电气石/H_2O_2体系降解Cu(Ⅱ)-EDTA废水的研究     

姚志通  张路  夏枚生  叶瑛  张维睿 《矿物学报》2009,29(4)

Cu(Ⅱ)-EDTA废水由于其螯合性难以处理.采用电气石/H_2O_2体系进行降解,结果显示废水处理达到较好的效果.COD和Cu~(2+)的去除率与电气石投加量、H_2O_2用量和温度呈正相关性.溶液pH=3时,两者去除率最大.紫外-可见吸收光谱显示,处理后的Cu(Ⅱ)-EDTA被降解为小分子有机物.通过对比电气石反应前后的XRD图谱和红外光谱发现,电气石与EDTA降解中间产物发生络合.反应动力学研究结果表明,电气石/H_2O_2体系降解废水的反应为拟一级反应.  相似文献   

Touhuanping Fault, an active wrench fault within fold-and-thrust belt in northwestern Taiwan, documented by spatial analysis of fluvial terraces     

Yoko Ota  Yu-Nung Nina Lin  Yue-Gau Chen  Nobuhisa Matsuta  Takuya Watanuki  Ya-Wen Chen 《Tectonophysics》2009,474(3-4):559-570

This study aims at the recent activity and development of an active wrench fault, the Touhuanping Fault in northwestern Taiwan. Northwestern Taiwan has been proposed in a current situation between the mature to waning collision in terms of tectonic evolution. The main drainage in this area, the Chungkang River, flows close to the trace of the fault mentioned above. We examined various types of deformation of fluvial terraces along the Chungkang River as a key to understanding the nature and rate of the late Quaternary tectonics. The E–W trending Touhuanping Fault has long been mapped as a geological boundary fault, but its recent activity was suspected. Field survey revealed that its late Quaternary activity is recorded in the offset fluvial terraces. Our result shows dextral slip and vertical offset with upthrown side on the south, and activated at least twice since the emergence of terrace 4 (older terrace 3 with OSL date of ca. 80 ka). Total amount of offset recorded in the Touhuanping terrace sequence is 15 m for dextral and 10 m for vertical offset. Estimated recurrence time of earthquake rupture may be a few tens of thousand years. Uplift on the upthrown side of the Touhuanping Fault also resulted in the formation of drowned valleys which were graded to terrace 4. Other deformation features, such as back-tilting, westward warping, and a range-facing straight scarp, were also identified. A second-order anticline roughly parallel to the Touhuanping Fault is suggested to be the origin of the northward tilting on terrace 3; it could have resulted from a flower structure on the Touhuanping Fault at shallow depth. This may demonstrate that the buried segment of the Touhuanping Fault has also been active since 80 ka. In the northern study area, the westward warping at terrace 2 probably represents late Quaternary activity of another NE–SW trending Hsincheng Fault.  相似文献   

Devonian-Cretaceous repeated subsidence and uplift along the Teisseyre-Tornquist zone in SE Poland — Insight from seismic data interpretation     

Piotr Krzywiec 《Tectonophysics》2009,475(1):142-159

The Teisseyre-Tornquist Zone that separates the East European Craton from the Palaeozoic Platform forms one of the most fundamental lithospheric boundaries in Europe. Devonian to Cretaceous-Paleogene evolution of the SE segment of this zone was analyzed using high-quality seismic reflection data that provided detailed information regarding entire Palaeozoic and Mesozoic sedimentary cover, with particular focus on problems of Late Carboniferous and Late Cretaceous-Paleogene basin inversion and uplift. Two previously proposed models of development and inversion of the Devonian-Carboniferous Lublin Basin seem to only partly explain configuration of this sedimentary basin. A new model includes Late Devonian-Early Carboniferous reverse faulting within the cratonic area NE from the Kock fault zone, possibly first far-field effect of the Variscan orogeny. This was followed by Late Carboniferous inversion of the Lublin Basin. Inversion tectonics was associated with strike-slip movements along the Ursynów-Kazimierz fault zone, and thrusting along the Kock fault zone possibly triggered by deeper strike-slip movements. Late Carboniferous inversion-related deformations along the NE boundary of the Lublin Basin were associated with some degree of ductile (quasi-diapiric) deformation facilitated by thick series of Silurian shales. During Mesozoic extension and development of the Mid-Polish Trough major fault zones within the Lublin Basin remained mostly inactive, and subsidence centre moved to the SW, towards the Nowe Miasto-Zawichost fault zone and further to the SW into the present-day Holy Cross Mts. area. Late Cretaceous-Paleogene inversion of the Mid-Polish Trough and formation of the Mid-Polish Swell was associated with reactivation of inherited deeper fault zones, and included also some strike-slip faulting. The study area provides well-documented example of the foreland plate within which repeated basin inversion related to compressive/transpressive deformations was triggered by active orogenic processes at the plate margin (i.e. Variscan or Carpathian orogeny) and involved important strike-slip reactivation of crustal scale inherited fault zones belonging to the Teisseyre-Tornquist Zone.  相似文献   

Microtremor survey in Talchir, India to ascertain its basin characteristics in terms of predominant frequency by Nakamura's ratio technique   总被引：2，自引：0，他引：2  

M. Yanger Walling  William K. Mohanty  Sankar K. Nath  Supriyo Mitra  Ajesh John   《Engineering Geology》2009,106(3-4):123-132

The Talchir Basin, one of India's oldest basins, has been a subject of interest because of its rich coal deposits. The maximum thickness of the basin is about 1500 m. Beyond the basin is the hard metamorphic rocks of Precambrian age. The ambient noise survey data have been analyzed for the Talchir Basin using Nakamura's technique of horizontal–vertical-spectral-ratio (HVSR) to ascertain the basin structure in terms of the predominant frequency. The predominant frequency varies from 0.25 Hz to 7.8 Hz but a major portion of the basin comes under the range of 0.3 Hz–2.4 Hz while on the metamorphic rocks it is as high as 7.8 Hz. The variation in predominant frequency shows a good correlation with the sediment thickness of the basin. The results have been compared with the previous studies by other researchers and it shows consistency with the northerly dip of the basin. The present study has also been compared with the results of the synthetic seismogram that was performed for the Talchir Basin. The predominant frequency obtained from HVSR technique complements well with the frequency at which the peak response spectra ratio is observed. The present study of the predominant frequency identifies quite well the characteristics of Talchir Basin and is in good agreement with the synthetic ground motion modeling of the region.  相似文献   

对2001年昆仑山口西8.1级地震前断层带红外增温异常的讨论   总被引：6，自引：1，他引：5       下载免费PDF全文

郭卫英  单新建  马瑾 《地震地质》2004,26(3):548-556

利用NOAA卫星热红外遥感图像对东昆仑断裂带进行解译分析 ,并结合红外亮温的数值化处理 ,对比研究了地震活动比较平静的 1 999年和 2 0 0 1年昆仑山 8 1级地震前后的资料。结果表明 ,季节性的气象因素对断裂带的影响很大。在初冬季节 ,断裂带内的红外亮温值等于甚至高于周围环境温度。同时对比分析东昆仑断裂与阿尔金断裂的亮度温度也发现 ,在秋冬季的季节过渡期 ,气象因素对不同地物热惯量的影响很大。因此认为 ,前人提出的 2 0 0 1年 1 1月 1 4日发生在东昆仑断裂带上的 8 1级地震的震前红外辐射的增温异常 ,其中包含了随季节变化的自然现象 ,与地震有关的异常信息还有待于进一步探讨  相似文献   

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   总被引：2，自引：0，他引：2       下载免费PDF全文

宋方敏  李传友  陈献程  张兰凤 《地震地质》2004,26(4):611-621

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  相似文献   

山东半岛东北部新发现近EW向活断层   总被引：4，自引：0，他引：4       下载免费PDF全文

马保起  舒赛兵  刘光勋 《地震地质》2004,26(4):638-644

山东半岛东北部地区晚第四纪的构造活动以整体性抬升为主,内部的断裂活动相对较弱,晚更新世以来的断裂活动仅分布在局部地区,新发现的东殿后断裂是其中的1条。断裂总体走向近EW,全长约20km,地貌上表现为由3条河流上游组成的谷地。断裂错断的最新地层的热释光年龄为84～75kaBP,上覆坡积角砾层的热释光年龄为64kaBP,断裂发育的松软断层泥的热释光年龄为82kaBP。断裂的剖面特征和断盖地层的年龄表明,东殿后断裂的最新活动时代是晚更新世早中期,垂直活动速率不<016mm/a,晚更新世晚期以来停止活动;断裂的最大潜在地震为6级  相似文献   

阿尔金断裂带东段晚更新世阶地沉积物红外释光测年及其构造意义   总被引：3，自引：0，他引：3       下载免费PDF全文

王萍  卢演俦  陈杰 《地震地质》2004,26(4):716-726

对流经阿尔金断裂带东段的段家沙河、疏勒河和踏实河的阶地沉积物进行了细颗粒多测片红外释光(IRSL)测年,初步确定了晚第四纪各级阶地的形成年代和构造抬升速率。疏勒河在昌马盆地南缘发育7级阶地,光释光测年结果显示这些总高度超过100m的阶地可能主要形成于数万年以内,抬升速率约为2.5mm/a;照壁山峡谷疏勒河保留有5级阶地,大致形成于20万年前,阶地的抬升速率约为0.7mm/a;段家沙河在红柳峡上形成4级阶地,形成于距今7万年以来,其抬升速率约为06mm/a  相似文献   

海西至印支期郯庐断裂带的性质--据中国东部石炭纪至三叠纪的岩相古地理特征分析   总被引：4，自引：1，他引：3       下载免费PDF全文

候明金  Jacques MERCIER  Pierre Vergely  齐敦伦  王永敏 《古地理学报》2004,6(4):459-468

文中通过对晚石炭世至早三叠世华南和华北地块古地理特征以及地层学证据的分析,认为中国东部的郯庐断裂带自海西期以来经历了两个主要发展阶段：第一阶段是广义的郯庐断裂带发展阶段,在海西期它是扬子地块北东缘呈宽缓弧形展布的边缘裂陷槽(或盆地)的边界;在印支期由于扬子地块与华北地块的碰撞,成为两地块的对接边界,具有逆冲推覆的性质,属广义的特提斯构造域。第二发展阶段从燕山期以来,发展成为一条平移断裂带,属于狭义的环太平洋构造域的平移系统。自晚石炭世至早三叠世的中国南方及华北东南部的岩相古地理资料显示了扬子地块与华北地块的对接始于晚二叠世早期,地块的抬升自南向北、自南东向北西方向呈迁移趋势;印支期的郯庐断裂带是一条北东、北北东展布的缓‘S’形的地块拼贴边界,在现今的郯庐断裂带上表现为残留的由北北西向南南东的斜向逆冲推覆的性质,表现为大别苏鲁造山带的中上部构造层的变形,即张八岭构造带及前陆褶皱冲断带的变形;燕山期以来则为众所周知的狭义的郯庐断裂带即郯庐平移断裂系统的一部分。  相似文献   

Initiation Timing of the Jiamusi–Yitong Fault Zone in NE China     

WEN Quanbo  LIU Yongjiang  LIANG Chenyue  Li Weimin  SHAO Yilun  ZHANG Qian  ZHANG Duo  LIU Xinyue 《《地质学报》英文版》2019,93(5):1580-1590

The NE–striking Jiamusi–Yitong fault zone(JYFZ) is the most important branch in the northern segment of the Tancheng–Lujiang fault zone. The precise shearing time of its large–scale sinistral strike–slip has yet to determined and must be constrained. Detailed field investigations and comprehensive analyses show that strike–slip faults or ductile shear belts exist as origination structures along the western region of Yitong Graben. The strike of the shear belts trend to the NE–SW with steep mylonitic foliation. The zircon U–Pb dating result for the granite was 264.1±1 Ma in the ductile shear belt of the JYFZ. The microstructural observation(rotated feldspar porphyroclasts, S–C fabrics, and quartz c–axis fabrics, etc.) demonstrated the sinistral shearing of the ductile shear zones. Moreover, the recrystallized quartz types show a transitional stage of the subgrain rotation toward the recrystallization of the grain boundary migration(SR–GBM). Therefore, we suggest that the metamorphic grade of the shear zone in the ductile shear zones should have reached high greenschist facies conditions, and the deformation temperatures should approximately 450–500°C, which is obviously higher than the blocking temperature of muscovite(300–400°C). Hence, the ~(40)Ar/~(39)Ar isochron age of muscovite from ductile shear zones should be a cooling age(162.7±1 Ma). We infer that the sinistral strike–slipping event at the JYFZ occurred in the late Jurassic period, and it was further inferred from the ages of the main geological events in this region that the second sinistral strike–slip age of the Tancheng–Lujiang fault zone occurred during the period of tectonic movements in the Circum–Pacific tectonic domain. This discovery also indicates the age of the Tancheng–Lujiang fault zone that stretches to northeastern China. The initiation of the JYFZ in the late Jurassic is related to the speed and direction of oblique subduction of the west Pacific Plate under the Eurasian continent and is responsible for collision during the Jurassic period.  相似文献