玉树断裂活动性研究

通过实地考察和室内工作，对玉树断裂的活动性进行了分段研究。该断裂划分为３段：（１）西北段全新世以来活动强烈，以水平左旋活动为主，水平滑动速率达７．３ｍｍ／ａ，沿断裂带展布大量的古地震事件遗迹；（２）中段第四纪以来的主体活动时段在晚更新世以前，以正断层活动为主；（３）东南段全新世以来活动强烈，以水平左旋活动为主，水平滑动速率约５ｍｍ／ａ，沿断裂带分布有大量的古地震事件遗迹，历史上记载的最大地震为１８９６年的邓柯７．０级地震     

辽宁普兰店—瓦房店地区主要断裂活动性研究

本文根据野外地质调查资料和２９个年代测定数据,讨论了普兰店－瓦房店地区１３条断裂的展布特征和活动性．指出：金州断裂、普兰店湾断裂和曲家屯断裂属于晚更新世活动断裂,其余１０条断裂为早、中更新世活动断裂或前第四纪断裂     

西江断裂鹤山—江门段的构造活动性

西江断裂鹤山－江门段由了哥山断裂,天台山断裂,鹅公山断裂,岐祥里断裂和横坑里断裂等５条断裂组成,并以斜列形式分布在西江左右岸。断裂明显控制或影响西江水道的发育,在中更新世晚期至晚更新世中晚期曾发生多次活动。与西江断裂的其它断裂段比较,该断裂的活动性地较弱。     

跨断层水准测量与朝阳—北票断裂现今活动性

本文利用桃花吐及北票场地１９９０年－１９９６年跨断层短水准测量资料，并结合同期的重力测量资料，研讨了朝阳－北票断现今活动性，得出了几条有益的结论。     

云南地区主要断裂现今活动性研究

运用1982年至2009年云南地区跨断层短水准和短基线观测资料,计算得到了主要断裂的现今活动速率,研究云南地区断裂的现今活动特征,并进一步探讨云南地区断裂活动与地震活动的关系。     

高要断裂的特征及其活动性

高要断裂是一条呈北东向延伸的由多条断裂组成的大断裂,具有多期活动特征,根据不同的活动特征又可将该断裂分为３段。经野外地震地质调查,并在断层面和钻孔的角砾岩岩芯中共取了５个样品作热释光测年,测定断层活动年龄距今均大于１４万ａ,证明断层最后一期活动为中更新世断层年代,可视为非活动断层。     

四会—吴川断裂南段近期活动性研究

根据研究区的构造地貌特征，断裂两盘第四系和等时地貌面的对比以及其它宏观和微观的断裂构造迹象，讨论了四会－吴川断裂南段晚更新世以来的活动性，得出该时段，该断裂在该地区相对稳定的基本认识。     

唐山断裂现代活动性研究

利用1984～2008年唐山台跨断层基线和水准数据,分时段研究断层的运动特征,计算出唐山断裂水平形变、垂直形变特征及断层活动速率。求解断层及周边地区的的应变特征和主应变方向,研究唐山断裂的活动特征。探讨唐山断裂活动与地震活动的关系。     

南海北缘北东东向构造活动性研究

从地形地貌特征，重磁地球物理场，深部构造与断裂构造以及地震活动，震源机制等多方面论述北东向构造是南海北缘的主要活动构造，对于长期以来认为新华夏系北东向构造是该区主要活动构造观点来说，这是一种新的学术思想。     

抚顺城区段浑河断裂现今活动性研究的述评

对以往关于抚顺城区段浑河断裂现今构造活动性的主要文献所采用的地壳形变测量资料及其结论的科学性作了述评，认为得出的抚顺城区段浑河断裂现今构造活动明显或不明显的结论尚缺乏充分的依据，提出了进一步研究该断裂现今构造活动性的建议与方法。     

FAULT ROCKS AND ACTIVITIES OF THE KANGDING-MOXI FAULT ZONE

Mylonite,cataclasite and especially fault rocks subjected to both mylonitization and cata-clasis widely developed along the Kangding-Moxi fault zone.A mylonite zone has formed as a result of ductile shearing in early stage.In later stage brittle fracturing has occurred along this mylonite zone,accompanied by the formation of the present Kangding-Moxi fault zone.Later on,ductile shearing and multiperiods of brittle fracturing occurred along the fault zone.Differential stress magnitude d     

夏垫断裂带深部构造特征与第四纪活动性讨论

利用重力、浅层地震和高密度电阻率法物探工作成果,由深及浅垂向上“接力拼接”的方式,结合钻探等手段,把夏垫断裂带分解为基岩断裂带和第四纪断裂带2个部分进行研究,结果表明:1)夏垫断裂带的基岩断裂带由主干断裂和次级断裂构成.其北段(马坊-西集一带)较窄,由2条主干断裂构成.其南段(西集-凤河营一带)较宽,由3条主干断裂构成.2)第四纪断裂带是基岩断裂带向上延伸的部分,是断裂带最新活动的直观表现,并受控于基岩断裂带.夏垫第四纪断裂带同样由主干和次级断裂构成,北段(马坊-西集一带)由2条主干断裂和分布于北端尾部次级断裂构成,与基岩断裂带一一对应关系较好.2条主干断裂产状差异较大,最新活动时间均为全新世.而南段(西集-凤河营一带)断裂分布不连续,很难分清主次断裂,同基岩断裂带的对应关系较差,推测为基岩断裂中夏垫断裂的活动.这些主、次级断裂产状均较为陡立,最新活动时间为晚更新世晚期-全新世早期.3)夏垫断裂带内上、下两盘全新世沉积底界垂向累积位错量为1.7 ～4.8m,晚、中、早更新世以来则分别为6 ～ 26m、26 ～ 167m和44 ～ 330m,其中最大累积位错量位于夏垫地区,向南、北逐渐减小.4)以张家湾断裂为界把夏垫断裂带划分为南、北2段.北段第四纪活动性强,中强震及微小地震时有发生,而南段第四纪活动性弱,仅发生微小地震.     

重大工程场址断层活动的研究

研究重大工程场址断层活动（特别是断层的最后一次活动）对于工程的设计和建设十分必要．许多工程选址在基岩裸露区，缺乏能标明断层活动特征的新地层。为了在这些地区顺利地开展工作，笔者探索了一条新的途径，即利用变形岩石显微构造分析方法和多种测试技术对断层带物质进行综合分析测试，提取留存其中的有关断层活动规律的信息．本文论证了该方法的理论依据和可行性，并着重总结了应用该法在几个重大水电工程场址内进行断裂活动研究的成果．这些成果为工程设计人员提供了可靠的工程地质依据，也证明了该研究途径的有效性和实用性．     

ANALYSIS OF THE LATE QUATERNARY ACTIVITY ALONG THE WENCHUAN-MAOXIAN FAULT -MIDDLE OF THE BACK-RANGE FAULT AT THE LONGMENSHAN FAULT ZONE

The Longmenshan fault zone is located in eastern margin of Tibetan plateau and bounded on the east by Sichuan Basin, and tectonically the location is very important. It has a deep impact on the topography, geomorphology, geological structure and seismicity of southwestern China. It is primarily composed of multiple parallel thrust faults, namely, from northwest to southeast, the back-range, the central, the front-range and the piedmont hidden faults, respectively. The M_S8.0 Wenchuan earthquake of 12^th May 2008 ruptured the central and the front-range faults. But the earthquake didn't rupture the back-range fault. This shows that these two faults are both active in Holocene. But until now, we don't know exactly the activity of the back-range fault. The back-range fault consists of the Pingwu-Qingchuan Fault, the Wenchuan-Maoxian Fault and the Gengda-Longdong Fault. Through satellite image(Google Earth)interpretation, combining with field investigation, we preliminarily found out that five steps of alluvial platforms or terraces have been developed in Minjiang region along the Wenchuan-Maoxian Fault. T₁ and T₂ terraces are more continuous than T₃, T₄ and T₅ terraces. Combining with the previous work, we discuss the formation ages of the terraces and conclude, analyze and summarize the existing researches about the terraces of Minjiang River. We constrain the ages of T₁, T₂, T₃, T₄ and T₅ surfaces to 3~10ka BP,~20ka BP, 40~50ka BP, 60ka BP and 80ka BP, respectively. Combining with geomorphologic structural interpretation, measurements of the cross sections of the terraces by differential GPS and detailed site visits including terraces, gullies and other geologic landforms along the fault, we have reason to consider that the Wenchuan-Maoxian Fault was active between the formation age of T₃ and T₂ terrace, but inactive since T₂ terrace formed. Its latest active period should be the middle and late time of late Pleistocene, and there is no activity since the Holocene. Combining with the knowledge that the central and the front-range faults are both Quaternary active faults, the activity of Longmenshan fault zone should have shifted to the central and the front-range faults which are closer to the basin, this indicates that the Longmenshan thrust belt fits the "Piggyback Type" to some extent.     

郯庐活断层的分段及其大震危险性分析

郯庐活断层长３６０ｋｍ，通过系统的填图可将其分为３个独立的活断层破裂段。对每段的几何形态、最新活动时代、大震复发间隔、现今活动状态以及分段障碍体等作了介绍，并对各段未来的大震危险性做了初步分析     

毛毛山断裂带位移累积滑动亏损特征及其分段意义讨论

在对毛毛山断裂带断错微地貌划分对比的基础上详细分析了其位移分布特征。结果表明，毛毛山断裂的水平位移和垂直位移均具较明显的分组现象和可公度性特点。在空间分布上具明显的互补性，从东到西水平位移具累积滑动亏损特征，垂直位移则具累积滑动补偿性，这反映了沿断裂带活动性质与活动强度的差异性和非均匀性。位移累积滑动亏损直接反映了断裂在一定时段内的特征滑动行为，是进行分段的重要依据     

郯庐断裂带北段的形成时间及其动力学特征(英文)

郯庐断裂带在中国东北地区延伸，切过辽河盆地东部坳陷后分为依兰－伊通、密山－敦化和四平－长春三条断裂。在依兰－伊通断裂带内利用４０Ａｒ／３９Ａｒ法测得断层岩（云母石英片岩）中黑云母单矿物的年龄为（１００±２．３）Ｍａ。同时测得断裂带内辉绿岩的Ｒｂ－Ｓｒ全岩等时线年龄（１００±５．９）Ｍａ，辉石的４０Ａｒ／３９Ａｒ坪年龄为１０５Ｍａ。从依兰－伊通断裂错开中生代花岗岩体、古生界地层、白垩系泉头组的露头对比，以及断裂带内应变测量等获得区内断层的走滑距离为４ｋｍ左右。断层切过下白垩统泉头组（１２２Ｍａ，Ｋ－Ａｒ法）并被上白垩统嫩江组所覆盖。这段走滑断层的活动对邻近盆地产生了影响，造成盆地中的反转构造。该走滑断层是在中国东部地区逆时针方向的旋转运动基础上形成的，并与俯冲的西太平洋板块及其引起的上地幔物质运动有关     

新疆阜康-吉木萨尔断裂带的几何特征与活动性研究

根据详实的野外资料对新疆阜康 -吉木萨尔断裂带的构造几何特征和活动性进行了分析与研究 ,结果表明 :断裂带由东、西两大段组成 ,西段由 4条次级S倾逆断裂左行斜列组成 ,东段由 3条次级S倾逆断裂右行斜列组成 ,总体上呈向北微凸的近EW向展布 ,长达 14 0km ,控制着东天山北缘的第四纪构造演化和地貌发育 ;组成断裂往往是低角度的逆断层 ,与褶皱共生 ,切割深度 5～ 6km ,第四纪晚期多期 (次 )活动 ,以间歇性稳定滑动为特征 ;断裂带端部段落倾角较大 ,活动量较小 ,全新世平均垂直滑动速率为 0 .10～ 0 4 0mm/a ,中部段落以低倾角的推覆为特征 ,活动强烈 ,全新世平均垂直滑动速率达 0 80～ 1 0 0mm/a以上     

PALEOEARTHQUAKES ALONG PUXIONG FAULT OF DALIANGSHAN FAULT ZONE DURING LATE QUATERNARY

Daliangshan fault zone (DFZ) constitutes an indispensable part of Xianshuihe-Xiaojiang fault system which is one of the main large continental strong earthquake faults in China.Puxiong Fault,the east branch of middle segment of DFZ,is the longest secondary fault.Its paleoseismic activity plays an important role in evaluating regional seismic activity level and building countermeasures of preventing and reducing the earthquake damage.The active fault mapping as well as the study of paleoseismological trench in recent years illustrates that Puxiong Fault is a slightly west-dipping high-angle left-lateral strike-slip fault with strong activity since late Pleistocene.Two trenches excavated across this fault reveal 2 and 3 paleoearthquakes that ruptured the fault at 8206 BC-1172 AD,1084-1549 AD,and 17434-7557 BC,1577-959 BC and 927-1360 AD,respectively.The OxCal model combining the results from both trenches and the another one in previous study across the fault with the historical earthquake record yields the elapsed time of~0.7ka of the latest paleoearthquake event,and the interval time is~2.3ka between the last two events.In the model,the penultimate event is considered to be recorded in all trenches.As all the three trenches are located at north part of the Puxiong Fault whose strike is apparently different from the south part,the~57km long north secondary segment is supposed to be the seismogenic structure of the paleoearthquake.According to the empirical scaling laws between magnitude and rupture length,the magnitude of the surface ruptured paleoearthquake is estimated to be more than M7 with the coseismic displacement~3.5m.However,the difference between the time of the paleoearthquake events on the middle and south segments of DFZ illustrates their independence as earthquake fracture units,and furthermore,the lower connectivity and the new generation of DFZ.     

右江断裂带晚更新世活动的若干地质地貌证据及位移速率

右江断裂带地处桂西断块区,有记载以来沿带曾发生40～50级地震15次,属中强地震带。笔者在室内卫片、航片、大比例尺地形图解译和分析的基础上,经野外实地调查,获得了断裂带晚更新世活动的若干地质地貌证据,实测了断裂的左旋位移数据。文中介绍了有关证据,并根据年龄数据,计算了断裂中、晚更新世以来的水平和垂直位移速率。断裂带在平面上分3大段,即百色以西段、百色—思林段、思林—坛洛段,各大段又可进一步分为若干个小段。断裂断错了距今(328±025)×104a～(1016±079)×104a的阶地堆积物和残坡积物,控制着百色—田东晚第四纪盆地的发育,地貌上形成断层谷和槽地、断层崖和陡坎,横穿断裂的水系发生同步左旋位移,其活动性质以左旋走滑为主,兼有张性差异运动。晚更新世不同时段以来断裂的水平位移速率为147～198mm/a,中更新世以来的垂直位移速率为074～076mm/a,晚更新世以来为01～035mm/a。该断裂的位移速率明显低于其西的川滇断块内部断裂,更低于川滇断块周边断裂