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Petrology of alkali basalts of Zlot, Timok Magmatic Complex (Eastern Serbia) |
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| Authors: | Dragan Milovanovi&#x; Stevan Karamata Miodrag Banje&#x;evi&#x; |
| Institution: | aFaculty of Mining and Geology, Dju?ina 7, 11000 Beograd, Serbia and Montenegro bSerbian Academy of Science and Arts, Knez Mihajlova 35, 11000 Beograd, Serbia and Montenegro cGeozavod-Gemini, Karadjordjeva 48, 11000 Beograd, Serbia and Montenegro |
| Abstract: | Alkali basalts were discovered in the Timok Magmatic Complex only in a borehole near Zlot. They are composed of plagioclase and clinopyroxene phenocrysts lying in intersertal to pilotaxitic groundmass. The characteristic feature of these rocks is the high content of needle shaped magnetite. Various disequilibrium features in alkali basalt of Zlot reflect complex convection effects and recharge, most probably in a shallow magma chamber. Major and trace elements data indicate that alkali basalts of Zlot originated from magmas deriving from metasomatized mantle wedge above a subducting and dehydrating plate. However the investigated rocks did not originate from primary magmas, but from a magma which has undergone considerable fractional crystallization. |
| Keywords: | Alkali basalts Calcic plagioclase Clinopyroxene Magnetite Timok Magmatic Complex Eastern Serbia |
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