Two-stage formation of the alcaline volcano-plutonic complexes in the Ketkap-Yuna igneous province of the Aldan Shield: New isotopic data

The two-stage formation of the alcaline volcano-plutonic complexes in the Ketkap-Yuna igneous province of the Aldan Shield was investigated. The oldest alkaline rocks of the KetkapYuna igneous province (125126 Ma) are reliably documented as a volcanic facies in the Bokur and Ulakhan calderas (Ulakha...

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Published inDoklady earth sciences Vol. 459; no. 1; pp. 1322 - 1327
Main Authors Polin, V. F., Glebovitskii, V. A., Mitsuk, V. V., Kiselev, V. I., Budnitskiy, S. Yu, Travin, A. V., Rizvanova, N. G., Barinov, N. N., Ekimova, N. I., Ponomarchuk, A. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.11.2014
Springer
Springer Nature B.V
Subjects
Earth and Environmental Science
Earth Sciences
Geochemistry
Geology
Igneous rocks
Isotopes
Petrology
Volcanoes
Russia, Siberia, Aldan Shield
DOKLADY Earth Science
Albian
Alkaline Rock
Coniacian
Nepheline
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Summary:The two-stage formation of the alcaline volcano-plutonic complexes in the Ketkap-Yuna igneous province of the Aldan Shield was investigated. The oldest alkaline rocks of the KetkapYuna igneous province (125126 Ma) are reliably documented as a volcanic facies in the Bokur and Ulakhan calderas (Ulakhan massif). The thin sills and dike swarms composed of variable alkaline rocks of the alkalinebasic composition including melanite bearing varieties were intruded in the UsmunDarya massif almost synchronously with the formation of volcanics or, probably, after a brief recess.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X14110051