GIN: auto 0cm" class=MsoNormal>g=EN-US>A large quantity of Paleoproterozoic metamorphic intrusive rocks and khondalites (in Dunhuang Group) were identified from basal metamorphic rocks in the Agetashtag area, southeastern margin of Tarim Basin. The Paleoproterozoic granite (metamorphic intrusive rocks) differs from the Neoarchean TTG rocks in amphibolite facies metamorphism, non-sodium migmatization, and obvious boundary with Milan Group. In summary, this geochronological framework suggests that the geological development of Tarim craton has some affinity to the North China craton at early pre-Cambrian, and both of them belong to the Nena supercontinent group and involved into the convergence of Paleoproterzoic Columbia supercontinent.