The tectonomagmatic evolution of structure-lithologic complexes in the Tannu-Ola zone, Tuva, in the Late Vendian-Early Cambrian (from geochemical, Nd isotope, and geochronological data)

Mongush A.A.; Lebedev V.I.; Kovach V.P.; Sal'nikova E.B.; Druzhkova E.K.; Yakovleva S.Z.; Plotkina Y.V.; Zagornaya N.Y.; Travin A.V; Serov P.A.

doi:10.1016/j.rgg.2011.04.003

Инд. авторы:	Mongush A.A., Lebedev V.I., Kovach V.P., Sal'nikova E.B., Druzhkova E.K., Yakovleva S.Z., Plotkina Y.V., Zagornaya N.Y., Travin A.V, Serov P.A.
Заглавие:	The tectonomagmatic evolution of structure-lithologic complexes in the Tannu-Ola zone, Tuva, in the Late Vendian-Early Cambrian (from geochemical, Nd isotope, and geochronological data)
Библ. ссылка:	Mongush A.A., Lebedev V.I., Kovach V.P., Sal'nikova E.B., Druzhkova E.K., Yakovleva S.Z., Plotkina Y.V., Zagornaya N.Y., Travin A.V, Serov P.A. The tectonomagmatic evolution of structure-lithologic complexes in the Tannu-Ola zone, Tuva, in the Late Vendian-Early Cambrian (from geochemical, Nd isotope, and geochronological data) // Russian Geology and Geophysics. - 2011. - Vol.52. - Iss. 5. - P.503-516. - ISSN 1068-7971. - EISSN 1878-030X.
Внешние системы:	DOI: 10.1016/j.rgg.2011.04.003; SCOPUS: 2-s2.0-79955041477;
Реферат:	eng: In the Tannu-Ola zone, there are island-arc (Late Vendian) and subduction-accretionary (first half of the Early Cambrian) complexes whose mantle sources were generated from melts produced in suprasubduction conditions as a result of the melting of mantle wedge peridotites. The island arc, whose fragment is present in the Tannu-Ola zone, formed tentatively at 570 Ma and ceased as an individual structure at the Vendian-Cambrian boundary, though the subduction continued till the middle Early Cambrian. From the Vendian-Cambrian boundary to middle Early Cambrian, the accretion of island-arc, back-arc, oceanic, and metamorphic structure-lithologic complexes took place at this segment of the Central Asian Fold Belt. From middle to late Early Cambrian, the Tannu-Ola zone was an active continental margin, where basalts with island-arc characteristics, quartz microdiorites of adakite composition, basalts, dolerites, and quartz microdiorites of intraplate type, and diorite-tonalite-plagiogranite association of island-arc type formed. To explain the spatial and temporal conjugation of different magmatism manifestations on the active margin, we applied the slab-window model. © 2011.
Ключевые слова:	Cambrian; continental margin; fold belt; geochemistry; geochronology; geodynamics; island arc; magmatism; mantle source; neodymium isotope; Tuva; Russian Federation; Vendian; tectonic evolution; subduction; accretionary prism; Vendian; Tuva; Subduction; Island arc; Geodynamics; Cambrian; active margin; Accretion;
Издано:	2011
Физ. характеристика:	с.503-516