caa a22 4500 469064501 CHVBK 20180323132904.0 cr unu---uuuuu 170328e19920801xx s 000 0 eng 10.1007/BF00894234 doi (NATIONALLICENCE)springer-10.1007/BF00894234 Smakowski Tadeusz Institute of Geology and Mineral Deposits, University of Mining and Metallurgy, Cracow, Poland aut Geological prognosis of potential zinc and lead resources for Triassic formations in the Silesian-Cracow region in southern Poland [Elektronische Daten] [Tadeusz Smakowski] Geological prognosis of zinc and lead potential resources for Triassic formations was carried out for the Olkusz district in the southeast part of Silesian-Cracow region. Known deposits, typical phenomena in surrounding rocks, and quantitative methods for metallic ores for the perspective region or formation were a basis for the models. Statistical analysis of zinc and lead distributions and their interpretation were used to distinguish between the populations of background, anomalies, and ore bodies. Estimated values of the thresholds in the Triassic formations, i.e., 0.5 (anomalies) and 1.1 (ore bodies) wt. % of Zn, and 0.3 and 0.7 wt. % of Pb, respectively, represent the natural limits of concentration for both metals. Similar values of the thresholds obtained by other authors for other districts indicate regional regularities of zinc and lead concentration in the Triassic formations in the whole Silesian-Cracow region. Using these threshold values, the perspective zones of metals concentration can be proposed in the poorly explored areas of this region. In known deposits, the natural limit of zinc used as a cut-off value increase the reserves by about 30-40%. International Association for Mathematical Geology, 1992 Zn-Pb deposits nationallicence prediction nationallicence threshold values nationallicence perspective zones nationallicence Mathematical Geology Kluwer Academic Publishers-Plenum Publishers 24/6(1992-08-01), 693-703 0882-8121 24:6<693 1992 24 11004 https://doi.org/10.1007/BF00894234 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00894234 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Smakowski Tadeusz Institute of Geology and Mineral Deposits, University of Mining and Metallurgy, Cracow, Poland aut NATIONALLICENCE 773 0- Mathematical Geology Kluwer Academic Publishers-Plenum Publishers 24/6(1992-08-01), 693-703 0882-8121 24:6<693 1992 24 11004 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer