Geochemical/isotopic evolution of Pb–Zn deposits in the Central and Eastern Taurides, Turkey (original) (raw)

Abstract

The Central and Eastern Taurides contain numerous carbonate-hosted Pb-Zn deposits, mainly in Devonian and Permian dolomitized reefal-stramatolitic limestones, and in massive Jurassic limestones. We present and compare new fluid inclusion and isotopic data from these ore deposits, and propose for the first time a Mississippi Valley-type (MVT) mode of origin for them. Fluid inclusion studies reveal that the ore fluids were highly saline (13-26% NaCl equiv.), chloride-rich (CaCl 2) brines, and have average homogenization temperatures of 112°C, 174.5°C, and 211°C for the Celal Dag, Delikkaya, and Ayrakl0 deposits, respectively. Furthermore, the d 34 S values of carbonate-hosted Pb-Zn deposits in the Central and Eastern Taurides vary between-5.4‰ and +13.70‰. This indicates a possible source of sulphur from both organic compounds and crustal materials. In contrast, stable sulphur isotope data (average d 34 S-0.15‰) for the Çad0rkaya deposit, which is related to a late Eocene-Oligocene (?) granodioritic intrusion, indicates a magmatic source. The lead isotope ratios of galena for all investigated deposits are heterogeneous. In particular, with the exception of the Suçat0 district, all deposits in the Eastern (Delikkaya, Ayrakl0, Denizovas0, Çad0rkaya) and Central (Katranbas0, Küçüksu) Taurides have high radiogenic lead isotope values (206 Pb/ 204 Pb between 19.058 and 18.622; 207 Pb/ 204 Pb between 16.058 and 15.568; and 208 Pb/ 204 Pb between 39.869 and 38.748), typical of the upper continental crust and orogenic belts. Fluid inclusion, stable sulphur, and radiogenic lead isotope studies indicate that carbonate-hosted metal deposits in the Eastern (except for the Çad0rkaya deposit) and the Central Taurides are similar to MVT Pb-Zn deposits described elsewhere. The primary MVT deposits are associated with the Late Cretaceous-Palaeocene closure of the Tethyan Ocean, and formed during the transition from an extensional to a compressional regime. Palaeogene nappes that typically limit the exposure of ore bodies indicate a pre-Palaeocene age of ore formation. Host rock lithology, ore mineralogy, fluid inclusion, and sulphur+ lead isotope data indicate that the metals were most probably leached from a crustal source such as clastic rocks or a crystalline massif, and transported by chloride-rich hydrothermal solutions to the site of deposition. Localization of the ore deposits on autochthonous basement highs indicates long-term basinal fluid migration, characteristic of MVT depositional processes. The primary MVT ores were oxidized in the Miocene, resulting in deposition of Zn-carbonate and Pb-sulphatecarbonate during karstification. The ores underwent multiple cycles of oxidation and, in places, were re-deposited to form clastic deposits. Modified deposits resemble the 'wall-rock replacement' and the 'residual and karst fill' of non-sulphide zinc deposits and are predominantly composed of smithsonite.

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References (58)

  1. Alp, C., 1976, Hadim Yöresinin Maden Jeolojisi ve Pb-Zn Etütleri Ön Raporu: Ankara, MTA Raporu, no: 574, 38 p.
  2. Ayhan, A., 1983, Aladag (Yahyal0-Çamard0) Yöresi Karbonatl0 Çinko-Kursun Yataklar0. TJK Bülteni, v. 26, p. 107-116.
  3. Ayhan, A., 1984, Genetic comparison of lead-zinc deposits of Central Taurus, in Tekeli, O., and Göncüoglu, M.C., eds., Geology of the Taurus belt. Proceedings: General Directorate of Mineral Research and Exploration Ankara, p. 335-342.
  4. Ayhan, A., and Lengeranl0, Y., 1986, Yahyal0-Demirkaz0k (Aladaglar Yöresi) Aras0n0n Tektonos- tratigrafik Özellikleri: Jeoloji Mühendisligi, v. 27 (Nisan-1986), p. 31-45.
  5. Ayhan, A., Lengeranl0, Y., Çeltek, N., and Aksoy. E., 1984, Aladaglar (Bat0 Zamant0) Yöresi (Yahyal0-Çamard0) Jeolojisi ve Kursun-Çinko Etüdleri, MTA Rapor No: 1483, 112 p. MTA Ankara.
  6. Bakker, R.J., 1999, Optimal interpretation of microthermometrical data from fluid inclusions: Thermo- dynamic Modelling and Computer Programming. http://www.unileoben.ac.at/∼buero62/minpet/ ronald/Habilitation/Computer.html.
  7. Bethke, C.M., and Marshak. S., 1990, Brine migration across North America -The plate tectonics of groundwater: Annual Review of Earth Planet Science, v. 18, p. 228-315
  8. Blumenthal, M.M., 1941, Nigde ve Adana vilayetleri dahilinde Toroslar'0n jeolojisine umumi bak0s: Ankara, MTA Enst., no. 6, p. 48 p.
  9. Blumenthal, M.M., 1944, Bozk0r güneyinde Toros s0radaglar0n0n serisi ve yap0s0: I.Ü. Fen Fak. Mec., Seri B, v. 9, no. 2, pp. 95-125.
  10. Blumenthal, M.M., 1947, Belemedik Paleozoyik penceresi ve bunun Mesozoyik kalker çerçevesi: Ankara, MTA Enst., no. 3, 39 p. Blumenthal, M.M., 1952, Das taurische Hochgebirge des Aladag, neuere Forschungen zur seiner Geographie, Stratigraphie und Tektonik: Ankara, MTA Yay0nlar0, Seri D, v. 6, 136 p.
  11. Bodnar, R.J., 1993, Revised equation and table for determining the freezing point depression of H 2 O-NaCl solutions: Geochimica et Cosmochimica Acta, v. 57, p. 683-684.
  12. Carpenter, A.B., Trout, M.L., and Pickett, E.E., 1974, Preliminary report on the origin and chemical evolution of lead and zinc-rich oilfield brines in Central Mississippi: Economic Geology, v. 69, p. 1191-1206.
  13. Claypool, G.E., Holser, W.T., Kaplan, L.R., Sakai, H., and Zak, I., 1980, The age curves of sulphur and oxygen isotopes in marine sulphate and their mutual interpretation: Chemical Geology, v. 28, p. 199-260.
  14. Crawford, M.L., 1981, Phase equilibria in aqueous fluid inclusions, in Hollister, L.S., and Crawford, M.L., eds., Short course in fluid inclusions: applications to petrology: Calgary, Mineralogical Association of Canada, v. 6, p. 15-100.
  15. Çevrim, M., 1984, Die Zink-Blei-vererzungen des Aladag-Giebietes/TÜRKEI mit betrachtungen zur palaokastentwicklung [unpublished Ph.D. Thesis]: Aachen, Rheinisch-Westfälischen Technischen Hochschule, 184 p.
  16. Çevrim, M., Echle, W., and Friedrich, G., 1986, Aladaglar'da Paleokarstlasmaya Bagl0 Pb-Zn Mineralizasyonu: Türkiye Jeoloji kurumu Bülteni, v. 29, p. 27-41, Subat-1986.
  17. Demir, N., 1998, Nigde-Çamard0-Tekneli Yöresindeki Çinko-Kursun Maden Yataklar0n0n Bölgesel Jeolojik Evrimi ile Iliskileri. Ç.Ü. Fen. Bil. Enst., Adana. Doktora Tezi, 156 p. (yay0nlanmam0s).
  18. Eren, R.H., Uz, B., Özpeker, I., and Seymen, I., 1993, Toroslar'da Tekneli (Çamard0-Nigde) yöresi- nin tektonigi ve Pb-Zn mineralizasyonu: Yerbilimleri, Haziran, v. 22, p. 45-60.
  19. Garven, G., 1985, The role of regional fluid flow in the genesis of the Pine Point deposit, Western Canada Sedimentary Basin: Economic Geology, v. 80, p. 307-324.
  20. Genç, Y., 2001, Basçatak (Akdagmadeni-Yozgat) Pb-Zn-Cu sülfid yatag0nda gözlenen metamorfik yap0 ve dokular. 54. Türkiye Jeoloji Kurultay0 Bildiri Özleri Kitab0, Bildiri no. 54-51, Ankara.
  21. Hanilçi, N., 2003, Formation of the carbonate-hosted Pb-Zn deposits in Central and Eastern Taurus [unpublished Ph.D. thesis]: Istanbul, Natural Science Institute, Istanbul University, p. 166.
  22. Hanilçi, N., and Öztürk, H., 2003, Aladaglar'da Karbonatlar Içindeki Pb-Zn Yataklar0nda Durayl0 Kükürt Izotopu ve Mikrotermometrik Incelemeler, Dogu Toroslar, Türkiye. 56. Türkiye Jeoloji Kurultay0, Bildiri Özleri Kitab0: Ankara, JMO, p. 112-114.
  23. Hanilçi, N., and Öztürk, H., 2005, Aladaglar-Zamant0 (Dogu Toroslar) Bölgesinde Misisipi Vadisi Tipi (MVT) Zn-Pb Yataklar0: Ayrakl0 ve Denizovas0 Zn-Pb Yataklar0, Türkiye. Istanbul Üniv. Müh. Fak. Yerbilimleri Dergisi, v. 18, no. 2, p. 23-43.
  24. Hanilçi, N., and Öztürk, H., 2008, The geology and formation of the Aladaglar-Zamant0 (Kayseri) region Zn-Pb deposits, in Öztürk, H., Hanilçi, N., Kahriman, A., and Özkan, S., eds., The geol- ogy, mining and existing problems of Turkish Pb-Zn deposits: Istanbul, Istanbul University, p. 184-299.
  25. Hitzman, M.W., Reynolds, N.A., Sangster, D.F., Allen, C.R., and Carman, C.E., 2003, Classifica- tion, genesis, and exploration guides for nonsulfide zinc deposits: Economic Geology, v. 98, p. 685-714.
  26. Imreh, L., 1965, Zamant0 Metal Cevherlesme Bölgesinin Kursun-Çinko Mineralizasyonlar0: Ankara, M.T.A. Dergisi, no. 65, p. 85-108.
  27. Jørgensen, B.B., Isaksen, M.F., and Jannasch, H.W., 1999, Bacterial sulphate reduction above 100°C in deep-sea hydrothermal vent sediments: Science, v. 258, p. 1756-1757.
  28. Kontak, D.J., 1995, A study of fluid inclusions in sulphide and nonsulphide mineral phases from a carbonate-hosted Pb-Zn deposits, Gays River, Nova Scotia, Canada: Economic Geology, v. 93, p. 793-817.
  29. Koptagel, O., Efe, A., Ceyhan, F., and Erik, D., 2001, Denizovas0-Havdan Yöresi (Yahyal0 Dogusu- Kayseri) Pb-Zn Cevherlesmelerinin Genel Özellikleri; Köken ile ilgili bir yaklas0m. Türkiye Jeoloji Bülteni, Cilt: 44, Say0: 3 (Ayhan Erler Özel Say0s0), p. 15-35, Ankara.
  30. Koptagel, O., Ulusoy, U., and Efe, A., 2005, A study of sulphur isotopes in determining the genesis of Goynuk and Celaldagi Desandre Pb-Zn deposits, eastern Yahyali, Kayseri, Central Turkey: Journal of Asian Earth Sciences, v. 25, no. 2, May 2005, p. 279-289.
  31. Krogh, T.E., 1973, A low contamination method for hydrothermal decomposition of zircon and extraction of U and Pb for isotopic age determinations: Geochimica et Cosmochimica Acta, v. 37, p. 485-494.
  32. Kusçu, M., and Cengiz, O., 2001, Karbonatl0 Kayaçlara Bagl0 Orta Toroslar Pb-Zn Cevherlesmelerinin Kükürt Izotoplar0 Incelemesi: Türkiye Jeoloji Bülteni, v. 44, no. 3 (Ayhan Erler Özel Say0s0), p. 59-73, Ankara.
  33. Leach, D.L., Bradley, D., Lewchuk, M.T., Symons, D.T.A., De Marsily, G., and Brannon, J., 2001, Mississippi Valley-type lead-zinc deposits through geological time: Implications from recent age-dating research: Mineralium Deposita, v. 36, p. 711-740.
  34. Leach, D.L., Macquar, J.C., Lagneau, V., Leventhal, J., Emsbo And, P., and Premo, W., 2006, Pre- cipitation of lead-zinc ores in the Mississippi Valley-type deposit at Trèves, Cévennes region of southern France: Geofluids, v. 6, p. 24-44.
  35. Leach, D.L., Sangster, D.F., Kelley, K.D., Large, R.R., Garven, G., Allen, C.R., Gutzmer, J., and Walters, S., 2005, Sediment-hosted Pb-Zn deposits: A global perspective, in Hendquist, J., Thompson, J., Goldfarb, R., and Richards, J., eds., Society of Economic Geologists 100th anni- versary volume: Littleton, CO, Society of Economic Geologists, p. 561-608.
  36. Metag and Stolberg, 1971, Zamant0 Kursun-Çinko Projesi Nihai Raporu, Maden Sahalar0n0n Jeolojisi ve Paleontoloji: DPT Müstesarl0g0 Raporu,v. IV, 191 p. (yay0nlanmam0s).
  37. Okuyucu, C., 2002, Toroslarda Anadolu Platformu Karbonifer -Permiyen geçisinin mikropaleon- tolojik incelemesi [unpublished Ph.D. thesis]: Ankara, H.Ü. Fen Bilimleri Enstitüsü Doktora Tezi, 207 p.
  38. Oygür, V., 1986, Karamadaz0 (Yahyal0-Kayseri) Kontak Metazomatik Manyetit Yatag0n0n Jeolojisi ve Olusumu: Jeoloji Mühendisligi, v. 27, p. 1-9, Nisan-1986.
  39. Özgül, N., 1971, Orta Toroslar'0n kuzey kesiminin yap0sal gelisiminde blok hareketlerinin önemi: TJK Bülteni, v. 14, p. 75-87.
  40. Özgül, N., 1976, Some geological aspects of the Taurus orogenic belt (Turkey): Bulletin of the Geological Society of Turkey, v. 19, p. 65-78.
  41. Öztürk, H., 1997, Manganese deposits in Turkey: Distributions, types and tectonic setting: Ore Geology Reviews, 12, p. 187-203.
  42. Öztürk, H., and Hein, J.R., 1997, Mineralogy and stable isotopes of black shale -Hosted manganese ores, Southwestern Taurides, Turkey: Economic Geology, v. 92, p. 733-744.
  43. Öztürk, H., Hein, J.R., and Hanilçi, N., 2002, Genesis of the Dogankuzu and Mortas bauxite depoists, Taurides, Turkey: Separation of Al, Fe and Mn and implications for passive margin metallogeny: Economic Geology, v. 97, p. 1063-1077.
  44. Petrascheck, E.W., 1967, Bat0 Toros kalkerlerindeki kursun-çinko yataklar0: Ankara, M.T.A. Dergisi, no. 68, p. 38-48.
  45. Robertson, A.H.F., 2000, Mesozoic-Tertiary tectonic-sedimentary evolution of a South Tethyan oceanic basin and its margins in southern Turkey, in: Bozkurt, B., Winchester, J.A., and Piper, J.D.A., eds., Tectonics and magmatism in turkey and the surrounding area: London, Geo- logical Society, Special Publications, v. 173, p. 97-138.
  46. Robertson, A.H.F., and Dixon, J.E., 1984, Introduction: Aspects of the geological evolution of the Eastern Mediterranean, in Dixon, J.E., and Robertson, A.H.F., eds., The evolution of the Eastern Mediterranean: London, Geological Society, . Special Publications, v. 17, p. 1-74.
  47. Roedder, E., 1979, Fluid inclusions as samples of ore fluids, in Barnes, H.L., ed., Geochemistry of hydrothermal ore deposits (second edition): Wiley InterScience, New York, p. 684-737.
  48. Roedder, E., 1984, Fluid inclusions: Reviews in Mineralogy, v. 12, 644 p. Mineralogical Society of America, Washington.
  49. Rollinson, H.R., 1993, Using geochemical data: Evaluation, presentation, interpretation: Academic Press, London, 352 p.
  50. Sengör, A.M.C., and Y0lmaz, Y., 1981, Tethyan evolution of Turkey: a plate tectonic approach: Tec- tonophysics, v. 75, p. 181-241.
  51. Shepherd, T.J., Rankin, A.H., and Alderton, D.H.M., 1985, A practical guide to fluid inclusion studies: Glasgow, Blackie, 239 p.
  52. Sverjensky, D.A., 1981, The origin of a Mississippi Valley-type deposit in the Viburnum Trend, Southeast Missouri: Economic Geology, v. 76, no. 7, p. 1848-1872.
  53. Sverjensky, D.A., 1984, Oil field brines as ore forming solutions: Economic Geology, v. 79, p. 23-37.
  54. Sverjensky, D.A., 1986, Genesis of Mississippi Valley-type lead zinc deposits: Annual Review of Earth and Planetary Science, v. 14, p. 177-199.
  55. Tekeli, O., Aksay, A., Ürgün, B.M., and Is0k, A., 1983, Geology of Aladag Mountains, in Tekeli, O., and ve Göncüoglu, M.C., eds., Geology of the Taurus belt. Proceedings of the International Symposium: Ankara, MTA, p. 143-158.
  56. Tok, T., Senel, M., Alan, I., Keskin, H., Tapt0k, A., and Kop, A., 2004, Yahyal0 Nap0n0n Stratigrafik ve Yap0sal Özellikleri ve Toros Kusag0'nda Benzer Birimlerle Kars0last0r0lmas0. 57. Türkiye Jeoloji Kurultay0, Bildiri Özleri Kitab0: Ankara, JMO, p. 267-268.
  57. Van Den Kerkhof, A.M., and Hein, U.F., 2001, Fluid inclusion petrography: Lithos, v. 55, p. 27-47.
  58. Zartman, R.E., and Doe, B.R., 1981, Plumbotectonics -The model: Tectonophysics, v. 75, p. 135-162.