| Citation: |
ZHAO Hongju, BAI Yongshan, LIU Chun'e, JIA Xiaolong, ZHANG Hailong, CHEN Jian. Lithogeochemical Characteristics of Cretaceous Basic Dyke Swarm from Qimantag Region in East Kunlun and Its Geological Significance[J]. Northwestern Geology, 2018, 51(2): 1-8.
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Lithogeochemical Characteristics of Cretaceous Basic Dyke Swarm from Qimantag Region in East Kunlun and Its Geological Significance
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Abstract
The firstly discovered diabase dykes swarm in Qimantag region of East Kunlun has high TiO2 (1.65%~2.87%) and alkali (2.98%~5.32%) contents, belonging to alkalic basalt series. LA-MC-ICP-MS zircon U-Pb dating of diabase dyke (porphyrite) has obtained an age of 102 Ma, while its Sm-Nd isochron age is (120±8.3)Ma. Therefore, it's confirmed that the early Cretaceous diabase dike is existed in Qimantag region, East Kunlun,and the area had entered the intracontinental extension stage in early Cretaceous.-
Keywords:
- Qimantag region in East Kunlun /
- Cretaceous /
- basic dyke swarm
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References
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ZHAO Hongju, BAI Yongshan, LIU Chun'e, JIA Xiaolong, ZHANG Hailong, CHEN Jian. Lithogeochemical Characteristics of Cretaceous Basic Dyke Swarm from Qimantag Region in East Kunlun and Its Geological Significance[J]. Northwestern Geology, 2018, 51(2): 1-8.
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