Máthé Zoltán; Szakmány György: The genetics (formation) of rhyolite occurring in the Rudabánya Mts. (NE Hungary), on the basis of REE and other trace elements. In: Acta mineralogica-petrographica, (31). pp. 43-55. (1990)
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Absztrakt (kivonat)
The authors performed a genetical investigation on the rhyolite occurring in the Rudabánya Mts., previously studied from a mineralogical-petrographical aspect using data on rare earth element composition as well as other trace elements. Measurements were performed using neutron activation analysis completed by — in case of some elements — quantitative spectroscopical analysis. Based on the result of the measurements the rocks were assigned to four groups by the help of cluster analysis. On the basis of the relations of incompatible and less incompatible elements they could observe that the rhyolite was formed partly by a partial melting of the crust and partly by differentiation processes within the magma chamber. The considerable negative anomaly of Eu encountered is explained by fractionation of the plagioclase, i.e., this fact would equally support that the rock was formed from differentiated remnants of the melted rocks. The triangular diagram of Th-Ta-Hf/3 (which can be effectively used for acidic rocks as well) indicates that the formation of the rhyolite can be connected to the volcanism of a plate margin being consumed (subduction). The authors could observe in one sample an essential enrichment in U, Y and lanthanids caused by, according to their investigation, a considerably high fluor-apatite content.
| Mű típusa: | Cikk, tanulmány, mű |
|---|---|
| Befoglaló folyóirat/kiadvány címe: | Acta mineralogica-petrographica |
| Dátum: | 1990 |
| Kötet: | 31 |
| ISSN: | 0365-8066 |
| Oldalak: | pp. 43-55 |
| Nyelv: | angol |
| Kiadó: | University of Szeged, Department of Mineralogy, Geochemistry and Petrology |
| Kiadás helye: | Szeged |
| Befoglaló mű URL: | http://acta.bibl.u-szeged.hu/39409/ |
| Kulcsszavak: | Kőzettan, Ásványtan, Földtan |
| Megjegyzések: | Bibliogr.: p. 54-55. ; ill. ; összefoglalás angol nyelven |
| Szakterület: | 01. Természettudományok 01. Természettudományok > 01.05. Föld- és kapcsolódó környezettudományok |
| Feltöltés dátuma: | 2016. okt. 17. 09:25 |
| Utolsó módosítás: | 2022. júl. 26. 15:30 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/24782 |
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