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| 遵义断裂带变形特点及其演化历史探讨 | |
| 引用本文： | 邓新,杨坤光,刘彦良.遵义断裂带变形特点及其演化历史探讨[J].贵州地质,2010,27(3):161-167. |
| 作者姓名： | 邓新 杨坤光 刘彦良 |
| 作者单位： | 1. 中国地质大学(武汉)地球科学学院,湖北,武汉,430074 2. 中国地质大学(武汉)地球科学学院,湖北,武汉,430074;中国地质大学(武汉)构造与油气资源教育部重点实验室,湖北,武汉,430074 3. 中国地质大学(武汉)地球科学学院,湖北,武汉,430074;中国地质大学(武汉)构造与油气资源教育部重点实验室,湖北,武汉,430074;内蒙古地质勘查有限责任公司,呼和浩特,010020 |
| 基金项目： | 国家自然科学基金，中石化股份有限公司勘探南方分公司项目"黔中隆起性质、演化及其对后期构造控制作用研究" |
| 摘 要： | 遵义断裂带是贵州省境内南北向最大的断层之一,对断裂带的宏观构造、微观构造及两侧沉积相研究表明,该断裂是形成于燕山期的盖层断裂,并非同沉积断裂。其活动演化与周缘构造单元之间存在明显的耦合性,控制着断裂两侧燕山期褶皱、断裂的展布形迹。结合流体包裹体测温和ESR定年的研究表明,断裂的变形以浅部的脆性为主,主要经历了三期活动：主燕山期（J3-K1）的主期变形,表现为强烈的高角度自东向西逆冲兼左行剪切,断裂基本定型;燕山晚期（K2-E）,表现为正断层兼右行平移,控制K2-E红盆沉积,石英脉ESR定年约束该期活动在59～65Ma;喜山期（古近纪至今）,表现为自西向东逆冲。断裂现今构造形迹为多期构造叠加的结果,它在整个活动历史中均表现为脆性,对黔中隆起后期构造格局起到明显的制约作用。 |
| 关 键 词： | 遵义断裂带 显微构造 流体包裹体测温 沉积分析 演化历史 |
Discussion about Deformation Characters and Its Evolution History of Zunyi Fracture Zone |
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| DENG Xin,YANG Kun-guang,LIU Yan-liang.Discussion about Deformation Characters and Its Evolution History of Zunyi Fracture Zone[J].Guizhou Geology,2010,27(3):161-167. | |
| Authors: | DENG Xin YANG Kun-guang LIU Yan-liang |
| Institution: | 1.Faculty of Earth Science,China University of Geosciences,Wuhan 430074,Hubei,China; 2.Key Laboratory of Tectonics and Petroleum Resources,MOE,China University of Geosciences, Wuhan 430074,Hubei,China;3.Neimenggu Geology Exploration Co.Ltd) |
| Abstract: | Zunyi fracture zone is one of the biggest south-north faults in Guizhou Province.The study of macroscopic structure,microscopic structure and the sedimentary facies of both sides shows that this fault formed in the caprock fault of Yanshanian period,not syndepositional fault.There is obvious coupling between the activity evolution and the peripheral structural unit,controls the spreading features of the Yanshanian fold and fault of both sides.Combine with study of fluid inclusion method and ESR dating,the deformation of the fault is mainly brittle of the shallow zone,experienced 3 active periods：the main Yanshan stage（J3-K1）, expressed strong east to west thrust of high angle and left - lateral shear,the style was formed;the later Yanshan stage（K2-E）,expressed normal fault and right - lateral strike slip,controlled the K2-E red basin deposit, the ESR dating showed the active time is 59-65Ma;Xishan stage（Paleogene Period-）,expressed west to east thrust,the structural feature of the fault is the result of times structure stack,it expressed brittle in the whole history and be obvious restrictive of structural pattern in the later Central Guizhou uplift. |
| Keywords: | Zunyi fracture zone microscopic structure fluid inclusion method sedimentary analyses evolution history |
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