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
Th and U in both Minerals containing complex Zr, Ti anions, furthermore sodalite, lomonosovite etc. In our interpretation the agpaitic série has crystallised out of a system of lower compression (Na 2 0 —H 2 0), that is to say here Pk<p 0 and on the A index A> 1, the miascitic série has alkalinized from a metamorphite system of a higher compression, i. e. p n >p 0 and A<1. If we compare the agpaitic crystallisation succession of alkaline rocks (FERSMAN) with the Pacific type according to BOWEN, and when considering, these to be such marginal cases of succession at which the oxydation increase resp the alkaline emission attained the complete melt system still prior to the initial succession (agpaitic — miascitic succession) the rock remained throughout free from outward alkaline emission resp. from such.occuring during crystallisation (BowEN-type succession) and thus among these such a transient crystallisation succession may be intercalated at which the initial succession is Pacific (BOWEN) the terminating, however, agpaitic, alkaline (FERSMAN). We call this type of succession sopianitic, and the two aforementioned types — taken in the above sense — represent its marginal case. If the succession according to Bowen is indicated by a cp[ (P)a,b function, at which a denotes the correlation of leucratic and b the melanocratic minerals, the agpaitic-miascitic succession is similarly indicated by cp^A^'b'. If on a function for a ta <t a ; t bl <t bk period of time <p 2 (A) a /}j/ = 0, and from the t n —t k ^ 0 period of time lasting until the termination of the crystallisation in that case the rock follows the sopianitic crystallisation succession at which, owing to the increase of alkaline emission and the oxydation degree, the initial pacific succession was superseded by the agpaitic resp. in a dehydrated environnement, by a miascitic succession. With a view to the fact that the alkaline emission had in our conception been caused by orogenic compression, we may easily extend this effect on that case as well when the rock is already in a thermix equilibrum with the environment, thus it is of a firm consistency and the tectogenic effect is of the spilite type or it produces a calimetasomatic alkalinity. (For instance the synorogenic alkalinity if pre-orogenic pacific ophiolites). Naturally if during the full time of crystallisation cpi(P)at> = 0j resp. <p 2 (A) a ' b / = 0, in that case the succession is throughout agpaitic, resp. of the BowEN-type, at which in the first case the melt is already oxydized i. e. no outside effect (oxydization and alkalinization) has affected it during crystallisation. On these grounds that assumption of ours appears to be justified that the <PÍ(P)ab + ?2(A)a'b' = <Pn(S)aa'bb' <P 2 '( A )a'b' * 0 Agpaitic series Na 2 0+K 2 0/Al 2 0 3 > 1 Na> K Fe 2 0 3 =• FeO much Zr, Ti, Nb and Ta C1>F H 2 0 much little" Ca much Sr Miascitic series Na 2 0 + K 2 0/Al 2 0 3 s 1 some times K>Na mostly FeO > Fe 2 0 3 little Zr, Ti, Nb and Ta F>C1 C0 2 much much Ca
