Abstract
There are several large intrusions composed of 60–90% leucogranites within Eastern Kazakhstan. The age of intrusions was determined that allows to conclude about the two stages of leucogranite intrusive magmatism: (1) in the Early Permian and (2) in the Early Triassic. Their formation occurred in an post-orogenic or intraplate geodynamic setting. The geochemical features of the leucogranites were considered that allows to conclude about the petrogenetic mechanisms of leucogranite magmas forming. They were formed as a result of partial melting of crustal substrates under the thermal influence of mafic magmas. Geochemical differences of leucogranites were due to different compositions of crustal substrates and different degrees of their melting.
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Funding
This research was supported by the Russian Science Foundation (Project no. 21-17-00175). Also this research carried out on a government assignment to the V.S. Sobolev Institute of Geology and Mineralogy (IGM SB RAS, Novosibirsk).
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Khromykh, S.V., Kotler, P.D. & Kruk, N.N. Leucogranite Intrusions in Eastern Kazakhstan: Age, Composition and Mechanisms of Formation. Dokl. Earth Sc. 515, 645–651 (2024). https://doi.org/10.1134/S1028334X23603693
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DOI: https://doi.org/10.1134/S1028334X23603693