Geological Structure of the Novaya Zemlya Archipelago (West Russian Arctic) and Peculiarities of the Tectonics of the Eurasian Arctic. / Korago, E. A.; Kovaleva, G. N.; Schekoldin, R. A.; Il’in, V. F.; Gusev, E. A.; Krylov, A. A.; Gorbunov, D. A.
In: Geotectonics, Vol. 56, No. 2, 01.04.2022, p. 123-156.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Geological Structure of the Novaya Zemlya Archipelago (West Russian Arctic) and Peculiarities of the Tectonics of the Eurasian Arctic
AU - Korago, E. A.
AU - Kovaleva, G. N.
AU - Schekoldin, R. A.
AU - Il’in, V. F.
AU - Gusev, E. A.
AU - Krylov, A. A.
AU - Gorbunov, D. A.
PY - 2022/4/1
Y1 - 2022/4/1
N2 - Abstract: Our study considers the structure and tectonics of the Novaya Zemlya archipelago, located in the west Russian Arctic and part of the Eurasian Arctic: (i) the age of the Pre-Paleozoic basement of the North block of the archipelago and the geodynamic sedimentation conditions in its northern end, where many kilometers of turbidite sedimentary strata accumulated in the paleobasin during the Late Vendian-Silurian; (ii) the significance of Caledonian tectogenesis in the geological history of the archipelago; (iii) the age and causes of the Late Hercynian (?)-Early Cimmerian orogeny in the Novaya Zemlya archipelago and the relationship of the archipelago structures with the structures of the Urals; (iv) the age and causes for the formation of the modern relief of the Novaya Zemlya archipelago; (v) evidence of active movements of the shelves of the Barents and Kara Seas surrounding Novaya Zemlya. The age of the most ancient rock dating in the area of the Main Novaya Zemlya Fault corresponds to the Vendian (598 ± 26; 609 ± 4 Ma), and the model age of the protolith is estimated at 1 Ga. Two blocks have been established for the Precambrian (North and South) and three, for Middle-Late Paleozoic (North, Central and South). The Middle-Late Paleozoic stage is considered as a reflection of the tectonic-magmatic activation manifested in the Caledonides of Greenland and Scandinavia. The episodes of basic and granitoid magmatism in the intervals of 730–690 and 610–590 Ma indicate the presence of blocks of the former Arctida (?) in the west (Novaya Zemlya), in the central part (Severnaya Zemlya), and in the east (New Siberian Islands and Wrangel Island) of the modern Arctic. Basic areal (plume) magmatism occurred in the Late Devonian, in the Late Permian-Early Triassic and Late Mesozoic. The features of the geological structure of the Novaya Zemlya archipelago strictly correspond to the three orographic areas (tectonic blocks) of the archipelago. The Western and Eastern Novaya Zemlya troughs are the tectonic pairs with the Novaya Zemlya orogen. The heights of the dated sea terraces indicate significant rates of neotectonic uplift of the archipelago.
AB - Abstract: Our study considers the structure and tectonics of the Novaya Zemlya archipelago, located in the west Russian Arctic and part of the Eurasian Arctic: (i) the age of the Pre-Paleozoic basement of the North block of the archipelago and the geodynamic sedimentation conditions in its northern end, where many kilometers of turbidite sedimentary strata accumulated in the paleobasin during the Late Vendian-Silurian; (ii) the significance of Caledonian tectogenesis in the geological history of the archipelago; (iii) the age and causes of the Late Hercynian (?)-Early Cimmerian orogeny in the Novaya Zemlya archipelago and the relationship of the archipelago structures with the structures of the Urals; (iv) the age and causes for the formation of the modern relief of the Novaya Zemlya archipelago; (v) evidence of active movements of the shelves of the Barents and Kara Seas surrounding Novaya Zemlya. The age of the most ancient rock dating in the area of the Main Novaya Zemlya Fault corresponds to the Vendian (598 ± 26; 609 ± 4 Ma), and the model age of the protolith is estimated at 1 Ga. Two blocks have been established for the Precambrian (North and South) and three, for Middle-Late Paleozoic (North, Central and South). The Middle-Late Paleozoic stage is considered as a reflection of the tectonic-magmatic activation manifested in the Caledonides of Greenland and Scandinavia. The episodes of basic and granitoid magmatism in the intervals of 730–690 and 610–590 Ma indicate the presence of blocks of the former Arctida (?) in the west (Novaya Zemlya), in the central part (Severnaya Zemlya), and in the east (New Siberian Islands and Wrangel Island) of the modern Arctic. Basic areal (plume) magmatism occurred in the Late Devonian, in the Late Permian-Early Triassic and Late Mesozoic. The features of the geological structure of the Novaya Zemlya archipelago strictly correspond to the three orographic areas (tectonic blocks) of the archipelago. The Western and Eastern Novaya Zemlya troughs are the tectonic pairs with the Novaya Zemlya orogen. The heights of the dated sea terraces indicate significant rates of neotectonic uplift of the archipelago.
KW - age of the Precambrian basement
KW - and Late Mesozoic
KW - basic and granitoid magmatism of the Late Precambrian
KW - Eurasian Arctic
KW - geomorphology
KW - granitoids of the Mityushev Kamen and Zapasov Mountain
KW - marine terraces
KW - Novaya Zemlya archipelago
KW - Novaya Zemlya orogen
KW - orography
KW - Permian-Triassic
KW - plume magmatism of the Devonian
KW - Quaternary deposits
UR - http://www.scopus.com/inward/record.url?scp=85133007595&partnerID=8YFLogxK
U2 - 10.1134/S0016852122020030
DO - 10.1134/S0016852122020030
M3 - Article
AN - SCOPUS:85133007595
VL - 56
SP - 123
EP - 156
JO - Geotectonics
JF - Geotectonics
SN - 0016-8521
IS - 2
ER -
ID: 110884722