马晓军,梁积伟,李建星,贾伟航,陶文星,刘亚兰,刘晓峰.鄂尔多斯盆地中西部中新生代构造抬升及演化[J].西北地质,2019,52(4):127-136 MA Xiaojun,LIANG Jiwei,LI Jianxing,JIA Weihang,TAO Wenxing,LIU Yalan,LIU Xiaofeng.Meso-cenozoic Tectonic Uplift and Evolution of Central and Western Ordos Basin[J].Northwestern Geology,2019,52(4):127-136
鄂尔多斯盆地中西部中新生代构造抬升及演化
Meso-cenozoic Tectonic Uplift and Evolution of Central and Western Ordos Basin
投稿时间:2018-12-25  修订日期:2019-05-15
DOI:
中文关键词:  裂变径迹分析;热史模拟;构造抬升;鄂尔多斯盆地;中-新生代
英文关键词:fission-track analysis;thermal evolution simulation;tectonic uplift;Ordos Basin;Meso-cenozoic
基金项目:中国地质调查局“区域地质调查”(0716-1641DK900365/07),“国际地科联、国际地层对比计划”(IGCP652),科技部、国家科技重大专项专题(2017ZX05005002-004),国家自然科学基金委、青年项目(4150210)资助
作者单位
马晓军 长安大学地球科学与资源学院, 陕西 西安 710054 
梁积伟 长安大学地球科学与资源学院, 陕西 西安 710054 
李建星 成都地质矿产研究所, 四川 成都 610082 
贾伟航 中国建筑材料工业地质勘查中心甘肃总队, 甘肃 天水 741000 
陶文星 长安大学地球科学与资源学院, 陕西 西安 710054 
刘亚兰 长安大学地球科学与资源学院, 陕西 西安 710054 
刘晓峰 长安大学地球科学与资源学院, 陕西 西安 710054 
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中文摘要:
      通过磷灰石裂变径迹(AFT)分析与热史模拟的方法,探讨了鄂尔多斯盆地中西部地区中新生代构造热演化过程及地质响应。不同构造单元及不同层位样品的AFT年龄结果表明,研究区中生代以来经历2次构造抬升:晚白垩世末—古新世早期(79~65 Ma)和始新世—中新世早期(56~15 Ma);AFT年龄空间对比图表明,研究区抬升冷却具有南早北晚、后期整体抬升的特征。热史模拟结果表明,研究区整体于晚白垩世末期快速冷却抬升,古新世—中新世晚期为缓慢抬升,中新世末以来抬升速率明显加快。研究区中新生代的构造演化过程与周缘构造单元的相互作用密不可分,晚白垩世以来的构造抬升可能与秦岭造山带构造演化有关,新生代以来的构造抬升与盆地周缘裂陷的演化具有一致性,中新世晚期以来的快速抬升可能与青藏高原隆升的远程效应有关。
英文摘要:
      Through using the fission-track analysis and thermal evolution simulation, this paper discusses the Meso-cenozoic tectonic-dynamic thermal evolution of Central and Western Ordos Basin and its geological response. The AFT age of different tectonic units and the related strata in the studying area reveal that there may be two times uplift process occurred in the end of Late Cretaceous to Early Paleocene (79~65Ma) and Eocene to Early Miocene (56~15Ma). The spatial distribution of AFT ages suggests that the uplift and cooling time in south is early than in north, and the overall uplift was occurred in later period. The thermal evolution simulation indicates that this studying area had wholly experienced rapid uplift in Late Cretaceous, and the low uplift was happened in Paleocene to Late Miocene, while the further rapid uplift was occurred after Late Miocene. The tectonic uplift of Late Cretaceous in this studying area may be related to the evolution of Qinling tectonic units. The tectonic uplift of Cenozoic is consistent with the evolution of rifting around this basin. The rapid uplift since late Miocene may be related to the remote effect of the Tibetan Plateau uplift.
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