A New Ectasian Event of Basitic Magmatism in the Southern Siberian Craton

A New Ectasian Event of Basitic Magmatism in the Southern Siberian Craton

On the basis of U–Pb dating of zircon and baddeleyite from gabbro–dolerite of the Goloustnaya dyke swarm (southern margin of the Siberian Craton), the age of basites was established as 1338.0 ± 2.9 Ma. It is shown that the basite intrusions of close ages from the Goloustnaya and Listvyanka areas (so...

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Veröffentlicht in:Doklady earth sciences 2019-05, Vol.486 (1), p.507-511
Hauptverfasser: Gladkochub, D. P., Donskaya, T. V., Ernst, R. E., Hamilton, M. A., Mazukabzov, A. M., Pisarevsky, S. A., Kamo, S.
Format: Artikel
Sprache:eng
Schlagworte:
Cratons
Earth
Earth and Environmental Science
Earth Sciences
Gabbro
Geological time
Geology
Magma
Magmatism
Mantle
Mantle plumes
Radiometric dating
Rock intrusions
Zircon
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Zusammenfassung:On the basis of U–Pb dating of zircon and baddeleyite from gabbro–dolerite of the Goloustnaya dyke swarm (southern margin of the Siberian Craton), the age of basites was established as 1338.0 ± 2.9 Ma. It is shown that the basite intrusions of close ages from the Goloustnaya and Listvyanka areas (southern Siberian Craton) and Victoria Island (northern Laurentia, Barking Dog complex) could have been formed under the influence of the same mantle plume and belong to the same Large Igneous Province of Ectasian (Middle Mesoproterozoic) age.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X19050222