Petrographical study of subvolcanic rocks surrounding of Mórágy and Ófalu (SE-Transdanube, Hungary)
Rock types described as bostonites by MAURJTZ and CSAIÁGHY (1952), JANTSKY (1972) are characterized in this paper. They can be subdivided into two groups: (I) Light-reddish, brownish-coloured, fine-grained rock characterized by trachytic texture with potassium feldspar microlites in the groundmass s...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
University of Szeged, Department of Mineralogy, Geochemistry and Petrology
Szeged
1995
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| Sorozat: | Acta mineralogica-petrographica
36 |
| Kulcsszavak: | Kőzettan, Ásványtan, Földtan |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/24828 |
| Tartalmi kivonat: | Rock types described as bostonites by MAURJTZ and CSAIÁGHY (1952), JANTSKY (1972) are characterized in this paper. They can be subdivided into two groups: (I) Light-reddish, brownish-coloured, fine-grained rock characterized by trachytic texture with potassium feldspar microlites in the groundmass showing a subparallel arrangement among K-feldspar phenochrysts forming by flow parallely with the wall-rock. This type occurs only in dykes which penetrate the granite mass. On the basis of petrographical examinations this group is classified as alkalitrachyte. (2) Greenish, greyish-coloured, fine-grained rock characterized by a microholocrystalline. porphyritic texture. It forms a small laccolith-like subvolcanic body in the quarry of Kismórágy No. 5. and like a centre, dykes run from here to every directions. On the basis of petrographical examinations this group is classified as trachyandesite (or latite). |
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| Terjedelem/Fizikai jellemzők: | 129-142 |
| ISSN: | 0365-8066 |