types, the understanding of crystallisation succession formations appear in another light, and at the same time it serves as an answer to some genetic problems giving raise to discussion. If a melt having been originally of a Pacific composition has been affected during crystallisation by water and Na + resp. K-assimilation (provided that in the latter case the metamorphite series are already in a dehydrated state owing to their state of compression) then the composition variation in successions following the assimilation effect and in consequence of the increase of the oxydation degree appearing as an effect of country-rock, the crystallisation succession of minerals takes place according to the agpailic (Na - H 2 0), resp. Fig. 4: Rocks of a Pacific alkaline-basaltic composure and a comparative diagram of Alpine orogene ophiolites (after Niggli, with new data) miascitic (K —Na; K) succession which is characteristic for alkaline magmatites and is deviating from intermixtures crystallized according to the initial Pacific BOWEN crystallisation succession i. e. the succession is of Pacific alkaline transient type. In such a case the augites may be fringed by a zone of egirinaugite-egirinediopside ; sodium amphibole and biotite is being formed ; in the leucratic succession part, on the other hand acidic plagioclase and sodium-sanidine, nephelin resp. primary zeolite is being separated out. Following the above, let us consider teh correlation among the sequences of succession. GERASIMOVSKY divides the nepheline-sienite types of alkaline rocks into two main groups: i. e. agpaitic and miascitic, characteristics of which are as follows:
