The Discovery of Qingbaikouan Plutonite in Taxorgan, Xinjiang, and Evidence from Zircon LA-ICP-MS U-Pb Dating of Intrusive Rock
摘要
In the period of 1∶50000 field mapping, precambrian strata was distinguished from the Lower Paleozoic strata, intruding the Neoproterozoic tonalite pluton. In situ zircon U-Pb LA-ICP-MS dating on the tonalite pluton zircons yielded an age of the 855±14Ma and 836±12Ma, representing the tonalite pluton intruding age and being the only Neoproterozoic age in Karakorum belt, which is important in studying of Karakorum Precambrian geological evolution.