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地震地质 1990年第3期 200-206页

作者： Jiang Zhao, Sun Jie, Xu Chang-fang Wang Ji-jun and Shi Shu-lin (institute of geology, state seismological bureau, beijing 100029.

The features of deep conductivity structure along Xiangshui-Mandal Geoscience Transect are described in this paper basing on newly obtained magnetotelluric data. Large resistivity contrasts can be found on both borders of North china platform. The depth of the crustal high conductivity layer changes abruptly from 21 km to 34 km beneath Nei Mongol fold system on the northwestern end of the transect. While it is absent beneath Subei-Jiaonan terrane on the southeastern end of the transect, where two high conductivity layers are detected in the upper mantle. The crustal high conductivity layer is well developed in the Cenozoic basins within North china Platform with a relatively shallow depth. The depth of the upper mantle high conductivity layer along the transect ranges from 6. to 127 kin, with a general tendancy of decreasing in depth from northwest to southeast, forming local uplifts beneath Ho-Bao basin, Central Hebei depression and Tan-Lu fault zone. It reflects the characteristics of the regional geo

关键词： Geoscience Transect Magnetotelluric measurements High conductivity layer Conductivity structure Jiangsu Nei Mongol

Multi-layer Tectonic Model for Intraplate Deformation and Plastic-Flow Network in the Asian Continental Lithosphere

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Acta Geologica Sinica(English Edition) 1993年第3期67卷 247-271页

作者： Wang Shengzu institute of geology, state seismological bureau, beijing Liu Linqun

In a large area of the east—central Asian continent there is a unified seismic network system composed of two families of large—seismic belts that intersect conjugately. Such a seismic network in the middle—upper crust is actually a response to the plastic flow network in the lower lithosphere including the lower crust and lithospheric mantle. The existence of the unified plastic flow system confirms that the driving force for intraplate tectonic deformation results mainly from the compression of the India plate, while the long-range transmission of the force is carried out chiefly by means of plastic flow. The plastic flow network has a control over the intraplate tectonic deformation.

关键词： Continental lithosphere tectonic deformation multi-layer tectonic model large-scale seismic belt seismic network plastic flow network

Contemporary crustal movement of continental china obtained by global positioning system(GPS) measurements

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Chinese Science Bulletin 2001年第18期46卷 1552-1554,1588页

作者： MA Zongjin, CHEN Xinlian, YE Shuhua, LAI Xian, WEI Ziqing, CHEN Junrong, NING Jinsheng, XU Huoze & DING Guoyu1. Insitute of geology, china seismological bureau, beijing 100029. china (e-mail: disgroup@***)2. Center for Analysis and Prediction, china seismological bureau, beijing 100036. china 3. Shanghai Astronomic Observatory, Chinese Academy of Sciences, Shanghai 200030, china 4. institute of Seismology, china seismological bureau, Wuhan 430077, china 5. institute of Survey and Mapping, Xi’an 710054, china 6. National bureau of Survey and Mapping, beijing 100830, china 7. Wuhan University, Wuhan 430077, china 8. institute of Geodesy and Geophysics, Wuhan 430077, china 9. china seismological bureau, beijing 100036. china Insitute of geology China Seismological Bureau Beijing China Center for Analysis and Prediction China Seismological Bureau Beijing China Shanghai Astronomic Observatory Chinese Academy of Sciences Shanghai China institute of Seismology China Seismological Bureau Wuhan China institute of Survey and Mapping Xi’an China National bureau of Survey and Mapping Beijing China Wuhan University Wuhan China institute of Geodesy and Geophysics Wuhan China china seismological bureau Beijing China

We obtain a unified horizontal velocity field of continental china and vicinity through measurements at 81 GPS stations provided by the National Key Infrastructure Project, Crustal Movement Observation Network of china. The velocity field delineates patterns of movements and deformation of active crustal blocks in continental china under the Eurasia-fixed reference frame. The space-based geodesy also clearly shows for the first time the horizontal movementand deformation of continental china induced by indentation of the Indian plate. The data provide kinematic constraints for simulating dynamic process of continental litho-spheric deformation.

关键词： crustal movement velocity field tectonic deformation.

Mass Extinction——A Fundamental Indicator for Major Natural Divisions of Geological History

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Acta Geologica Sinica(English Edition) 1988年第1期1卷 1-12页

作者： Xu Daoyi Zhang Qinwen Sun Yiyin institute of geology, state seismological bureau, beijing institute of geology, Chinese Academy of Geological Sciences, beijing institute of geology, Academia Sinica, beijing institute of geology State Seismological Bureau Beijing China

In the Phanerozoic, there are three major geological boundaries: Precambrian/***/Triassic and Cretaceous/Tertiary. Studies of these boundaries in china and over the world stronglysuggest that they have the following similar features: mass extinctions of many taxa, positive anomalies ofplatinum-group metals, and abrupt changes of stable isotopes (δ13C). It is quite probable that these were theconsequences of some rare catastrophic events of extraterrestrial origin. Hence, the three above-mentionedmass extinction events may be regarded as key indicators for the division of the geological history of thePhanerozoic.

关键词： Mass Extinction A Fundamental Indicator for Major Natural Divisions of Geological History

SEISMIC HAZARD ASSESSMENT AND EARTHQUAKE DISASTER MITIGATION IN china

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Natural Disaster Reduction in china 1996年第1期 8-17页

作者： Zhang Peizhen(institute of geology,state seismological bureau,beijing {6.P.R.china)

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ＳＥＩＳＭＩＣＨＡＺＡＲＤＡＳＳＥＳＳＭＥＮＴＡＮＤＥＡＲＴＨＱＵＡＫＥＤＩＳＡＳＴＥＲＭＩＴＩＧＡＴＩＯＮＩＮＣＨＩＮＡＺｈａｎｇＰｅｉｚｈｅｎ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＳｔａｔｅＳｅｉｓｍｏｌｏｇｉｃａｌＢｕｒｅａｕ，Ｂｅｉｊｉｎｇ...

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Insights into correlation between satellite infrared information and fault activities

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Progress in Natural Science:Materials International 2006年第4期16卷 394-402页

作者： MA Jin, WANG Yipeng, CHEN Shunyun, LIU Peixun and LIU Liqiang state Key Laboratory of Earthquake Dynamics, institute of geology, china Earthquake Administration, beijing 100029. china [a]state key Laboratory of Earthquake Dynamics Institute of Geology China Earthquake Administration Bejing China

Tectonic activities are accompanied with material movement and energy transfer, which definitely change the state of thermal radiation on the ground. Thus it is possible to infer present-day tectonic activities based on variations of the thermal radiation state on the ground. The received satellite infrared information is, however, likely influenced by many kinds of factors. Therefore, the first problem that needs to be solved is to extract information on tectonic activities and eliminate effects of external (non-tectonic) factors. In this study, we firstly make a review of the current studies on this subject, and then present the technical approach and our research goal. Using the data of 20 years from the infrared band of the satellite of National Oceanic and Atmospheric Administration (NOAA) and the method we have developed, we investigate fault activities in western china. The results show that the areas with high residual values of land surface brightness temperature (LSBT), which is presumably related to faultings in space, accord usually with the locations of followed major earthquakes. The times of their value growing are also roughly consistent with the beginning of active periods of earthquakes. The low frequency component fields of the LSBT, acquired from wavelet analysis, exhibit well the spatial distributions of active faults. The "heat penetrability index" (HPI) related with enhancement of subsurface thermal information has been expressed well for the backgrounds of accelerated tectonic motions, and some correlations exist between HPI and the local faulting and seismicity. This study provides a new approach to study temporal-spatial evolution of recent activities of faults and their interactions.

关键词： infrared emission fault activity residual of land surface brightness temperature heat penetrability index.

Moment tensor analysis of the acoustic emission source in the rock damage process

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Progress in Natural Science:Materials International 2005年第7期15卷 609-613页

作者： YU Huaizhong, ZHU Qingyong, YIN Xiangchu and WANG Yucang ( state Key Laboratory of Earthquake Dynamics, institute of geology, china Earthquake Administration, beijing 100029. china state Key Laboratory of Nonlinear Mechanics, institute of Mechanics, Chinese Academy of Sciences, beijing 100080, china School of Mathematics and Computational Science, Zhongshan University, Guangzhou 510275, china Center for Analysis and Prediction, china seismological bureau, beijing 100036. china Quakes, Department of Earth Science, University of Queensland, Brishbane, Austrialia) state Key Laboratory of Earthquake Dynamics Institute of Geology China Earthquake Administration Beijing 100029 China. state Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China. School of Mathematics and Computational Science Zhongshan University Guangzhou 510275 China. Center for Analysis and Prediction China Seismological Bureau Beijing 100036 China. Quakes Department of Earth Science University of Queensland Brishbane Austrialia

To further investigate the mechanism of acoustic emission (AE) in the rock fracture experiment, moment tensor analysis was carried out. The AE sources characterized by crack sizes, orientations and fracture modes, are represented by a time-dependent moment tensor. Since the waveforms recorded by AE monitors correlate to the moment tensors, we prefer to select the P wave amplitude from the full-space Green's function of homogeneous and isotropic materials to determine the six independent components of the moment tensor. The moment tensor analysis was used to investigate the AE sources recorded in the experiment, and three types of micro-cracks were found, which are tensile mode, shear mode and mixture of the tensile and shear mode. In addition, the motion of micro-cracks was decided by eigenvectors of moment tensor. Results indicate that the moment tensor analysis may be used as a measurement to reflect the damage evolution of rock specimen.

关键词： moment tensor acoustic emission rock fracture.

Characteristics of the Middle-Late Triassic sedimentary facies assemblages in the Songpan-Ruoergai area

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Progress in Natural Science:Materials International 2007年第3期17卷 305-313页

作者： YAN Zhen, YU Liangjun, LI Jiliang, BIAN Qiantao, WANG Zongqi and YANG Yongcheng ( institute of geology, Chinese Academy of Geological Sciences, beijing 100037, china state Key Laboratory of Lithospheric Evolution, institute of geology and Geophysics, Chinese Academy of Sciences, beijing 100029. china Shaanxi Insititute of geology Survey, Xianyang 712000, china) [a]institute of geology Chinese Academy of Geological Sciences Beijing China [b]state Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China [c]Shaanxi Insititute of geology Survey Xianyang China

The Middle-Late Triassic sedimentary rocks in the Songpan-Ruoergai area mainly consist of calcareous siltstone, muddy limestone, lithic arkose, feldspathic litharenite, mudstone, wormkalk, oolithic limestone, and conglomerate. Except for limestone bed increasing eastward longitudinally and vertically, the calcareous component of the sandstones increases obviously. Abundant benthic and plant fossils and their clasts occur within these rocks. The sedimentary structures predominately contain flaser, parallel, tabular, wavy, and herringbone cross beddings. These data coevally imply that the Middle-Late Triassic sediments deposited in the fluvial, lake and tide environments. Additionally, the rocks display graded, parallel, hummocky beddings, and sandy lamination, a feature characteristic of storm deposits.

关键词： Middle-Upper Triassic fluvial-lake environments tide environment tempestite Songpan-Ruoergai

Thermal Structure and Rheology of the Upper Mantle beneath Guangdong and Hainan Provinces,china

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Continental Dynamics 1999年第1期 23-32页

作者： LIN Chuanyong and SHI Lanbin institute of geology, seismological bureau of china, beijing 100029. china HAN Xiuling institute of geology, Chinese Academy of Sciences, beijing 100029. china CHEN Xiaode institute of geology, seismological bureau

The geotherm and rheology of the upper mantle beneath Guangdong and Hainan Provinces are derived from the detailed study of spinel lherzolite and garnet websterite xenoliths from these areas. The constructed upper mantle geotherm is higher than the oceanic geotherm, but is slightly lower than those for the upper mantle beneath eastern china constructed by Xu et al. (1995) and for southeastern Australia constructed by O’Reilly et al. (1985). The high geotherm is considered to be related to the upper mantle diapir that occurred in this area. The crust mantle boundary defined by this geotherm is about 33 km deep, indicating the underplating of upper mantle materials. The rheologic features of the xenoliths show that the upper mantle beneath these areas was subjected to a relatively strong deformation process, which might be related to upper mantle diapir. During this process the differential stress might reach up to 50 MPa. As a result, high strain rate, low viscosity zones occurred at the depth of 6. km. These zones are believed to be upper mantle shear zone. The lithosphere asthenosphere boundary was deduced to be at the depth of about 85 km. All these results coincide well with the available geophysical data.

关键词： mantle xenolith upper mantle geotherm rheology Guangdong Province Hainan Province

Age of Yingfeng rapakivi granite pluton on the north flank of Qaidam and its geological significance

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Science china Earth Sciences 2004年第4期47卷 357-365页

作者： XIAO Qinghui1,2, LU Xinxiang1,3, WANG Fei4, SUN Yangui5, WEI Xiangdong3 & XING Zuoyun6.1. Division of Granite geology, china Geological Survey, Yichang 443003, china 2. Information Center of Ministry of Land and Resources, beijing 100812, china 3. Geological Survey of Henan Province and institute of Geological Research of Henan Province, Zhengzhou 450053, china 4. Geological institute, china seismological bureau, beijing 100029. china 5. Geological Survey institute of Qinghai Province, Xining 810032, china 6. china University of Geosciences, Wuhan 430074, china Division of Granite geology China Geological Survey Yichang 443003 China Information Center of Ministry of Land and Resources Beijing 100812 China Geological Survey of Henan Province and institute of Geological Research of Henan Province Zhengzhou 450053 China Geological institute China Seismological Bureau Beijing 100029 China Geological Survey institute of Qinghai Province Xining 810032 China china University of Geosciences Wuhan 430074 China

The Yingfeng rapakivi granite on the north flank of Qaidam is a newly discovered Proterozoic rapakivi pluton in china, which was found after the discovery of Shachang rapakivi in Miyun County, beijing and Kuandian rapakivi in Jilin Province. Yingfeng rapakivi pluton is ex-posed on the north side of the suture belt between Qinling-Kunlun orogenic belt and North china plate. U-Pb zircon isotopic dating and Ar-Ar isotopic dating of both hornblende and K-feldspar from the Yingfeng rapakivi granite have been conducted. The results show that the age of (1776.33)Ma at the upper intercept in Concorde diagram represents the age of formation of the plu-ton, whereas the age of (526.281) Ma at the lower intercept and Ar-Ar mineral dating of horn-blende and K-feldspar correspond to the age of a later event affecting the pluton, suggesting that Yingfeng pluton has ever been affected by strong regional Caledonian-Hercynian tectonic movement after its formation. The discovery of middle Proterozoic Yingfeng rapakivi granite pro-vides a petrologic evidence for the timing of cratonization of both the continental crust basement in western china and the basement of the North china plate and for a rifting event taking place in the mid-Proterozoic, suggesting that an amalgamation of ancient china continents had ever happened during the L liang Movement?between the early Proterozoic and the mid-Proterozoic.

关键词： rapakivi, U-Pb dating, Ar-Ar dating, Kunlun-Qinling orogenic belt.