Determination of tectonic uplift rates of Qinling mountains in central China by fission tracks

Fission track dating of apatite from granites collected at six elevations a t Taibai mountains, Qinling range, central China has been carried out, The ages of apatites range from 31.3 to 40.5 Ma in sequence consistent with ele vations from 1320 to 3760 m above sea level. The age-elevation plot suggest s the presence of a break in slope, which may represent the base of an exhu med palaeo partial annealing zone (PAZ). Further work on track length measu rements is urged for confirmation of this preliminary inference. (C) 2001 E lsevier Science Ltd. All rights reserved.