On the age of pyrochlore carbonatites from the Ilmeno-Vishnevogorsky Alkaline Complex, the Southern Urals (insights from Rb-Sr and Sm-Nd isotopic data)
https://doi.org/10.24930/1681-9004-2020-20-4-486-498
Abstract
Research subject. In this research, we carried out Sm-Nd- и Rb-Sr-dating of pyrochlore carbonatite from the Vishnevogorsky niobium deposit, Ilmeno-Vishnevogorsky Alkaline Complex, Southern Urals. IVC is located in the Ural fold region and is a carbonatite complex of the linear type. Rare metal (Nb-Zr-TR) deposits and occurrences are related to IVC. The age and the duration of IVC deposits formation remains a matter of debate. To determine the age of IVC carbonatites and related niobium ore, we measured Sm-Nd and Rb-Sr isotopic compositions and concentrations of the elements in the minerals (pyrochlore, calcite, apatite, biotite) and bulk sample of pyrochlore carbonatite.
Materials and methods. The Sm and Nd isotopic compositions and concentrations were determined on a Finnigan MAT-262L (RPQ) seven-collector mass spectrometer in the static regime at the Geological Institute of the Kola Scientific Center, Apatity, Russia. The Sr and Rb isotopic compositions and concentrations were determined on thermos-ionization mass spectrometer Triton Plus (“Geoanalitik”, IGG UD RAN, Ekaterinburg, Russia).
Results. Age of pyrochlore carbonatites from ore zone 140 (Vishnevogorsky deposit, IVC) defined by Sm-Nd and Rb-Sr isotopic methods. Mineral Sm-Nd-isochron (5 points) indicated age 229 ± 16 Ma, mineral Rb-Sr-isochron (5 points) showed similar age 250.5 ± 1.2 Ma.
Conclusions. Results Sm-Nd и Rb-Sr dating indicate that the pyrochlore сarbonatites of ore zone 140 crystallized ≈ 250 Ma ago, at the stage of the postcollisional extension, possibly, in connection with exhumation complex, which was accompanied by decompression, partial melting of rocks, involving fluids, dissolution and precipitation of Ordovician-Silurian alkaline-carbonatitе complex. Thus, the formation of the IVC carbonatites and related Nb-ore, which began in Silurian (S), continued in Permian (P) and Triassic (T1-2) and was associated with the post-collision stage of tectonic activity in the Ural Fold Belt.
Supporting agencies: This work supported by grant RFFI No. 17-05-00154 and in accordance with the theme No. AAAA-A18-118052590028-9 of the IGG UB RAS state assignment
About the Authors
I. L. Nedosekova
Zavaritsky Institute of Geology and Geochemistry Ural Branch of RAS
Russian Federation
15 Akad. Vonsovsky st., Ekaterinburg 620016
Russian Federation
15 Akad. Vonsovsky st., Ekaterinburg 620016
V. A. Koroteev
Zavaritsky Institute of Geology and Geochemistry Ural Branch of RAS
Russian Federation
15 Akad. Vonsovsky st., Ekaterinburg 620016
Russian Federation
15 Akad. Vonsovsky st., Ekaterinburg 620016
T. B. Bayanova
Institute of Geology Kola Science Centre of RAS
Russian Federation
14 Fersman st., Murmansk region, Apatity 184209
Russian Federation
14 Fersman st., Murmansk region, Apatity 184209
P. A. Serov
Institute of Geology Kola Science Centre of RAS
Russian Federation
14 Fersman st., Murmansk region, Apatity 184209
Russian Federation
14 Fersman st., Murmansk region, Apatity 184209
V. I. Popova
Institute of Mineralogy Ural Branch of RAS
Russian Federation
Chelyabinsk region, Miass 456317
Russian Federation
Chelyabinsk region, Miass 456317
M. V. Chervyakovskaya
Zavaritsky Institute of Geology and Geochemistry Ural Branch of RAS
Russian Federation
15 Akad. Vonsovsky st., Ekaterinburg 620016
Russian Federation
15 Akad. Vonsovsky st., Ekaterinburg 620016
References
1. Atencio D., Andrade M.B., Christy A.G., Giere R., Kartashov P.M. (2010) The pyrochlore supergroup of minerals: nomenclature. Canad. Mineral., 48, 673-698. https://doi.org/10.3749/canmin.48.3.67.
2. Attoh K., Corfu F., Nudec P.M. (2007) U-Pb zircon age of deformed carbonatite and alkaline rocks in the Pan-African Dahomeyide suture zone, West Africa. Precambr. Res., 155, 251-260. https://doi.org/10.1016/j.precamres.2007.02.003.
3. Bayanova T., Korchagin A., Mitrofanov A., Serov P., Ekimova N., Nitkina E., Kamensky I., Elizarov D., Huber M. (2019) Long-lived mantle plume and polyphase evolution of Palaeoproterozoic PGE intrusions in the Fennoscandian Shield. Minerals, 9(1), 59. https://doi.org/10.3390/min9010059.
4. Bazhenov A.G. (1997) The distribution of zirconium in Il’menogorsk miaskite massif and questions of the Genesis of miaskites. Ural’skii Mineral. Sbornik. Miass, URO RAN, 7, 72-79. (In Russian)
5. Bazhenov A.G. (2006) On miaskit genesis. Geokhimiya, petrologiya, mineralogiya i genezis shchelochnykh rodov. Tezisy Vseross. soveshch. [Geochemistry, petrology, mineralogy and genesis of alkaline rocks. Absracts of All-Russian Conf.]. Miass, UB RAS, 21-25. (In Russian)
6. Belyatskii V.V., Lepekhina Ye.N., Antonov A.V., Rodionov N.V., Nedosekova I.L., Petrov O.V., Shevchenko S.S., Sergeev S.A. (2018) On age of Nb-rare-earth mineralization of Ilmeny-Vishnevogorsk alkaline complexes (the Southern Urals) Dokl. Akad. Nauk, 481(6), 67-73. https://doi.org/10.1134/S1028334X18080251. (In Russian)
7. Biswal T.K., Waele B.D., Ahuja H. (2007) Timing and dynamics of the juxtaposition of the Eastern Ghats Mobile Belt against the Bhandara Craton, India: A structural and zircon U-Pb SHRIMP study of the fold-thrust belt and associated nepheline syenite plutons. Tectonics, 26(4), TC4006. https://doi.org/10.1029/2006TC002005.
8. Burke K., Ashwal L.D., Webb S.J. (2003) New way to map old sutures using deformed alkaline rocks and carbonatites. Geology, 31(5), 391-394. https://doi.org/10.1130/0091-7613(2003)031<0391:NWTMOS>2.0.CO;2.
9. Campbell L.S., Compston W., Sircombe K.N., Wilkinson C.C. (2014) Zircon from the East Orebody of the Bayan Obo Fe-Nb-REE deposit, China, and SHRIMP ages for carbonatite-related magmatism and REE mineralization events. Contrib. Mineral. Petrol., 168, 1048-1064. https://doi.org/10.1007/s00410-014-1041-3.
10. Chernyshev I.V., Kononova V.A., Kramm U., Grauert B. (1987) Isotope geochronology of alkaline Urals inside U-Pb method on zircons. Geokhimiya, (3), 323-338. (In Russian)
11. Dodson M.H. (1973) Closure temperature in cooling geochronological and petrological systems. Contrib. Mineral. Petrol., 40, 259-274.
12. Emmanuel N.N., Rigobert T., Nédélec A., Siqueira R., Pouclet A., Bascou J. (2013) Structure and petrology of Pan-African nepheline syenites from the South West Cameroon; Implications for their emplacement mode, petrogenesis and geodynamic significance. African Earth Sci., 87, 44-58. https://doi.org/10.1016/J.JAFREARSCI.2013.07.008.
13. Ganguly J., Tirone M., Hervig R.L. (1998) Diffusion kinetics of samarium and neodymium in garnet, and a method for determining cooling rates of rocks. science, 281, 805- 807. https://doi.org/10.1126/science.281.5378.805.
14. Hogarth D.D. (1977) Classification and nomenclature of the pyrochlore group. Amer. Miner., 62, 403-410.
15. Hou Z.Q., Tian S.H., Yuan Z.X., Xie Y.L., Yin S.P., Yi L.S., Fei H.C., Yang Z.M. (2006) The Himalayan collision zone carbonatites in western Sichuan, SW China: petrogenesis, mantle source and tectonic implication. Earth Planet. Sci. Lett., 244, 234-250. https://doi.org/10.1016/j.epsl.2006.01.052.
16. Ivanov K.S. (2011) On Uralian carbonatites nature. Litosfera, 1, 20-33. (In Russian)
17. Ivanov K.S., Valizer P.M., Yerokhin Yu.V., Pogromskaya O.Ye. (2010) About genesis of fault belts carbonatites (on the example of the Urals) Dokl. Akad. Nauk, 435(2), 218-222. https://doi.org/10.1134/S1028334X10110036. (In Russian)
18. Jenkin G.R.T., Rogers G., Fallick A.E. (1995) Rb-Sr clousere temperatures in bi-mineralic rocks: a mode effect and test for defferent diffusion models. Chem. Geol., 122, 227-240.
19. Kononova V.A., Dontsova Ye.I., Kuznetsova L.D. (1979) The isotopic composition of oxygen and strontium Il’meno-Vishnevogorsky alkaline complex, and questions of genesis of miaskites. Geokhimiya, (12), 1784-1795. (In Russian)
20. Kramm U., Blaxland A.B., Kononova V.A., Grauert B. (1983) Origin of the Ilmenogorsk-Vishnevogorsk nepheline syenites, Urals, USSR, and their time of emplasement during the history of the Ural fold belt: a Rb-Sr study. J. Geol., 91, 427-435.
21. Kramm U., Chernyshev I.V., Grauert S., Kononova V.A., Brecker V. (1993) Zircon typology and U-Pb systematics: a Case Study of zircons from nefeline syenite of the Il’meny Mountains, Ural. Petrology, 1(5), 474-485.
22. Krasnobaev A.A., Rusin A.I., Busharina S.V., Lepekhina Ye.N., Medvedeva Ye.V. (2010a) Zirkonology of Il'menogorsk Massiv amfibol miaskits (the Southern Urals). Dokl. Akad. Nauk, 430(2), 227-231. (In Russian)
23. Krasnobaev A.A., Rusin A.I., Valizer P.M., Busharina S.V. (2010б) Zirkonology of Vishnevogorsk Massive calcite carbonatites (the Southern Urals). Dokl. Akad Nauk, 431(3), 382-385. https://doi.org/10.1134/S1028334X10030268. (In Russian)
24. Krasnobaev A.A., Valizer P.M., Busharina S., Lepekhina Ye.N., Medvedeva Ye.V. (2016) Miaskite zirkonology of Il’menskie Mounts (the Southern Urals). Geokhimiya, 9, 797-813. https://doi.org/10.1134/S0016702916070041. (In Russian)
25. Levin V.A., Ronenson B.M., Samkov V.S., Levina I.A., Sergeev N.S., Kiselev A.P. (1997) Shchelochno-karbonatnye kompleksy Urala [Alcaline-carbonatites rocks of the Urals]. Ekaterinburg, Uralgeolkom Publ., 270 p. (In Russian)
26. Ludwig K.R. (2008) ISOPLOT/Ex – A geochronological toolkit for Microsoft Excel, Version 3.6. Berkeley Geochronology Center Spec. Publ., 4, 76 p. Mitchell R.H. (2005) Carbonatites, and carbonatites and carbonatites. Canad. Mineral., 43, 2049-2068. https://doi.org/10.2113/gscanmin.43.6.2049.
27. Nedosekova I.L., Belousova Ye.A., Belyatskiy B.V. (2014) U-Pb age and Lu-Hf isotope systems of zircons of the Ilmeno-Vishnevogorsky alkaline-carbonatite complex, the Southern Urals. Litosfera, 5, 19-32. https://www.lithosphere.ru/jour/article/view/406/405. (In Russian)
28. Nedosekova I.L., Belousova Ye.A., Belyatskiy B.V. (2015) Isotopic composition of hafnium and rare elements as identifiers of zircon genesis during the evolution of the alkaline-carbonatite magmatic system (Ilmen-vishnevogorsky complex, the Urals, Russia) Dokl. Akad. Nauk, 461(5), 569-574. https://doi.org/10.15372/GiG20160604. (In Russian)
29. Nedosekova I.L., Belousova Ye.A., Sharygin V.V. (2010) Sources of the Ilmen-Vishnevogorsky alkaline complex substance according to Lu-Hf isotopes in zircons Dokl. Akad. Nauk, 435(2), 234-239. https://doi.org/10.1134/S1028334X10110176. (In Russian)
30. Nedosekova I.L., Belousova E.A., Sharygin V.V., Belyatsky B.V., Baynova T.B. (2013) Origin and evolution of the Il’meny-Vishnevogorsk carbonatites (Urals, Russia): insights from trace-elements compositions, Rb-Sr, SmNd, U-Pb and Lu-Hf isotope data. Mineral. Petrol., 107, 101-123. https://doi.org/10.1007/s00710-012-0223-9.
31. Nedosekova I.L., Belyatskii B.V. (2012) Age and sources of the substance of the Ilmen-Vishnevogorsky alkaline complex (S. Urals): isotopic Rb-Sr, Sm-Nd, U-Pb and Lu-Hf data Dokl. Akad. Nauk, 446(1), 71-76. https://doi.org/10.1134/S1028334X12090061. (In Russian)
32. Nedosekova I.L., Belyatskii V.V., Belousova Ye.A. (2016) Rare elements and isotopic composition of hafnium as indicators of zircon Genesis during the evolution of the alkaline-carbonatite magmatic system (IlmenoVishnevogorsky complex, Urals, Russia). Geol. Geofiz., 57, 1135-1154. https://doi.org/10.1016/j.rgg.2015.09.021. (In Russian)
33. Nedosekova I.L., Koroteev V.A., Bayanova T.B., Belyatskii B.V. (2018) Sources of ore matter of carbonatite complexes of the Ural folded region (according to RbSr and Sm-Nd isotopes). Dokl. Akad. Nauk, 480(5), 578- 582. https://doi.org/10.1134/S1028334X18060156. (In Russian)
34. Nedosekova I.L., Vladykin N.V., Pribavkin S.V., Bayanova T.B. (2009) Ilmeno-Vishnevogorsky miaskite-carbonatite complex: origin, ores, sources (Urals, Russia). Geol. Rudn. Mestorozhd., 51(2), 157-181. (In Russian)
35. Poletti J.E., Cottle J.M., Hagen-Peter G.A., Lackey J.S. (2016) Petrochronological constraints on the origin of the Mountain Pass ultrapotassic and carbonatite intrusive suite, California. J. Petrol., 57(8), 1555-1598. https://doi.org/10.1093/petrology/egw050.
36. Pribavkin S.V., Nedosekova I.L. (2006) Sources of carbonatites in Il’meno-Vishnevogorsk complex on the Sr-Nd isotopes date Dokl. Akad. Nauk, 408(3), 385- 388. https://doi.org/10.1134/S1028334X0604026X. (In Russian)
37. Puchkov V.N. (2010) Geologiya Urala i Priural’ya (aktual’nye voprosy stratigrafii, tektoniki, geodinamiki i metallogenii) [Geologa of Urals and Cis-Urals (modern stratigraphy, tectonics, geodynamics and metallogeny data)]. Ufa, DizaynPoligrafServis Publ., 280 p. (In Russian)
38. Raczek I., Jochum K.P., Hofmann A.W. (2003) Neodymium and strontium isotope data for USGS reference materials BCR-1, BCR-2, BHVO-1, BHVO-2, AGV-1, AGV- 2, GSP-1, GSP-2 and eight MPI-DING reference glasses. Geostand. Geoanalyt. Res., 27, 173-79. DOI: 10.1111/j.1751-908X.2003.tb00644.x.
39. Rodionov N.V., Belyatsky B.V., Antonov A.V., Kapitonov I.N., Sergeev S.A. (2012) Comparative in-situ U– Th–Pb geochronology and trace element composition of baddeleyite and low-U zircon rom carbonatites of the Paleozoic Kovdor alkaline-ultramafic complex, Kola Peninsula, Russia. Gondw. Res., 21, 728-744. https://doi.org/10.1016/j.gr.2011.10.005.
40. Rusin A.I., Valizer P.M., Krasnobayev A.A., Baneva N.N., Medvedeva E.V., Dubinina E.V. (2012) Nature of garnetanorthite-clinopyroxen-amfibole rocks of Il’menogorsky complex (the Southern Urals). Litosfera, (1), 91-109. (In Russian)
41. Sklyarov E.V., Gladkochub D.P., Donskaya T.V., Ivanov A.V., Letnikova E.F., Mironov A.G., Barash I.G., Bulanov V.A., Sizykh A.I. (2001) Interpretatsiya geokhimicheskikh dannykh [Iinterpretation of geochemical data]. Moscow, Intermet Inzhiniring Publ., 228 p. (In Russian)
42. Tanaka T., Togashi S., Kamioka H., Amakawa H., Kagami H., Hamamoto T., Yuhara M., Orihashi Y., Yoneda S., Shimizu H., Kunimaru T., Takahashi K., Yanagi T., Nakano T., Fujimaki H., Shinjo R., Asahara Y., Tanimizu M., Dragusanu C. (2000) JNdi-1: a neodymium isotopic reference in consistency with LaJolla neodymium. Chem. Geol., 168, 279-281. DOI: 10.1016/S0009-2541(00)00198-4.
43. Vetrin V.R., Skublov S.G., Balashov A., Lyalina L.M., Rodionov N.V. (2014) Time of formation and genesis of yttrium-zirconium mineralization in the Sakharjok massif, Kola Peninsula. Geol. Ore Deposits, 56(8), 603- 616. https://doi.org/10.1134/S107570151408011X.
44. Ye H.-M., Li X.-H., Lan Zh.-W. (2013) Geochemical and Sr-Nd-Hf-O-C isotopic constraints on the origin of the Neoproterozoic Qieganbulake ultramaficcarbonatite complex from the Tarim Block, Northwest China. Lithos, 182, 150-164. https://doi.org/10.1016/j.lithos.2013.10.002.
45. Ying Y., Chen W., Lu J.Ю, Jiang S., Yanget Y. (2017) In situ U–Th–Pb ages of the Miaoya carbonatite complex in the South Qinling orogenic belt, central China. Lithos, 290, 159-171. https://doi.org/10.1016/j.lithos.2017.08.003.
46. Zoloev K.K., Levin V.Ya., Mormil’ S.I., Shardakova G.Yu. (2004) Mineraly i mestorozhdeniya redkikh metallov, molibdena, vol’frama Urala [Mineralogy and deposits of rare metals, molybdenum, and tungsten in the Urals]. Ekaterinburg, Minprirody RF Publ., 336 p. (In Russian)
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Nedosekova I.L., Koroteev V.A., Bayanova T.B., Serov P.A., Popova V.I., Chervyakovskaya M.V. On the age of pyrochlore carbonatites from the Ilmeno-Vishnevogorsky Alkaline Complex, the Southern Urals (insights from Rb-Sr and Sm-Nd isotopic data). LITHOSPHERE (Russia). 2020;20(4):486-498. (In Russ.) https://doi.org/10.24930/1681-9004-2020-20-4-486-498
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