Polychronity and polygeneity of pegmamtites of gneissic-amphibolitic complexes as a result of continuous-discontinuous development of suture zones: Example of the Ufalei metamorphic block in the Middle Urals |
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Authors: | V A Koroteev V N Ogorodnikov Yu L Ronkin V N Sazonov Yu A Polenov |
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Institution: | 1.Zavaritskii Institute of Geology and Geochemistry, Ural Division,Russian Academy of Sciences,Yekaterinburg,Russia;2.Ural State Mining University,Yekaterinburg,Russia |
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Abstract: | In suture zones of the Urals, geological and physical-chemical conditions for formation of large ore and nonmetalliferous
deposits existed during each geodynamical environment of development of the Urals. The development was predetermined by the
duration and discontinuous-continuous existence of these structures, and the latter promoted the development of polygenetic
and polychronic pegmatites of various types (by depth and productivity) and other postmagmatites. It has been shown in the
example of the Ufalei metamorphic block that pegmatites of different ages (from R2 to P) are often spatially combined. In this paper, two age diagrams are presented: the first one is for geological events
that took place in the Ufalei metamorphic block; the second one is for Vendian pegmatites in it. The value of this paper is
determined by the fact that the data obtained in Ufalei block could be used for study of postmagmatites within its analogs,
which are gneissic-amphibolitic complexes of the Northern Urals, and especially by the fact that the project “Polar Urals,
Industrial Urals” is implemented there. |
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