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《Atomic Energy Science and Technology》 2018-01
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Apatite Fission Track Thermochronology and Tectonic Significance in Aikeng Area,East Kunlun Mountains

WANG Ke;YUAN Wanming;FENG Xing;HAO Nana;FENG Yunlei;ZHANG Aikui;Science Research Institute,China University of Geosciences;No.3 Exploration Institute of Geology and Mineral Resources of Qinghai Province;  
East Kunlun Mountains is located in the northern margin of Tibetan Plateau,and Aikeng is situated between Mid-Kunlun fault zone and South-Kunlun fault zone.Using apatite fission track thermochronology,the datings of five samples were analyzed,and they are(99±10),(103±9),(80±6),(98±6)and(65±5)Ma respectively.There are three stages of thermal history.The first stage(160-58 Ma)fits in with that the Qiangtang block and the Lhasa block squeeze the Eurasian plate,and the second stage(58-35 Ma)corresponds to the collision between India plate and Eurasia plate.For the last stage(35 Ma to now),because of the stable tectonic activity,it is consideredthat it is not affected by the thermal events of the Tibetan Plateau since Neogene.In accordance with the results based on the three stages of thermal history,the formular calculations for the five samples have their rock uplifts of 3 374,3 283,3 230,3 157 and3 278 m,the average rock uplift is 3 264 m,and the average uplifting rate is 0.038 mm/a.
【Fund】: 国家重点基础研究发展计划资助项目(2015CB452600 2015CB452606);; 国家自然科学基金资助项目(41172088);; 中国地质调查局地质调查工作项目资助(基2011-03-04-06)
【CateGory Index】: P542;P597.3
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