| 漠河逆冲推覆构造活动时代的ESR年龄证据 |
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| 引用本文： | 刘晓佳,赵立国,田珺,杨晓平,张文龙,高雪咪.漠河逆冲推覆构造活动时代的ESR年龄证据[J].地质力学学报,2014,20(3):299-303. |
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| 作者姓名： | 刘晓佳 赵立国 田珺 杨晓平 张文龙 高雪咪 |
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| 作者单位： | 1.中国地质科学院地质力学研究所, 北京 100081 |
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| 基金项目： | 中国地质调查局天然气水合物资源勘查与试采专项“东北冻土区天然气水合物资源勘查” |
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| 摘 要： | 对出露于漠河逆冲推覆构造根带、中带及峰带等不同构造部位的10个同构造石英脉进行了电子自旋共振(ESR)测年, 结果显示漠河逆冲推覆构造形成于距今118~149 Ma之间, 由此确定漠河逆冲推覆构造主-活动时期为晚侏罗世晚期-早白垩世晚期。漠河逆冲推覆构造与侏罗纪至白垩纪初杭盖-肯特洋的收缩关闭及古太平洋俯冲导致的地块逆冲及地壳加厚与挤出有关, 并造成漠河盆地挤压回返和抬升萎缩。
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| 关 键 词： | 漠河盆地 逆冲推覆构造 ESR年龄 |
| 收稿时间： | 2014/5/10 0:00:00 |
ESR AGES EVIDENCES OF MOHE OVERTHRUST STRUCTURE STAGE |
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| LIU Xiao-ji,ZHAO Li-guo,TIAN Jun,YANG Xiao-ping,ZHANG Wen-long and GAO Xue-mi.ESR AGES EVIDENCES OF MOHE OVERTHRUST STRUCTURE STAGE[J].Journal of Geomechanics,2014,20(3):299-303. |
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| Authors: | LIU Xiao-ji ZHAO Li-guo TIAN Jun YANG Xiao-ping ZHANG Wen-long and GAO Xue-mi |
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| Institution: | 1.Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China2.Qiqihar Branch, Research Institute of Regional Geological Survey of Heilongjiang, Harbin 150036, China3.Chinese Academy of Geological Sciences, Beijing 100037, China |
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| Abstract: | The 10 different structure quartz veins and calcite veins from Mohe basin overthrust structure root zone, the central belt and front belt has been dated by electron spin resonance （ESR）. ESRS dating results show Mohe basin overthrust structure formed in （149.3 ±14.0） Ma -（ 118.7 ± 11.0） Ma, which indicate the main deformation of Mohe overthrust structure was in the Late Jurassic-Early Cretaceous. The structure has great relationship with Jurassic to Early Cretaceous Hang Gai-Kent Ocean closed, ancient land thrusting and crustal thickening caused by ancient Pacific Ocean subduetion. Then it led Mohe Basin atrophy of squeezing and lifting. |
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| Keywords: | Mohe Basin overthrust structrue ESR dating |
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