Abstract
To divulge plausible source for fluorine in the Upper Ladinian of the East Alpine geosyncline, two totally independent geochemical approaches have been made. They are (i) correlation study of the stratabound, stratiform, paleographic and regional fluorine anomalies observed in seven selected profiles of the carbonate sequences and (ii) comparative study of the distribution of rare earths (REE) in fluorspars from northern and southern Ladinian sequences. The fluorine anomalies in the entire East Alpine geosyncline were found to be confined only to a few horizons which could be stratigraphically correlated. The fluorspars of the Nördliche Kalkalpen showed REE distribution characteristic of a sedimentary formation while those of the Südliche Kalkalpen (Bleiberg area) apparently showed a hydrothermal type of REE distribution. These and various other considerations discussed in the present paper go to show that a relatively short-termed submarine exhalative source (volcanic) of a recurring nature in the Ladinian stage of the Mid-Triassic might have been plausibly responsible for the supply of fluorine found in the carbonate sequences of the East Alpine geosynclines. The noted stratigraphic correlation of fluorine anomalies suggested, in addition, that fluorine bearing layers could be used as temporaneous marker beds. An interesting side observation was that of the bi-to tri-modal fluorine distribution in four profiles which represented well mineralized areas in contrast to the unimodal fluorine distribution in the rest three profiles with no distinct zone of mineralization. Probably such a multimodal distribution of fluorine may be characteristic of the Pb-Zn deposits (or other ore bearing-units) in paragenesis, granted which, it may find application as proximity indicators of ore deposits.
Similar content being viewed by others
References
Bathurst, R G C.: Carbonate Sediments and their Diagenesis. 620 pp. (Elsevier) Amsterdam/New York (1971)
Brätter, P., Jacob, K.-H., Möller, P., Rösick, U.: Verteilungsmuster der Lanthaniden in Fluoriten der BleiZink-Lagerstätte Bleiberg in Österreich. Proc. 2. Intern. Symp. Mineral. Deposits Alps, GEOLOGIJA 15, 329–335, Ljubljana (1972)
Burger, I., Bleiberger Bergwerks Union, Arnoldstein: private communication (1972)
Fleischer, M., Robinson, W. O. (1963) reported by Koritnig (1969)
Frant, M. S., Ross, J. W: Electrode for Sensing Fluoride Ion Activity in Solution. SCIENCE 154, 1553–1555, Washington (1966)
Ivanov, V. V.: Principal Geochemical Environments and Processes of the Formation of Hydrothermal Waters in Regions of Recent Volcanic Activity. In: A. P. VINOGRADOV (Ed.), Chemistry of the Earth's Crust, Vol. II, 260–281, Israel Program for Scientific Translations, Jerusalem (1967)
Jacob, K -H.: Deutung der Genese von Fluoritlagerstätten anhand ihrer Spurenelemente — insbesondere an fraktionierten seltenen Erden. Ph. D. Thesis, Techn. Univ., Berlin (1974)
Kazakov, A. V., Sokolova, E. I.: Conditions for the Development of Fluorite in Sediments (Fluorite-System). Tr. Inst. geol. nauk Akad. Nauk SSSR 114, geol. Ser., 22–64, (1950) (Russian)
Koritnig, S.: Zur Geochemie des Fluors in den Sedimenten. Fortschr. Geol. Rheinld. Westf. 10, 231–238, Krefeld (1963)
— Fluorine, In: K. -H. Wedepohl (Ed.), Handbook of Geochemistry, Vol. II/1, 9-B-1–9–0–4, (Springer) Berlin/New York (1969)
Kranz, J. R.: Geochemische Charakteristik des erzhöffigen Oberen Wettersteinkalkes (alpine Mitteltrias) der Ostalpen. Ph. D. Thesis, Freie Univ., Berlin (1974)
— Stratiforme und diskordante Zink-Blei-Anomalien im erzhöffigen Oberen Wettersteinkalk (alpine Mitteltrias). Mineral. Deposita (Berl.) 11, 6–23, Berlin/New York (1976)
Lepeltier, C.: A simplified statistical treatment of geochemical data by graphical representation. Econ. Geol. 64, 538–550, New Haven (1969)
Maucher, A., Schneider, H.-J.: The Alpine lead-zinc ores. Econ. Geol., Monograph 3, 71–89, New Haven (1967)
Möller, P., Kubanek, F.: Role of magnesium in nucleation processes of calcite, aragonite and dolomite. N. Jb. Miner. Abh. 126, 199–220 Stuttgart (1976)
Möller, P., Parekh, P. P., Schneider, H.-J.: The Application of Tb/Ca-Tb/La Abundance Ratios to Problems of Fluorspar Genesis. Mineral. Deposita (Berl.) 11, 111–116, Berlin/New York (1976)
Pilger, A., Schönenberg, R.: Der erste Fund mitteltriadischer Tuffe in den Gailtaler Alpen (Kärnten). Z. dtsch. Geol. Ges. 110, 205–215, Hannover (1958/59)
Schneider, H.-J.: Die sedimentärer Bildung von Flußspat im Oberen Wettersteinkalk der nördlichen Kalkalpen. Abh. Bayer. Akad. Wiss., Math. -na-turw. Kl. 66, 37 pp., München (1954)
— Facies differentiation and controlling factors for the depositional lead-zinc concentration in the Ladinian geosyncline of the eastern Alps. In: G. C. Amstutz (Ed.), Sedimentology and Ore Genesis, 29–45, (Elsevier) Amsterdam/New York (1964)
Schneider, H. -J., Möller, P., Parekh, P. P.: Rare Earth Elements Distribution in Fluorites and Carbonate Sediments of the East-Alpine MidTriassic Sequences in the Nördliche Kalkalpen. Mineral. Deposita (Berl.) 10, 330–344, Berlin/New York (1975)
Seel, F., Steigner, E., Burger, I.: Ein neues Verfahren zur Fluorbestimmung. Angew. Chem. 76, 532–534, (1964)
Turekian, K. K., Wedepohl, K. H.: Distribution of the Elements in Some Major Units of the Earth's Crust. Geol. Soc. Am. Bull. 72, 175–191, New York (1961)
Zeller, M.: Tektonik, Gebirgsschläge und Vererzung im Blei-Zinkbergbau Raibl (Cave del Predil), Italien. Ph. D. thesis, Freie Univ., Berlin (1970)
Zimmer, E.: Zur Geochemie des Fluors im Oberen Wettersteinkalk (alpine Mitteltrias) der Ostalpen. Diplomarbeit, Freie Univ., Berlin (1976)
Author information
Authors and Affiliations
Additional information
Paper presented on the 23rd of August 1976 at the International Geological Congress, Sydney, N. S. W., Australia
Rights and permissions
About this article
Cite this article
Schneider, HJ., Möller, P., Parekh, P.P. et al. Fluorine contents in carbonate sequences and rare earths distribution in fluorites of Pb-Zn deposits in East-Alpine Mid-Triassic. Mineral. Deposita 12, 22–36 (1977). https://doi.org/10.1007/BF00204502
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00204502