Gems and Gem Minerals - World Globetrotters
The height range is 78?98 km at Wuhan and 70?98 km at Adelaide. ... fluvial-?lacustrine sediments, is an ideal natural laboratory to test this hypothesis. ... It thus appears that at some point in the mid-Miocene there was a transition where the field ... using an isochron correction scheme for a sequential acid-leach procedure.