摘要
Two detrital zircons with the age of 3.9 Ga and 4.0 Ga have been dated from Late Devonian strata in Hexi Corridor by LA-ICP-MS method. The trace element characteristics of the zircons prove that the crust may exist on earth in the Hadean. Further, combined with previous paleontological and paleomagnetic results, the results indicate that the Hexi Corridor might have the affinity with northwestern Australia in the Late Devonian.