K-Ar ages of basic-acid dikes of the 118-323 km section of the Xinjiang-Tibet Highway in the West Kunlun

JI Wenhua1,3,ZHOU Hui2,LI Yamin4a1 College of Earth Sciences and Land Resources,China University of Geosciences,Beijing 100083,China,2 College of Earth and Spatial Science,Peking University,Beijing 100871,China,3 Shaanxi Institute of Geological Survey,Xianyang 712000,Shaanxi,China,4 College of Water Resources and Environment,China University of Geosciences,Beijing 100083,China

2005 Vol. 24, No. 3

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JI Wenhua1,3,ZHOU Hui2,LI Yamin4a1 College of Earth Sciences and Land Resources,China University of Geosciences,Beijing 100083,China,2 College of Earth and Spatial Science,Peking University,Beijing 100871,China,3 Shaanxi Institute of Geological Survey,Xianyang 712000,Shaanxi,China,4 College of Water Resources and Environment,China University of Geosciences,Beijing 100083,China. K-Ar ages of basic-acid dikes of the 118-323 km section of the Xinjiang-Tibet Highway in the West Kunlun[J]. Geological Bulletin of China, 2005, 24(3): 243-245.

Citation:

JI Wenhua1,3,ZHOU Hui2,LI Yamin4a1 College of Earth Sciences and Land Resources,China University of Geosciences,Beijing 100083,China,2 College of Earth and Spatial Science,Peking University,Beijing 100871,China,3 Shaanxi Institute of Geological Survey,Xianyang 712000,Shaanxi,China,4 College of Water Resources and Environment,China University of Geosciences,Beijing 100083,China. K-Ar ages of basic-acid dikes of the 118-323 km section of the Xinjiang-Tibet Highway in the West Kunlun[J]. Geological Bulletin of China, 2005, 24(3): 243-245.

K-Ar ages of basic-acid dikes of the 118-323 km section of the Xinjiang-Tibet Highway in the West Kunlun

JI Wenhua1,3,ZHOU Hui2,LI Yamin4a1 College of Earth Sciences and Land Resources,China University of Geosciences,Beijing 100083,China,2 College of Earth and Spatial Science,Peking University,Beijing 100871,China,3 Shaanxi Institute of Geological Survey,Xianyang 712000,Shaanxi,China,4 College of Water Resources and Environment,China University of Geosciences,Beijing 100083,China

Revised Date: 19 December 2003

Publish Date: 15 March 2005

Abstract

Abstract

Many dikes occur along the Xinjiang-Tibet Highway in the western segment of the West Kunlun. Those exposed in the field are lamprophyre, diabase, diorite and granite dikes. Whole-rock K-Ar dating of these dikes indicates that their emplacement ages may well correspond with tectonic events in the study area. The 273-280 Ma age of emplacement of diabase dikes corresponds with the timing of back-arc spreading and the 230-244 Ma age of emplacement of diorite and granite dikes corresponds with the timing of collisional orogeny.
- West Kunlun,dike,K-Ar dating

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