Summary
The mass-spectrometric analyses of carbonates from the Pb-Zn ore deposit Mežica show enrichment with light O and C isotopes in Ladinian limestones in the immediate surroundings of post-Triassic unconformable orebodies in the system of Union faults. In general, a gradual drop of the δO18 and δC13 values towards orebodies can be observed. The Ladinian limestones and dolomites adjacent to strata-bound orebodies of Triassic age in Mežica, and Anisian dolomites in the Pb-Zn deposit Topla, however, do not show systematic change in the O and C isotopic composition.
The isotopic composition of O and C in altered limestones close to unconformable orebodies, in limestone fragments of mineralized breccia and in calcite from ore indicates, that ore was probably deposited from low-temperature solution of non-magmatic origin. It is supposed that these solutions removed components of ore minerals from surrounding rocks, or from older ores into the system of Union faults.
Zusammenfassung
Die massenspektrometrische Isotopenanalyse der Karbonate von Mežica Pb-Zn Erzen ergibt für Ladinische Kalksteine in der unmittelbaren Umgebung der Post-Triassischen diskordanten Erzkörper des Union-Bruch-Systems eine Anreicherung der leichten O- und C-Isotope. Im allgemeinen konnte eine allmähliche Abnahme der δO18- und δC13 -Werte gegen die Erzkörper festgestellt werden. Im Gegensatz dazu zeigen Ladinische Kalksteine und Dolomite in Mežica, bzw. Anisische Dolomite der Pb-Zn Lagerstätte Topla, die sich unmittelbar an schichtgebundenen Erzen der Trias befinden, keine systematische Unterschiede in der O- und C-Isotopenzusammensetzung.
Die abgeänderte O- und C-Isotopenzusammensetzung der Karbonate an diskordanten Erzkörpern, in Kalksteinfragmenten der vererzten Breccien und im Kalzit der Erzkörper, deuten auf eine Ausscheidung des Erzes aus Tieftemperatur-Lösungen nicht-magmatischer Herkunft.
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References
Craig, H. (1957) Isotopic standard for carbon and oxygen and correction factors for mass-spectrometric analysis of carbon dioxide. Geochim. Cosmochim. Acta 12: 133–149
Craig, H. (1961) Standard for reporting concentrations of deuterium and oxygen-18 in natural waters. Science 133: 1833–1834
Drovenik, M., Leskovšek, H., Pezdič, J., Štrucl, I. (1970) Izotopska sestava žvepla v sulffidih nekaterih jugoslovanskih rudišč. Min. Met. Q. 2–3: 153–173
Drovenik, M., Štrucl, I., Pezdič, J. (1980) Sulfur isotope composition in the lead-zinc ore deposit of the Northern Karavanke. Min. Met. Q. 2–3: 179–197
Grinenko, V.A., Zairi, N.M., Šadlun, T.N. (1974) Poligennaja priroda globuljarnyh sulfidov it stratiformnih mestaroždenijah. Geol. Rudnyh mestorož. ( Moskva ) 1: 66–77
Štrucl, I. (1965) Geološke značilnosti mežiških rudišč in njih okolice. Zbomik 300 let mežiški rudniki (Mežica)
Štrucl, I. (1971) On the geology of the eastern part of the Northern Karawankes with special regard to the triasic Lead-Zinc Deposits. VIII. Int. Sed. Congress (Heidelberg), p. 285–301
Štrucl, I. (1974) Nastanek karbonatnih kamenin in cinkovo-svinceve rude v anizičnih plasteh Tople. Geologija 17: 299–398
Zorc, A. (1955) Mining geological features of the Mežica ore deposit. Geologija 3: 24–80
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© 1983 Springer-Verlag Berlin Heidelberg
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Dolenec, T., Kušej, J., Pezdič, J. (1983). The Isotopic Composition of Oxygen and Carbon in Lead and Zinc Deposits from Northern Karavanke. In: Schneider, HJ. (eds) Mineral Deposits of the Alps and of the Alpine Epoch in Europe . Special Publication No. 3 of the Society for Geology Applied to Mineral Deposits, vol 3. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-68988-8_20
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