TY - JOUR

T1 - Thermochronology and mathematical modeling of the formation dynamics of rare-metal-granite deposits of the Altai collision system

AU - Murzintsev, N. G.

AU - Annikova, I. Yu

AU - Travin, A. V.

AU - Vladimirov, A. G.

AU - Dyachkov, B. A.

AU - Maslov, V. I.

AU - Oitseva, T. A.

AU - Gavryushkina, O. A.

N1 - Мурзинцев Н.Г., Анникова И.Ю., Травин А.В., Владимиров А.Г., Дьячков Б.А., Маслов В.И., Ойцева Т.А., Гаврюшина О.А. Термохронология и математическое моделирование динамики формирования редкометалльно-гранитных месторождений Алтайской коллизионной системы // Geodynamics and Tectonophysics. - 2019. - Т. 10. - № 2. - С. 375-404

PY - 2019/1/1

Y1 - 2019/1/1

N2 - The article presents an event correlation of the Permian-Triassic granites of the Altai collision system, which are associated with industrial ore deposits and occurrences (Mo-W, Sn-W, Li-Ta-Be). The multi-system and multi-mineral isotope datings of igneous rocks and ore bodies (U/Pb, Re/Os, Rb/Sr, Ar/Ar-methods) suggest the postcollisional (intraplate) formation of ore-magmatic systems (OMS), the duration of which depended on the crust-mantle interaction and the rates of tectonic exposure of geoblocks to the upper crustal levels.Two cases of the OMS thermal history are described: (1) Kalguty Mo-W deposit associated with rare-metal granite-leucogranites and ongonite-elvan dykes, and (2) Novo-Akhmirov Li-Ta deposit represented by topaz-zinnwaldite granites and the contemporary lamprophyre and ongonit-elvan dykes. For these geological objects, numerical modeling was carried out. The proposed models show thermal cooling of the deep magmatic chambers of granite composition, resulting in the residual foci of rare-metal-granite melts, which are known as the petrological indicators of industrial ore deposits (Mo-W, Sn-W, Li-Ta-Be). According to the simulation results concerning the framework of a closed magmatic system with a complex multistage development history, the magmatic chamber has a lower underlying observable massif and a reservoir associated with it. A long-term magmatic differentiation of the parental melt (a source of rare-metal-granite melts and ore hydrothermal fluids) takes place in this reservoir.

AB - The article presents an event correlation of the Permian-Triassic granites of the Altai collision system, which are associated with industrial ore deposits and occurrences (Mo-W, Sn-W, Li-Ta-Be). The multi-system and multi-mineral isotope datings of igneous rocks and ore bodies (U/Pb, Re/Os, Rb/Sr, Ar/Ar-methods) suggest the postcollisional (intraplate) formation of ore-magmatic systems (OMS), the duration of which depended on the crust-mantle interaction and the rates of tectonic exposure of geoblocks to the upper crustal levels.Two cases of the OMS thermal history are described: (1) Kalguty Mo-W deposit associated with rare-metal granite-leucogranites and ongonite-elvan dykes, and (2) Novo-Akhmirov Li-Ta deposit represented by topaz-zinnwaldite granites and the contemporary lamprophyre and ongonit-elvan dykes. For these geological objects, numerical modeling was carried out. The proposed models show thermal cooling of the deep magmatic chambers of granite composition, resulting in the residual foci of rare-metal-granite melts, which are known as the petrological indicators of industrial ore deposits (Mo-W, Sn-W, Li-Ta-Be). According to the simulation results concerning the framework of a closed magmatic system with a complex multistage development history, the magmatic chamber has a lower underlying observable massif and a reservoir associated with it. A long-term magmatic differentiation of the parental melt (a source of rare-metal-granite melts and ore hydrothermal fluids) takes place in this reservoir.

KW - Altai

KW - Kalguty Mo-W deposit

KW - Mathematical modeling

KW - Novo-Akhmirov Li-Ta deposit

KW - Numerical simulation

KW - Rare-metal-granite deposit

KW - The thermal history of ore-magmatic systems

KW - Thermochronology

KW - rare-metal-granite deposit

KW - thermochronology

KW - the thermal history of ore-magmatic systems

KW - mathematical modeling

KW - numerical simulation

KW - Kalguty Mo-W deposit

KW - Novo-Akhmirov Li-Ta deposit

KW - Altai

KW - ORE-MAGMATIC SYSTEM

KW - PERMIAN-TRIASSIC MAGMATISM

KW - GORNY-ALTAI

KW - SPODUMENE PEGMATITES

KW - AGE

KW - EVOLUTION

KW - GEOCHEMISTRY

KW - TEMPERATURE

KW - BATHOLITH

KW - KAZAKSTAN

UR - http://www.scopus.com/inward/record.url?scp=85076623783&partnerID=8YFLogxK

UR - https://www.elibrary.ru/item.asp?id=38303716

U2 - 10.5800/GT-2019-10-2-0419

DO - 10.5800/GT-2019-10-2-0419

M3 - Article

AN - SCOPUS:85076623783

VL - 10

SP - 375

EP - 404

JO - Geodynamics and Tectonophysics

JF - Geodynamics and Tectonophysics

SN - 2078-502X

IS - 2

ER -