TY - JOUR

T1 - Late paleozoic–early mesozoic granite magmatism on the arctic margin of the siberian craton during the kara-siberia oblique collision and plume events

AU - Vernikovsky, Valery A.

AU - Vernikovskaya, Antonina

AU - Proskurnin, Vasilij

AU - Matushkin, Nikolay

AU - Proskurnina, Maria

AU - Kadilnikov, Pavel

AU - Larionov, Alexander

AU - Travin, Alexey

N1 - Funding: This research was financially supported by the Russian Science Foundation, grant no. 19-17-00091; and by the Russian Foundation for Basic Research, grants numbers 18-05-70035 and 20-05-00360.

PY - 2020/6/1

Y1 - 2020/6/1

N2 - We present new structural, petrographic, geochemical and geochronological data for the late Paleozoic–early Mesozoic granites and associated igneous rocks of the Taimyr Peninsula. It is demonstrated that large volumes of granites were formed due to the oblique collision of the Kara microcontinent and the Siberian paleocontinent. Based on U-Th-Pb isotope data for zircons, we identify syncollisional (315–282 Ma) and postcollisional (264–248 Ma) varieties, which differ not only in age but also in petrochemical and geochemical features. It is also shown that as the postcollisional magmatism was coming to an end, Siberian plume magmatism manifested in the Kara orogen and was represented by basalts and dolerites of the trap formation (251–249 Ma), but also by differentiated and individual intrusions of monzonites, quartz monzonites and syenites (Early–Middle Triassic) with a mixed crustal-mantle source. We present a geodynamic model for the formation of the Kara orogen and discuss the relationship between collisional and trap magmatism.

AB - We present new structural, petrographic, geochemical and geochronological data for the late Paleozoic–early Mesozoic granites and associated igneous rocks of the Taimyr Peninsula. It is demonstrated that large volumes of granites were formed due to the oblique collision of the Kara microcontinent and the Siberian paleocontinent. Based on U-Th-Pb isotope data for zircons, we identify syncollisional (315–282 Ma) and postcollisional (264–248 Ma) varieties, which differ not only in age but also in petrochemical and geochemical features. It is also shown that as the postcollisional magmatism was coming to an end, Siberian plume magmatism manifested in the Kara orogen and was represented by basalts and dolerites of the trap formation (251–249 Ma), but also by differentiated and individual intrusions of monzonites, quartz monzonites and syenites (Early–Middle Triassic) with a mixed crustal-mantle source. We present a geodynamic model for the formation of the Kara orogen and discuss the relationship between collisional and trap magmatism.

KW - Carboniferous

KW - Geochemistry

KW - Granites

KW - Kara microcontinent

KW - Kara orogen

KW - Oblique collision

KW - Permian

KW - Petrography

KW - Siberian Craton

KW - Siberian plume

KW - Triassic

KW - U-Th-Pb andAr/Ar geochronology

KW - RAPID ERUPTION

KW - SEVERNAYA-ZEMLYA-ARCHIPELAGO

KW - RODINIA

KW - TRACE-ELEMENT

KW - granites

KW - petrography

KW - PALEOMAGNETIC DATA

KW - TECTONIC EVOLUTION

KW - NOVAYA-ZEMLYA

KW - geochemistry

KW - NORTHERN RUSSIA

KW - carboniferous

KW - Ar-39 geochronology

KW - CENTRAL-TAIMYR

KW - REGION

KW - oblique collision

KW - U-Th-Pb and(40)Ar

UR - http://www.scopus.com/inward/record.url?scp=85087176455&partnerID=8YFLogxK

UR - https://elibrary.ru/item.asp?id=43302210

U2 - 10.3390/min10060571

DO - 10.3390/min10060571

M3 - Article

AN - SCOPUS:85087176455

VL - 10

SP - 1

EP - 39

JO - Minerals

JF - Minerals

SN - 2075-163X

IS - 6

M1 - 571

ER -