New 40Ar/39Ar and U/Pb Data Bearing on the Timing and Conditions of Paleozoic Metamorphism and Structural Development in the Qilian Orogen, Northwestern China

Willis Hames1, Hang Li2 and Chao Wang2, (1)Auburn University, Geosciences, Auburn, AL, United States, (2)Northwest University, Dept. of Geology, Xi'an, China