本文对中国西部喀喇昆仑-昆仑山地区通天桥火山岩、阿鲁克库勒的9号和10号次火山岩获得的^40Ar-^39Ar年龄分别为69.2Ma、1.00Ma和0.37Ma,邦达错橄榄玄武岩的K—Ar年龄为44Ma,据此对青藏高原北部地区火山作用的时空演化规律进行探讨。
The studies on dating of ^40Ar-39Ar showed that the dating results were 69.2 Ma, 1.00 Ma, 0.37 Ma and 44 Ma for the volcanic rocks at Tongtianqiao, Ashikule-Alukekule and Bangdacuo respectively. Based on them as well as other data, the time of the volcanic action and space-time evolution of the Cenozoic volcanism in northern Tibet were discussed.