准噶尔盆地南缘霍尔果斯-玛纳斯-吐谷鲁断裂晚新生代构造变形的ESR测年证据  

Electron Spin Resonance Dating of the Late Cenozoic Deformation of the Huoerguosi-Manas-Tugulu Reverse Faults along Southern Edge of Junggar Basin

作　　者：胡玲[1] 何登发[2] 胡道功[3] 

机构地区：[1]中国地质大学,北京100083 [2]中国石油勘探开发研究院,北京100083 [3]中国地质科学院地质力学研究所,北京100081

出　　处：《地球学报》2005年第2期121-126,共6页Acta Geoscientica Sinica

基　　金：中国石油勘探开发研究院项目"准噶尔盆地南缘断裂构造特征与演化研究"资助

摘　　要：本文对准噶尔盆地南缘霍尔果斯 玛纳斯 吐谷鲁逆断裂带中石膏、石英脉和断层泥进行了ESR测年研究。结果表明,霍尔果斯 玛纳斯 吐谷鲁逆断裂带主要经历了3个发展阶段,逆断裂带形成于15 0 0ka前,在4 0 0～10 0 0ka和80～12 0ka期间进行了再调整。断裂活动时间与青藏高原阶段性隆升时间一致,说明准噶尔盆地南缘霍尔果斯玛纳斯 吐谷鲁逆断裂带的形成与青藏高原的隆升过程密切相关,晚新生代天山山脉的隆升和前陆盆地的构造变形应为印度和欧亚两大板块碰撞的远程效应。This paper focuses on the late Cenozoic deformation of the Huoerguosi-Manas-Tugulu reverse fault zone in the southern edge of Zhungaer basin. Twelve gypsum, fault gouge and quartz vein samples with different stuuctural significances were collected and dated by using the Electronic Spin Resonance (ESR) method. The results show that the Huoerguosi-Manas-Tugulu reverse faults has subjected to three major phases of deformation. The onset of reverse faults formation is at about 1500 ka ago and the reverse faults readjusted at 400～1000 ka and 80～120 ka, respectively. These data, along with evidence foruplift phases in Tibetean platean, support the model that relate reverse faulting to uplift processes occurring within the Tibetan plateau and that the late Cenozoic uplif-ting of Tianshan Mountain and tectonic deformation of foreland basins are the results of the collision between India and Eurasia plates.

关 键 词：准噶尔盆地南缘 ESR测年 构造变形 晚新生代 玛纳斯 逆断裂带 证据 青藏高原 活动时间 隆升过程 板块碰撞 前陆盆地 断层泥 石英脉 阶段性 天山 

分 类 号：P534.63[天文地球—第四纪地质学] TE122.3[天文地球—古生物学与地层学]