Petrogenesis of A-type leucocratic granite magmas: An example from Delbegetei massif, Eastern Kazakhstan

Khromykh, Sergey V.; Khokhryakova, Olga A.; Kruk, Nickolay N.; Sokolova, Ekaterina N.; Kotler, Pavel D.; Smirnov, Sergey Z.; Oitseva, Tatiana A.; Semenova, Dina V.; Naryzhnova, Anna V.; Volosov, Alexey S.; Kuzmina, Oxana N.; Ageeva, Olga V.; Mizernaya, Marina A.; Larionova, Xeniya Y.; Aitbayeva, Saltanat S.; Bissatova, Ainel Y.; Каpzhaparova, Zhanar Z.; Senko, Arseniy D.

doi:10.1016/j.lithos.2024.107696

Lithos

2024

DOI: 10.1016/j.lithos.2024.107696

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Petrogenesis of A-type leucocratic granite magmas: An example from Delbegetei massif, Eastern Kazakhstan

Sergey V. Khromykh,

Olga A. Khokhryakova,

Nickolay N. Kruk

et al.

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Investigating the Orogenic Evolution of the Wushan–Shangdan Ocean in the Qinling–Qilian Conjunction Zone: Insights from the Early Devonian Tailu Pluton

Lin,

Li,

Pei

et al. 2024

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The main ocean–continent transformation stage of the Qinling and Qilian conjunction zone happened in the Early Paleozoic with the occurrence of a lot of subduction–collision–related magmatic rocks. However, there is still considerable controversy over the duration of the subduction–collision orogeny process of the Proto-Tethys Ocean, here termed as the Wushan–Shangdan Ocean. We provide geochronological, geochemical, and Lu-Hf isotopic data for typical Early Devonian igneous rocks there, named Tailu pluton. The Tailu pluton at 410 Ma comprised K-rich, calc-alkaline, metaluminous A-type granite with low Y/Nb ratios (0.85 to 1.35) and A/CNK values (0.90 to 1.01); with high SiO2 contents (65.44 to 74.46 wt%), Mg# values (39.2 to 50.7), and zircon saturation temperatures (745 to 846 °C); and with negative εHf (t) values (−8.0 to −1.9); therefore, they resulted from the partial melting of the ancient felsic lower crust accompanied by the incorporation of mantle-derived material during the intraplate magmatism process. Research on Tailu pluton has provided more sufficient evidence for the evolution process of the Qinling–Qilian conjunction zone in the Early Paleozoic, associated with evolution of the Wushan–Shangdan Ocean, the northern part of the Proto-Tethys Ocean.

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Investigating the Orogenic Evolution of the Wushan–Shangdan Ocean in the Qinling–Qilian Conjunction Zone: Insights from the Early Devonian Tailu Pluton

Lin,

Li,

Pei

et al. 2024

Minerals

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show abstract

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Petrogenesis of A-type leucocratic granite magmas: An example from Delbegetei massif, Eastern Kazakhstan

Cited by 1 publication

References 65 publications

Investigating the Orogenic Evolution of the Wushan–Shangdan Ocean in the Qinling–Qilian Conjunction Zone: Insights from the Early Devonian Tailu Pluton

Investigating the Orogenic Evolution of the Wushan–Shangdan Ocean in the Qinling–Qilian Conjunction Zone: Insights from the Early Devonian Tailu Pluton

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