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Granitoid magmatism is extensively developed in the Altai Superterrane, but the timing of magmatic events is not so well determined. In this study, twelve granitoid intrusions from Southwest Mongolia were dated by the zircon U–Pb method and analyzed for zircon Hf isotopic compositions. The new age data indicated three phases of magmatic emplacement: Middle Paleozoic (398–350Ma), Late Paleozoic (317–289Ma)...
Intra-oceanic subduction has been taken as one of the most important contributors to the crustal growth of the immense Central Asian Orogenic Belt (CAOB), however, the detailed geological processes of the development and growth of numerous island arcs still remain unclear. In order to explore the development history of representative ancient island arcs, we have conducted geochronological and geochemical...
The high-grade metamorphic Tseel Terrane in southwestern Mongolia is dominated by a strongly deformed sequence of migmatitic gneisses which has previously been interpreted as an early Precambrian continental sliver. However, the protolith age and timing of high-grade metamorphism remain poorly constrained. To resolve this problem, high-grade gneisses selected from the western Tseel Terrane were dated...
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