TY - JOUR

T1 - Evolution of the Meyeri Thrust Zone of the Northern Ladoga Region (Republic of Karelia, Northwest Russia)

T2 - PT Conditions for the Formation of Mineral Parageneses and Geodynamic Reconstructions

AU - Baltybaev, Sh K.

AU - Vivdich, E. S.

N1 - Publisher Copyright: © 2021, Pleiades Publishing, Inc.

PY - 2021/7

Y1 - 2021/7

N2 - Abstract—: In our study we characterize the thermodynamic regimes in the thrust zone of the newly formed Paleoproterozoic continental crust of the Svecofennian mobile belt on the outskirts of the Archean Karelian continent along the sublatitudinal, in modern coordinates, powerful strike-slip zone of the Northern Ladoga area. The Meyeri thrust zone is divided into northern and southern domains, considered allochthonous and autochthonous blocks according to material composition and structural features. The autochthonous block of the northern domain is different from the allochthonous block of the southern one by the presence of gneiss domes with Archean rocks in the cores. The allochthonous block is composed only of Paleoproterozoic rocks. During the formation of the thrust zone 1.86–1.85 Ga ago, the low-temperature amphibolite facies of biotite–muscovite parageneses were developed after the early mineral parageneses of the high-temperature amphibolite and granulite facies.

AB - Abstract—: In our study we characterize the thermodynamic regimes in the thrust zone of the newly formed Paleoproterozoic continental crust of the Svecofennian mobile belt on the outskirts of the Archean Karelian continent along the sublatitudinal, in modern coordinates, powerful strike-slip zone of the Northern Ladoga area. The Meyeri thrust zone is divided into northern and southern domains, considered allochthonous and autochthonous blocks according to material composition and structural features. The autochthonous block of the northern domain is different from the allochthonous block of the southern one by the presence of gneiss domes with Archean rocks in the cores. The allochthonous block is composed only of Paleoproterozoic rocks. During the formation of the thrust zone 1.86–1.85 Ga ago, the low-temperature amphibolite facies of biotite–muscovite parageneses were developed after the early mineral parageneses of the high-temperature amphibolite and granulite facies.

KW - Archaean

KW - geodynamic reconstructions

KW - geothermobarometry

KW - Keywords: thrust zone

KW - Paleoproterozoic

KW - parageneses

KW - PT conditions

UR - http://www.scopus.com/inward/record.url?scp=85118723034&partnerID=8YFLogxK

U2 - 10.1134/S0016852121040038

DO - 10.1134/S0016852121040038

M3 - Article

AN - SCOPUS:85118723034

VL - 55

SP - 502

EP - 515

JO - Geotectonics

JF - Geotectonics

SN - 0016-8521

IS - 4

ER -