Geochemistry, isotope triad (Nd–Sr–O), and 40Ar–39Ar age of Paleozoic alkaline mafic intrusions of the Kuznetsk Alatau (by the example of the Belaya Gora pluton)

V.V. Vrublevskii; O.M. Grinev; A.E. Izokh; A.V. Travin

doi:10.1016/j.rgg.2016.03.008

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Research Article| March 01, 2016

Geochemistry, isotope triad (Nd–Sr–O), and ⁴⁰Ar–³⁹Ar age of Paleozoic alkaline mafic intrusions of the Kuznetsk Alatau (by the example of the Belaya Gora pluton)

V.V. Vrublevskii;

V.V. Vrublevskii

^a

Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russia Tomsk State University pr. Lenina 36 Tomsk 634050 Russia

*

Corresponding author. E-mail address: [email protected] (V.V. Vrublevskii)

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O.M. Grinev;

O.M. Grinev

^a

Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russia Tomsk State University pr. Lenina 36 Tomsk 634050 Russia

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A.E. Izokh;

A.E. Izokh

^a

Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russia Tomsk State University pr. Lenina 36 Tomsk 634050 Russia

^b

V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences pr. Akademika Koptyuga 3 Novosibirsk 630090 Russia

^c

Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia Novosibirsk State University ul. Pirogova 2 Novosibirsk 630090 Russia

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A.V. Travin

^a

Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russia Tomsk State University pr. Lenina 36 Tomsk 634050 Russia

^b

V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences pr. Akademika Koptyuga 3 Novosibirsk 630090 Russia

^c

Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia Novosibirsk State University ul. Pirogova 2 Novosibirsk 630090 Russia

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Author and Article Information

V.V. Vrublevskii

^a

Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russia Tomsk State University pr. Lenina 36 Tomsk 634050 Russia

O.M. Grinev

^a

Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russia Tomsk State University pr. Lenina 36 Tomsk 634050 Russia

A.E. Izokh

^a

Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russia Tomsk State University pr. Lenina 36 Tomsk 634050 Russia

^b

V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences pr. Akademika Koptyuga 3 Novosibirsk 630090 Russia

^c

Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia Novosibirsk State University ul. Pirogova 2 Novosibirsk 630090 Russia

A.V. Travin

^a

Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russia Tomsk State University pr. Lenina 36 Tomsk 634050 Russia

^b

V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences pr. Akademika Koptyuga 3 Novosibirsk 630090 Russia

^c

Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia Novosibirsk State University ul. Pirogova 2 Novosibirsk 630090 Russia

*

Corresponding author. E-mail address: [email protected] (V.V. Vrublevskii)

Publisher: Novovsibirsk State University

Received: 28 Oct 2014

Accepted: 30 Jun 2015

First Online: 29 Mar 2021

Online ISSN: 1878-030X

Print ISSN: 1068-7971

IGM, Siberian Branch of the RAS

Russ. Geol. Geophys. (2016) 57 (3): 464–472.

https://doi.org/10.1016/j.rgg.2016.03.008

Abstract

We report the first data on ⁴⁰Ar/³⁹Ar dating, trace-element geochemistry, and isotope (Nd, Sr, O) composition of the Belaya Gora gabbro–foidolite–foyaite intrusive massif, one of typical representatives of the alkaline province of the northeastern Kuznetsk Alatau. The established age of rock-forming amphibole, ~401–403 Ma, is taken as the time of the pluton formation in the Early Devonian. The distribution and ratios of LILE and HFSE in the rocks suggest that the intrusion took place in the setting of “superposition” of Devonian mantle plume on the Early Paleozoic accretion–collision complexes. Therefore, the source of magmatic products had a heterogeneous composition as a result of mixing of plume material with the substances of suprasubduction and crustal substrates. The mantle component might have been a PREMA + EM combination, which is confirmed by the parameters of the Nd isotope composition (ɛ_NdT - 3.2-4.6; T_Nd(DM) - 0.8 Ga) of alkaline rocks. The effects of crustal contamination are reflected in the high ratios of strontium and oxygen isotopes (⁸⁷Sr/⁸⁸Sr)_T = 0.7046–0.7054; δ¹⁸O = 8.5–9.2‰, SMOW).

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Geochemistry, isotope triad (Nd–Sr–O), and ⁴⁰Ar–³⁹Ar age of Paleozoic alkaline mafic intrusions of the Kuznetsk Alatau (by the example of the Belaya Gora pluton)

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Geochemistry, isotope triad (Nd–Sr–O), and 40Ar–39Ar age of Paleozoic alkaline mafic intrusions of the Kuznetsk Alatau (by the example of the Belaya Gora pluton) Available to Purchase

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Geochemistry, isotope triad (Nd–Sr–O), and ⁴⁰Ar–³⁹Ar age of Paleozoic alkaline mafic intrusions of the Kuznetsk Alatau (by the example of the Belaya Gora pluton)