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Upper Ordovician to Silurian strata along the northeastern margin of the Yangtze Block, South China Craton, were deposited in a syn-orogenic basin related to the Early Paleozoic Kwangsian Orogeny in the adjoining Cathaysia Block. U–Pb age data for 450 detrital zircons from six sandstones samples range in age from Archean to the early Paleozoic. All samples have a dominant age peak between 0.8 and...
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