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Geology and metallogeny of the Drina-Ivanjica metamorphic complex in Eastern Bosnia - Western Serbia

This paper gives a critical review of all relevant, published works on the stratigraphy, tectonics, magmatism, metamorphism and metallogeny of the metamorphic complex of the Drina-Ivanjica Formation in eastern Bosnia-western Serbia. The author paid particular attention to all unresolved or controversial issues in geology and metallogeny of this area. The basic controversial geological problem is the question whether the Drina-Ivanjica Formation ends with the Drina Phyllitoid Formation of Upper Cambrian-Lower Carboniferous age, or underneath the aforementioned Phyllitoid Formation discordantly lies an older iron-bearing volcanogenic-sedimentary formation of Lower Cambrian-Vendian age. Based on a detailed analysis of all studied Caledonian and Cadomian metallogenies in Bosnia and Herzegovina, western Macedonia and Serbia, and their comparison with iron deposits of the Drina Formation, the author has considerably clarified the problem. As for controversial metallogenetic problems, the author focused on the number of ore horizons, their age, genetic type and commercial value. The author of this paper advocates the position that there exist only three ore horizons ; the first and the oldest, which represents liquid-magmatic segregation type with magnetite ; the second is SEDEX type of Fe-quartzites with two subhorizons: hematitic and magnetitic. Both ore horizons are bounded to the same volcanogenic-sedimentary formation. The third horizon is Carboniferous SEDEX type with hematite bounded to the Carboniferous volcanogenic-sedimentary formation.

eastern Bosnia; western Serbia; Drina-Ivanjica Formation; Neo-Proterozoic; Paleozoic; iron ore deposits; age and genetic types.

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