Thermomechanical Modeling of the Formation of Multi-Сhamber Intrusions for Identifying the Relationship of Plutonic Metamorphism with Gabbro-Diorite Massifs of Western Sangilen, Tuva, Russia

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Thermomechanical Modeling of the Formation of Multi-Сhamber Intrusions for Identifying the Relationship of Plutonic Metamorphism with Gabbro-Diorite Massifs of Western Sangilen, Tuva, Russia. / Polyansky, O. P.; Izokh, A. E.; Semenov, A. N. et al.

In: Geotectonics, Vol. 55, No. 1, 01.2021, p. 1-19.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{1c127d65c2974edfb8c4b6e71794d5cc,

title = "Thermomechanical Modeling of the Formation of Multi-Сhamber Intrusions for Identifying the Relationship of Plutonic Metamorphism with Gabbro-Diorite Massifs of Western Sangilen, Tuva, Russia",

abstract = "For the first time, a thermomechanical model of a system of multilevel magma chambers above a mantle heat source has been developed to explain the formation mechanisms of intrusive complexes and metamorphic aureoles in Western Sangilen. A model of “thermal blur” at the collision stage and a model of a local magma reservoir at the transtension stage are proposed. The magmatic process was studied using a numerical thermomechanical model of the system magma reservoir–magma transport–formation of intermediate chambers–formation of metamorphic zonal complexes around intrusions at different depth levels. Modeling explains the mosaic distribution of granulite metamorphism zones in the Sangilen block. Model estimates of the duration of intrusive processes were obtained. The change in tectonic regimes in the evolution of Western Sangilen affects the depth of emplacement of gabbro–monzodiorite massifs and surrounding metamorphic aureoles.",

keywords = "intrusion, magma chamber, melting, numerical modeling, plutonic metamorphism, Sangilen, thermal aureole, thermomechanical model",

author = "Polyansky, {O. P.} and Izokh, {A. E.} and Semenov, {A. N.} and Selyatitskii, {A. Yu} and Shelepaev, {R. A.} and Egorova, {V. V.}",

note = "Funding Information: The work was carried out under a state contract for the Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, and was supported by the Russian Foundation for Basic Research (project no. 17-05-00848). Publisher Copyright: {\textcopyright} 2021, Pleiades Publishing, Inc. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",

year = "2021",

month = jan,

doi = "10.1134/S001685212101009X",

language = "English",

volume = "55",

pages = "1--19",

journal = "Geotectonics",

issn = "0016-8521",

publisher = "Maik Nauka-Interperiodica Publishing",

number = "1",

}

RIS

TY - JOUR

T1 - Thermomechanical Modeling of the Formation of Multi-Сhamber Intrusions for Identifying the Relationship of Plutonic Metamorphism with Gabbro-Diorite Massifs of Western Sangilen, Tuva, Russia

AU - Polyansky, O. P.

AU - Izokh, A. E.

AU - Semenov, A. N.

AU - Selyatitskii, A. Yu

AU - Shelepaev, R. A.

AU - Egorova, V. V.

N1 - Funding Information: The work was carried out under a state contract for the Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, and was supported by the Russian Foundation for Basic Research (project no. 17-05-00848). Publisher Copyright: © 2021, Pleiades Publishing, Inc. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/1

Y1 - 2021/1

N2 - For the first time, a thermomechanical model of a system of multilevel magma chambers above a mantle heat source has been developed to explain the formation mechanisms of intrusive complexes and metamorphic aureoles in Western Sangilen. A model of “thermal blur” at the collision stage and a model of a local magma reservoir at the transtension stage are proposed. The magmatic process was studied using a numerical thermomechanical model of the system magma reservoir–magma transport–formation of intermediate chambers–formation of metamorphic zonal complexes around intrusions at different depth levels. Modeling explains the mosaic distribution of granulite metamorphism zones in the Sangilen block. Model estimates of the duration of intrusive processes were obtained. The change in tectonic regimes in the evolution of Western Sangilen affects the depth of emplacement of gabbro–monzodiorite massifs and surrounding metamorphic aureoles.

AB - For the first time, a thermomechanical model of a system of multilevel magma chambers above a mantle heat source has been developed to explain the formation mechanisms of intrusive complexes and metamorphic aureoles in Western Sangilen. A model of “thermal blur” at the collision stage and a model of a local magma reservoir at the transtension stage are proposed. The magmatic process was studied using a numerical thermomechanical model of the system magma reservoir–magma transport–formation of intermediate chambers–formation of metamorphic zonal complexes around intrusions at different depth levels. Modeling explains the mosaic distribution of granulite metamorphism zones in the Sangilen block. Model estimates of the duration of intrusive processes were obtained. The change in tectonic regimes in the evolution of Western Sangilen affects the depth of emplacement of gabbro–monzodiorite massifs and surrounding metamorphic aureoles.

KW - intrusion

KW - magma chamber

KW - melting

KW - numerical modeling

KW - plutonic metamorphism

KW - Sangilen

KW - thermal aureole

KW - thermomechanical model

UR - http://www.scopus.com/inward/record.url?scp=85105834663&partnerID=8YFLogxK

U2 - 10.1134/S001685212101009X

DO - 10.1134/S001685212101009X

M3 - Article

AN - SCOPUS:85105834663

VL - 55

SP - 1

EP - 19

JO - Geotectonics

JF - Geotectonics

SN - 0016-8521

IS - 1

ER -

ID: 28563977