Riftogenic magmatism of western part of the Early Mesozoic Mongolian–Transbaikalian igneous province: Results of geochronological studies

V. V. Yarmolyuk, A. M. Kozlovsky, E. B. Salnikova, A. V. Travin, E. A. Kudryashova

Результат исследования: Научные публикации в периодических изданияхстатья

5 Цитирования (Scopus)

Аннотация

Geochronological studies of rocks from a bimodal high-alkali volcanic–plutonic complex collected in the area of Kharkhorin zone of the Early Mesozoic Mongolian–Transbaikalian igneous province (MTIP) are made. The age of alkali granites from Olziit sum is 211 ± 1 Ma (U–Pb ID-TIMS on zircon) to 209 ± 2 and 217 ± 4 Ma (40Ar/39Ar on alkali amphibole); the age of alkali granite-porphyries from the area of Sant sum is 206 ± 1 Ma (U–Pb ID-TIMS on zircon). These rock series formed syncronously to the analogous magmatism episode in the Northern Gobi and Western Transbaikalian rift zones of the MTIP. The similarity of the age and composition of igneous associations of the MTIP suggests a common mechanism of its formation related to the effect of a mantle plume on the continental lithosphere at the base of the entire igneous zone having a zonal structure.

Язык оригиналаанглийский
Страницы (с-по)872-876
Число страниц5
ЖурналDoklady Earth Sciences
Том475
Номер выпуска2
DOI
СостояниеОпубликовано - 1 авг 2017

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