Rapakivi Granites and Associating Magmatism during the Aptian Development Phase of the Siberian Craton Active Continental Margin (Northeast Asia)

Standard

Rapakivi Granites and Associating Magmatism during the Aptian Development Phase of the Siberian Craton Active Continental Margin (Northeast Asia). / Vernikovskaya, A. E.; Fridovsky, V. Yu; Rodionov, N. V. et al.

In: Doklady Earth Sciences, Vol. 514, No. 2, 28.02.2024, p. 391-400.

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

BibTeX

@article{2d52106cb7fd43bd9d4b49581d874ab6,

title = "Rapakivi Granites and Associating Magmatism during the Aptian Development Phase of the Siberian Craton Active Continental Margin (Northeast Asia)",

abstract = "Abstract: New data on the U–Th–Pb geochronology, mineralogy, geochemistry, and Sm–Nd and Rb–Sr isotopes for granitoids and the associated subalkaline rocks of the Tarbagannakh pluton of the Allakh-Yun tectonic zone in the Verkhoyansk fold-and-thrust belt are presented. These rocks, including trachyandesibasalt dikes, combined into the Uemlyakh complex, were formed about 120 Ma from a continental crust source probably with input from an enriched mantle component. Rapakivi granites are reported for the first time among them; their origin is reference for understanding the geodynamic conditions of formation of rocks in this complex. A tectonic model for the formation of these rocks due to slab break-off during the development of the active continental margin in the Aptian age is proposed. It is discussed that this magmatism was conducive for the widespread development of metasomatic processes until the end of the Aptian age and was at the same time a source of the coinciding spatially gold mineralization of the Okhotsk–Koryak metallogenic belt.",

keywords = "Aptian age, Okhotsk–Koryak metallogenic belt, Siberian craton, Uda–Murgal volcanic arc, U–Pb geochronology, Verkhoyansk–Chukotka fold system, geochemistry, rapakivi granite",

author = "Vernikovskaya, {A. E.} and Fridovsky, {V. Yu} and Rodionov, {N. V.} and Matushkin, {N. Yu} and Kadilnikov, {P. I.} and Kudrin, {M. V.} and Tarasov, {Ya A.}",

note = "This work was supported by the Russian Science Foundation, project no. 22-27-00178.",

year = "2024",

month = feb,

day = "28",

doi = "10.1134/S1028334X23602869",

language = "English",

volume = "514",

pages = "391--400",

journal = "Doklady Earth Sciences",

issn = "1028-334X",

publisher = "PLEIADES PUBLISHING INC",

number = "2",

}

RIS

TY - JOUR

T1 - Rapakivi Granites and Associating Magmatism during the Aptian Development Phase of the Siberian Craton Active Continental Margin (Northeast Asia)

AU - Vernikovskaya, A. E.

AU - Fridovsky, V. Yu

AU - Rodionov, N. V.

AU - Matushkin, N. Yu

AU - Kadilnikov, P. I.

AU - Kudrin, M. V.

AU - Tarasov, Ya A.

N1 - This work was supported by the Russian Science Foundation, project no. 22-27-00178.

PY - 2024/2/28

Y1 - 2024/2/28

N2 - Abstract: New data on the U–Th–Pb geochronology, mineralogy, geochemistry, and Sm–Nd and Rb–Sr isotopes for granitoids and the associated subalkaline rocks of the Tarbagannakh pluton of the Allakh-Yun tectonic zone in the Verkhoyansk fold-and-thrust belt are presented. These rocks, including trachyandesibasalt dikes, combined into the Uemlyakh complex, were formed about 120 Ma from a continental crust source probably with input from an enriched mantle component. Rapakivi granites are reported for the first time among them; their origin is reference for understanding the geodynamic conditions of formation of rocks in this complex. A tectonic model for the formation of these rocks due to slab break-off during the development of the active continental margin in the Aptian age is proposed. It is discussed that this magmatism was conducive for the widespread development of metasomatic processes until the end of the Aptian age and was at the same time a source of the coinciding spatially gold mineralization of the Okhotsk–Koryak metallogenic belt.

AB - Abstract: New data on the U–Th–Pb geochronology, mineralogy, geochemistry, and Sm–Nd and Rb–Sr isotopes for granitoids and the associated subalkaline rocks of the Tarbagannakh pluton of the Allakh-Yun tectonic zone in the Verkhoyansk fold-and-thrust belt are presented. These rocks, including trachyandesibasalt dikes, combined into the Uemlyakh complex, were formed about 120 Ma from a continental crust source probably with input from an enriched mantle component. Rapakivi granites are reported for the first time among them; their origin is reference for understanding the geodynamic conditions of formation of rocks in this complex. A tectonic model for the formation of these rocks due to slab break-off during the development of the active continental margin in the Aptian age is proposed. It is discussed that this magmatism was conducive for the widespread development of metasomatic processes until the end of the Aptian age and was at the same time a source of the coinciding spatially gold mineralization of the Okhotsk–Koryak metallogenic belt.

KW - Aptian age

KW - Okhotsk–Koryak metallogenic belt

KW - Siberian craton

KW - Uda–Murgal volcanic arc

KW - U–Pb geochronology

KW - Verkhoyansk–Chukotka fold system

KW - geochemistry

KW - rapakivi granite

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:001145714500013

UR - https://www.mendeley.com/catalogue/2849b1f5-3b5d-314d-95e7-2311d682f301/

U2 - 10.1134/S1028334X23602869

DO - 10.1134/S1028334X23602869

M3 - Article

VL - 514

SP - 391

EP - 400

JO - Doklady Earth Sciences

JF - Doklady Earth Sciences

SN - 1028-334X

IS - 2

ER -

ID: 61235923