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Subduction polarity and collisional process are still controversial in the eastern Palaeo‐Tethys. On the basis of 1:50,000‐scale geological mapping at the Heni Township, zircon U–Pb geochronology and whole‐rock geochemistry were analysed for volcano‐sedimentary rocks in the eastern Yidun Micro‐block, Qinghai‐Tibet Plateau. Early Palaeozoic sequences were reported firstly in the eastern Yidun Micro‐block...
Tectonic transition from the Tethys to Palaeo‐Pacific regimes occurred during the Mesozoic in the South China Block. But the switching time and palaeogeographic pattern are still controversial. The Late Triassic to Middle Jurassic Longhai and Sandu basins along the NNE‐striking Chaling–Chenzhou–Linwu Fault were selected for provenance analysis and palaeogeographic reconstruction. Detrital zircons...
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