Zircon U-Pb dating and Lu-Hf isotopes, whole-rock geochemistry and Sr-Nd isotopic data of of the samples in northern Thailand.

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This study presents systematic analytical data for Ordovician rhyolite samples from northern Thailand, including: Table 1 LA-ICPMS zircon U-Pb dating results; Table 2 zircon in-situ Lu–Hf isotopic compositions; Table 3 whole-rock geochemical data; and Table 4 whole-rock Nd isotopic compositions. Together, these data provide a comprehensive dataset for constraining the formation age, magmatic source characteristics, and geochemical signature of these rocks.

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