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Adakitic dikes are widespread in the Sawur region, northern West Junggar, northwestern China. Zircon U–Pb analyses of the dikes have yielded consistent ages of ca. 334Ma. The dikes are characterized by relatively high SiO2 (55.5–61.8wt.%), Al2O3 (14.5–16.3wt.%), and Sr (468–1005ppm), and low Y (10.1–14.1ppm) and Yb (0.93–1.39ppm) contents, with high Sr/Y (34–74) ratios and slight Eu anomalies, which...
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