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地质科学  2008, Vol. Issue (2): 359-369    DOI:
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赣中宁都北部地区新构造活动初探
张万良
核工业270研究所, 江西南昌县, 330200
A preliminary study on neotectonics in northern Ningdu area,central Jiangxi province
Zhang Wanliang
No.270 Research Institute of China National Nuclear-Industry Corp., Nanchang County, Jiangxi 330200
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摘要 江西省中部宁都北部地区断裂构造发育,ETM453合成图像线形影像主要有北东向、北北东向和北西向,少量近东西向,线性构造具明显的新构造运动踪迹,地质证据有断层的走滑、地震、温泉和水系被错断等。其中,斜贯研究区中部的桃山断裂构造为一向南东下滑的右行张扭性断层,具捩断层性质,其挽近时期明显的构造运动造成桃山构造上盘距构造面不远的地带,特别是桃山构造的北东端如打鼓寨岩体北东部及外围,侵蚀作用较弱,保矿条件较好,具有较大的找矿潜力。
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张万良
关键词新构造活动   桃山断裂   右行张扭   保矿作用   宁都北部     
Abstract: The linear fractures are developed extensively in northern Ningdu county,central Jiangxi province. Based on landset-7 ETM+RGB synthesis image,the author interpreted out four groups of linear fractures,namely, NE-,NNE-,NW-,and a few of EW-trending faults. All of them showed a distinct traces of neotectonism with evidence from strike-slippinp of faults,earthquakes,hot springs, etc. The NE-striking Taoshan fault,developed in the dike-structure belt in neotectonism period,was a dextral transtensile one with SE-dipping at 65°~70°,with the southeast block downsliding and tear faulting occurring,so that the upper plate of the fault,especially its northeast part,was relatively weaker eroded. There might be a good ore-protecting conditions and more prospecting potential in those regions for uranium ore exploring.
Key wordsNeotectonism   The Taoshang fault   Dextral transtension   Ore-protecting action   Northern Ningdu county   
收稿日期: 2007-09-07;
引用本文:   
张万良. 2008, 赣中宁都北部地区新构造活动初探. 地质科学, (2): 359-369.
Zhang Wanliang. A preliminary study on neotectonics in northern Ningdu area,central Jiangxi province[J]. Chinese Journal of Geology, 2008, (2): 359-369.
 
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[1] 许学汉, 裴静娴. 渡口-西昌区域第四系形成与新构造活动的热发光年龄及发展史研究[J]. 地质科学, 1987, (4): 374-383.
 
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