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Academic Journal
Mineralogy, geochemistry and conditions of formation Permian-Triassic intraplate granitoids of Sinyushenskiy Massif (Gorny Altai)
N. N. Kruk, O. A. Gavrushkina, C. G. Shokalskiy, A. V. Travin
Литосфера, Vol 0, Iss 2, Pp 5-23 (2016)
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| Title | Mineralogy, geochemistry and conditions of formation Permian-Triassic intraplate granitoids of Sinyushenskiy Massif (Gorny Altai) |
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| Authors | N. N. Kruk, O. A. Gavrushkina, C. G. Shokalskiy, A. V. Travin |
| Publication Year |
2016
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| Source |
Литосфера, Vol 0, Iss 2, Pp 5-23 (2016)
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| Description |
The data on geological settings, ages, special features of mineralogy and composition of Sinyushensky Massif granitoids the in north-west part of the Gorny Altay region. The age of the Sinyushensky Massif rocks is 248 ± 0.7 Ma (Ar-Ar dating by biotite). This massif belongs to Permo-Triassic Siberian large igneous province. Sinyushensky Massif granit-leucogranites are drastically different from typical intra-plate A-type granitoids. They correspond to S-type granitoids by mineralogy and petrochemical characteristics, and are characterised by the increased fluorine and LILE concentrations. Nd isotopic composition corresponds to that of the metasedimentary rocks of the north-west Altay’s upper crust. The formation of Sinyushensky Massif granitoids melts was the consequence of continental crust rocks melting. The enrichment by LILE and Ce-group REE associates with the influence of deep fluids caused selective melting of mica and accessory minerals.
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| Document Type |
article
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| Language |
English
Russian |
| Publisher Information |
A.N. Zavaritsky Institute of Geology and Geochemistry, 2016.
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| Subject Terms | |
