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ISSN 2307-2091 (Print) 

ISSN 2500-2414 (Online)

DOI 10.21440/2307-2091-2017-3-7-16

Magmatism and metallogeny of the transverse structures of the North  Urals pdf

V. A. Dushin

The article contains summarized results of the study of Late Paleozoic-Mesozoic magmatic complexes of the North Urals; there are three age levels of the plume-type intraplate magmatism: Permian-Triassic alkaline-acid (Torasoveysky, Levdievsky, Pon'insky complexes), Triassic-Jurassic trappean (Musyursky, Yatyinsky complexes), and Jurassic-Cretaceous alkaline-basite (Yalyayakhinsky, Marunsky, and Osoveisky complexes). The author shows their confinement to transverse disjunctive structures discordant to the general submeridional structure of the folded system. For the first time the author provides results of studying the isotope age of magmatites and describes their geochemical and metallogenic specializations. Thus, the Late Permian-Early Triassic stage is characterized by the manifestation of alkaline-acidic magmatism and associated mineralization of rare metal-albitite (Ta-Nb-Th-U) with gold and platinoids (Taykeusky, Longotsky deposits), quartz-fluorite and carbonatefluorite (Amderminsky deposit), and gold-copper-molybdenum-porphyry (Levdievsky manifestation) formations. The ore objects of the Triassic-Jurassic stage due to the magmatism of trappean type are represented by small objects of gold-porphyry (Petropavlovsky deposit) formation, as well as by deposits of crystal, Iceland spar
(Khasavarka, Pelin-gichey deposit) and agates (Harbeysky-Yagodny manifestation). The productivity of alkaline-basite-ultrabasite magmatism formations, attributed to manifestations of mantle and crust-mantle types, is of interest primarily for their probable diamond content (Nemziyakhinsky complex). In addition, alkalinebasite magmatism is promising for the manifestations of mercury, tungsten-mercury (Malotal'beysky, Sfinks manifestations), gold-quartz-sulfide with platinoids (Penzengoyakhinsky manifestation and others) and quartz-antimonite (Verkhnekhanmeisky, Slavkino ore manifestations) formations. The author makes a conclusion on the connection between the magmatism of the Urals and the processes that occurred in the foundation of the West Siberian plate.

Keywords: North Urals; tectonic structures; magmatic complexes; monzonites; dolerites; lamproites; rare metals; isotopic age.

 

REFERENCES

1. Dushin V. A. 1997, Magmatizm i geodinamika paleokontinental'nogo sektora Severa Urala [Magmatism and geodynamics of the paleocontinental sector of the North of the Urals], Moscow, 213 p.
2. Dushin V. A., Ostroumov V. R., Malyugin A. A. et al. 2014, Potentsial'naya almazonosnost' Polyarnogo Urala [Potential diamond content of the Polar Urals], Ekaterinburg, 200 p.
3. Volkov S. N. 1959, O geotektonicheskom rayonirovanii vostochnogo sklona Polyarnogo i Pripolyarnogo Urala [On geotectonic zoning of the eastern slope of the Polar and Subpolar Urals]. Materialy godichnoy sessii uchenogo soveta VSEGEI po rezul'tatam rabot 1959 g. [Materials of the annual session of the Scientific Council of All-Russian Scientific Research Geological Institute on the results of 1959 works], Leningrad, pp. 14–22.
4. Gryaznov O. N., Dushin V. A., Makarov A. B. et al. 1986, Geologicheskie formatsii i istoriya razvitiya gornoy chasti Polyarnogo Urala [Geological formations and the history of the development of the mountainous part of the Polar Urals]. Byul. MOIP. Otd. geol. [Bulletin of the Moscow Society of Naturalists. Geological Department], vol. 61, no. 4, pp. 30–60.
5. Gorskiy V. P., Moldavantsev Yu. E. 1962, Printsipy tektonicheskogo rayonirovaniya Urala na osnove blokovogo stroeniya ego fundamenta [Principles of tectonic zoning of the Urals on the basis of the block structure of its foundation]. Tezisy dokl. soveshch. po problemam tektoniki [Abstract reports of the meeting on problems of tectonics], Moscow, pp. 47–58.
6. Dedeev V. A. 1959, Fatsii i geologicheskaya istoriya srednego paleozoya vostochnogo sklona Polyarnogo Urala (Shchuch'inskiy sinklinoriy) [Facies and geological history of the Middle Paleozoic of the eastern slope of the Polar Urals (Shchuchin synclinorium)]. Tr. Vsesoyuz. neft. issled. geologorazved. in-ta [The Third All-Union Petroleum Research of the Geological Prospecting Institute], vol. 131, no. 4, pp. 5–15.
7. Dushin V. A. 2016, Magmatizm poperechnykh struktur Ural'skogo Severa [Magmatism of the transverse structures of the Ural North]. Gornye vedomosti [Mining records], no. 5-6, pp. 86–101.
8. Ogarinov I. S. 1968, Sekushchie Ural struktury i ikh rol' v razvitii Ural'skoy geosinklinali [Secular Urals structures and their role in the development of the Ural geosyncline]. Glubinnoe stroenie Urala [Deep structure of the Urals], Moscow, 215 p.
9. Kheraskov N. P., Perfil'ev A. S. 1961, Osnovnye cherty tektoniki Urala [The main features of the tectonics of the Urals]. Tez. dokl. soveshch. po problemam tektoniki [Abstract report of the meeting on problems of tectonics.], vol. 136, no. 4, pp. 176–184.
10. Dushin V. A. 1999, Mezo-kaynozoyskiy magmatizm, geodinamika i problemy korennoy almazonosnosti Pripolyarnogo Urala [Mesozoic-Cenozoic magmatism, geodynamics and problems of radical diamondiferousness of the Subpolar Urals]. Novye idei v naukakh o Zemle: materialy IV Mezhdunar. konf. [New ideas in the Earth sciences: materials of the IV International Conference], Moscow, vol. 1, pp. 176.
11. Belyakov L. N., Dembovskiy B. Ya. 1982, Osnovnye cherty strukturno-tektonicheskogo rayonirovaniya Timano-Ural'skoy oblasti [The main features of the structural-tectonic zoning of the Timan-Ural region]. Doklady Akademii nauk SSSR [Doklady Earth Sciences], vol. 226, no. 6, pp. 1437–1440.
12. Ponomarev G. Ya., Romanova N. V. 1983, Gertsinskiy magmatizm Baydaratskoy zony razlomov [Hercynian magmatism of the Baydaratsky fault zone]. Doklady Akademii nauk SSSR [Doklady Earth Sciences], no. 3, pp. 876–881.
13. Fishman M. V. Yushkin N. P. 1980, Problemy metallogenii Evropeyskogo Severo-Vostoka [Problems of metallogeny in the European North-East]. Tr. Komi FAN SSSR [Proceedings of the Komi FAN USSR], no. 57, pp. 3–21.
14. Condie K. C. 1973, Archaean magmatism and crustal thickening. Geol. Soc. Am. Bull., vol. 84, no. 9, pp. 2981–2992.
15. Pearce T. H., Gorman B. E., Birkett T. C. 1975, The TiO2-K2O-P2O5 diagram: a method of dis-criminating between oceanic and non-oceanic basalts. Earth and Planetary Science Letters, no. 24, pp. 419–426.
16. Kalinovskiy A. V. 1990, Redkometall'nye kompleksy Man'khambovskogo metallogenicheskogo rayona na Severnom Urale [Rare metal complexes of the Man'khambovsky metallogenic region in the Northern Urals], Syktyvkar, 23 p.

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