Chief Editor:HOU Zengqian
Governing Body:China Association for Science and Technology
Organizer:Geological Society of China
start publication :1922
ISSN:ISSN 1000-9515
CN:CN 11-2001/P
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Junchang , JI Qiang Institute of Geology , Chinese Academy of Geological Sciences , Beijing ,
2005, 79(2).
Abstract:Based on a nearly complete skeleton with skull from the Early Cretaceous of Liaoning Province, a new ornithocheirid pterosaur: Boreopterus cuiae gen. et sp. nov. is erected. Boreopterus cuiae is different from other pterosaurs preserved with skulls known from the western liaoning Province and its neighboring areas. This new pterosaur has more and larger teeth than those in other ornithocheirids. Its anterior nine pairs of teeth are larger than other teeth. The fourth pair of upper and lower teeth are slightly larger than the third pair. Overall, Boreopterus cuiae shows much small range of tooth size variation than Anhanguera piscator and Coloborhynchus robustus. The new taxon shares with other ornithocherids in having a relatively large size of the third and fourth pairs of teeth.
DONG Zhiming , lv Junchang Research Center of Paleontology , Stratigraphy , Jijin University , Changchun , Institute of Paleontology , Paleoanthropology , Chinese Academy Sciences , Beijing Institute of Geology , Chinese Academy of Geological Sciences , Beijing ,
2005, 79(2).
Abstract:Based on a nearly complete lower jaw from the Early Cretaceous of Liaoning Province, a new ctenochasmatid pterosaur: Liaoxipterus brachyognathus gen. et sp. nov. is erected. Liaoxipterus brachyognathus is different from any known pterosaurs with skulls preserved from western Liaoning Province and its peripheral areas in that the anterior part of the mandibular symphysis is expanded, being widest between the fourth alveolus of each side. Liaoxipterus brachyognathus is assigned to Ctenochasmatidae based on the following characters: the rounded anterior end of the lower jaw is spatulated and dorsoventrally flattened and marked heterodonty in the dentition is absent. It differs from other ctenochasmatid pterosaurs in having relatively small number of teeth. Liaoxipterus is distinguished from some ornithocheirids, which have expanded anterior parts of the mandibular symphyses, such as Anhanguera piscator, Coloborhynchus robustus in which the teeth of the new pterosaur are not as variable.
YOU Hailu , XU Xing Institute of Geology , Chinese Academy of Geological Sciences , Beijing , Institute of Vertebrate Paleontology , Paleoanthropology
2005, 79(2).
Abstract:A new specimen consisting of a complete skull and lower jaw was discovered from the Lujiatun bed of the Lower Cretaceous Yixian Formation in the Lujiatun site, Beipiao, western Liaoning Province. It represents an adult specimen of Hongshanosaurus houi. Comparative studies show that Hongshanosaurus is distinguishable from its sister taxon Psittacosaurus by having the preorbital portion about half of the basal skull length, and the elliptical external naris, orbit, and a lower temporal fenestra oriented caudodorsally.
XIA Linqi , LI Xiangmin , XU Xueyi , XIA Zuchun , MA Zhongping , WANG Lishe Xi''''an Institute of Geology , Mineral Resources , China Geological Survey , Xi''''an , Shaanxi
2005, 79(2).
Abstract:The Bayan Gol ophiolite fragment is a portion of the North Tianshan Early Carboniferous ophiolite belt. This ophiolite belt represents a geological record of an Early Carboniferous "Red Sea type" ocean basin that was developed on the northern margin of the Tianshan Carboniferous-Permian rift system in northwestern China. The late Early Carboniferous Bayan Gol ophiolite suite was emplaced in an Early Carboniferous rift volcano- sedimentary succession of shallow-marine to continental facies (Volcanics Unit). Ophiolitic rocks in the Bayan Gol area comprise ultramafic rocks, gabbros with associated plagiogranite veins, diorite, diabase, pillow basalts and massive lavas. The Early Carboniferous rifting and the opening process of the North Tianshan ocean basin produced mafic magmas in composition of tholeiite and minor amounts of evolved magmas. Compositions of trace elements and Nd, Sr and Pb isotopes reveal the presence of two distinct mantle sources: (1) the Early Carboniferous rift mafic lavas from the Volcanics Unit were generated by a relatively low degree of partial melting of an asthenospheric OIB-type intraplate source; (2) younger (late Early Carboniferous, ~324.8 Ma ago) mafic lavas from the Ophiolite Unit were formed in a relatively depleted MORB-like mantle source, located in the uppermost asthenosphere and then gradually mixed with melts from the asthenospheric OIB-like mantle. A slight interaction between asthenosphere-derived magmas and lithospheric mantle took place during ascent to the surface. Subsequently, the most depleted mafic lavas of the ophiolite assemblage were contaminated by upper-crustal components (seawater or carbonate crust).
WU Cailai , SHI Rendeng , YANG Jingsui , YANG Hongyi , Joseph L. WOODEN , ZHENG Qiuguang , CHENG Shengyong Continental Dynamics Laboratory , Institute of Geology , Chinese Academy of Geological Sciences , Beijing , China , Chungkung University , Tainan , Taiwan , China Stanford University , USA
2005, 79(2).
Abstract:1 IntroductionThree E-W-trending lithologic belts of the Paleozoic ageoccur in the eastern part of north Qilian. From north tosouth they are (a) the Huangyanghe-Gulang-Dajing-Beidengzi belt (the northern lithologic belt), (b) theLeigongshan-Maomaoshan-Laohushan belt (the middlelithologic belt) and (c) the Mayaxieshan-Shihuigou-Beiyinbelt (the southern lithologic belt) (Fig. 1). The rocks inthese belts are mainly Paleozoic volcanics and sandysiltstone. There are some Mesozoic and Cenozo…
2005, 79(2).
Abstract:1 IntroductionSoutheast China lies at the plate junction between thePacific and the Eurasian plates, where granitoids andvolcanic rocks are widely exposed and large-scalemineralization was developed in the Late Mesozoic.Therefore, many geologists have paid much attention to thegeodynamics in this region (Jahn et al., 1990; Lampierre etal., 1997; Zhou and Li, 2000; Li, 2000; Chen et al., 2002; Liet al., 2003). Many achievements in scientific research onthe Late Mesozoic granitoids and vol…
YU Fusheng , HAN Song , MA Zhibang , XIE Ruijie Institute of High Energy Physics , Chinese Academy of Sciences , Beijing , Key Laboratory for Hydrocarbon Accumulation Mechanism , Ministry of Education , University of Petroleum , Beijing Institute of Geology , Geophysics , Chinese Academy of Sciences , Beijing
2005, 79(2).
Abstract:1 IntroductionThe Longgang volcanic cluster located in the middle partof Longgang Mountain is one of the active volcanoes innortheast China, potentially hazardous of explosion in thefuture (Fan et al., 2002). Within an area of 1700 km2, thereare about 160 volcanic cones, craters and maars (Ou, 1984).Among these volcanoes, the Jinlongdingzi and Dayizishanvolcanoes which are well studied have experiencedrepetitious eruptions (Wang and Jin, 1999). Detailedresearch on their eruption cycles is …
YU Bingsong , DONG Hailiang , CHEN Jianqiang , LI Xingwu , LIN Changsong State Key Laboratory of Geological Processes , Mineral Resources , China University of Geosciences , Beijing , China , Key Laboratory of Lithosphere Tectonics , Lithoprobing Technology of Ministry of Education , China University of Geosciences , Beijing , China Department of Geology , Miami University , Oxford , OH , USA
2005, 79(2).
Abstract:1 IntroductionCherts are volumetrically a minor yet ubiquitouscomponent in the global sedimentary record. It is veryimportant to determine their original depositional settingsbecause many chert sequences are located at keystratigraphic intervals or in structurally allochthonouspackages, and they provide critical information on theformation of sedimentary basin and tectonic activity(Murray, 1994). Chemical methods of delineatingdepositional environments are becoming increasinglysophisticated an…
XU Jiandong , HUANG Jianfa , WEI Fuquan , YAN Yunpeng , LI Yaping , LIN Chien-te Institute of Geology , China Earthquake Administration , Beijing , China , Earthquake Administration of Fujian Province , Fuzhou , Fujian , China China Aero Geophysical Survey , Remote Sensing for Land , Resources , Beijing , China Leader University , Tainan , Taiwan , China
2005, 79(2).
Abstract:1 IntroductionIn recent years, a great deal of efforts has been made tostudy fractal properties of time, space, and intensity ofseismic activities (An et al., 1989; Wang and Lin, 1993;Wang, 1995; Godano, Alonzo and Bottari, 1996).However, most previous studies have been limited to singlefractal (capacity dimension D1 and information dimensionD2). Scientists have found that a single fractal usually is notenough to characterize temporal and spatial fractalproperties of earthquakes, and the l…
WANG Denghong , MAO Jingwen , YAN Shenghao , YANG Jianmin , XU Jue , CHEN Yuchuan , XUE Chunji Institute of Mineral Resources , Chinese Academy of Geological Sciences , Beijing , Chinese Academy of Geological Sciences , Beijing Department of Geological Sciences , Chang''''an University , Xi''''an , Shaanxi
2005, 79(2).
Abstract:1 IntroductionIn general, gold deposits in central and eastern Chinawere formed mainly in the mesozoic (Hua and Mao, 1999;Mao and Wang, 2000; Wang et al., 2001b), those innortheastern China formed from Proterozoic to Cenozoic(Chen et al., 2000; 2001), those in northwestern Chinamainly in the Paleozoic (Li et al. 1998; Rui et al. 2002;Wang et al. 2002a), whereas the gold deposits insouthwestern China were formed mainly in the Himalayas(Wang et al., 1998; 2000; Chen and Wang, 2001). Inso…
YAN Yi , LIN Ge , XIA Bin , LI Zi''''an , LI Zhongcheng Key Laboratory of Marginal Sea Geology , Guangzhou Institute of Geochemistry , South China Sea Institute of Oceanology , Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Wushan , Guangzhou , Guangdong , Jidong Oil , Gas Administration , Tangshan , Hebei
2005, 79(2).
Abstract:1 IntroductionThe Yan-Liao orogenic belt lies in the northern segmentof the North China Block (NCB) (Fig. 1). During Mesozoicto Cenozoic time, it experienced intense tectono-magmaticactivation, accompanied by the formation ofintracontinental basins and widespread magmatism and is avery important area to study continental dynamics andMeso-Cenozoic tectonic evolution in eastern China. Mostof previous work in this area has focused on the formationof basement, structural style and volcano-se…
LI Huaqin , CHEN Fuwen , LU Yuanfa , YANG Hongmei , GUO Jing , MEI Yuping Yichang Institute of Geology , Mineral Resources , Gangyao Road , Yichang , Hubei ,
2005, 79(2).
Abstract:1 IntroductionMineralization in E. Xinjiang constitutes an importantpart of the Mid-Asian Metallogenetic Province. A greatdeal of nonferrous, ferrous, rare and noble metaldeposits of different genetic types and ages were formedduring different crustal evolution stages and werecontrolled by regional tectonic evolution. Large-scalemineralization of metallic deposits and relatedmagmatism mainly occurred during the Carboniferous toPermian periods (Li et al., 1998; Ji et al., 1999; Mao etal., 2…
SHEN Ping , SHEN Yuanchao , ZENG Qingdong , LIU Tiebing , LI Guangming Institute of Geology , Geophysics , Chinese Academy of Sciences , Beijing ,
2005, 79(2).
Abstract:1 IntroductionThe Sawur gold belt is an eastward extending section ofthe Zarma-Sawur gold-copper belt in Kazakhstan, locatedin the Sawur Mountain, northern Xinjiang, and mainlycomprises two large- to medium-sized gold deposits,accompanied by five small gold deposits and a series ofgold ore spots (Yin et al., 1996, 2003; Wang et al., 1999; Liet al., 2000; Liu et al., 2003; Shen et al., 2004a). TheKuo'erzhenkuola and Bu'erkesidai gold deposits are thebiggest and most important ones in this …
ZHU Lixin , MA Shengming , WANG Zhifeng China University of Geosciences , Beijing , Institute of Geophysical , Geochemical Exploration , Chinese Academy of Geological Sciences , Langfang , Hebei
2005, 79(2).
Abstract:As a result of systematic study on heavy minerals in soils at city and town areas and their surroundings, cinnabar was discovered for the first time in areas of Hg anomalies in China, and it was found that the distribution of cinnabar was basically coincident in scope with that of Hg anomalies, showing that Hg anomalies were'closely related to cinnabar. This finding provides a theoretical basis for a verification of Hg anomalies in soils in city and town areas and their surroundings, as well as evaluation of its ecological effects, and is significant to revealing the occurrence modes and origin of Hg in soils.
ZHENG Yongchun , WANG Shijie , OUYANG Ziyuan , LI Xiongyao , Institute of Geochemistry , Chinese Academy of Sciences , Guiyang , Guizhou , Graduate School , Chinese Academy of Sciences , Beijing
2005, 79(2).
Abstract:1 IntroductionUnlike other sensors that passively sense radiation fromtargets illuminated by the Sun, microwave remote sensinginstruments can function day and night and, at somewavelengths, they will not be interfered significantly byatmospheric conditions (e.g. clouds). Microwave remotesensing signals are sensitive to the surface roughness, theinternal structure, and the complex dielectric constant ofthe sensing objective, i.e., they can provide information onsubsurface structure and volume c…
2005, 79(2).
Abstract:Fauna Replacement Event of the Middle and Late Permian inthe West Qinling MountainsZeng Xuelu and Gao Jinhan(China University of Geosciences, Beijing 100083)The middle and late Permian faunas from the west QinlingMountains have suffered a replacement event during thedeveloping history. It behaves that the fusulinids occurring fromthe bottom of the late Maokouan Dieshan Formation of the middlePermian were sharply reduced or disappeared, and thebrachiopods were prosperously developed. T…
2005, 79(2).
Abstract:http://www.geoanalysis2006.com1. Title of the ConferenceGeoanalysis2006—The 6th International Conference on the Analysis of Geological and Environmental Materials2. Subject of the ConferenceModern Analytical Technologies for Resource and Environment MaterialsMain Topics for the Symposia:(1) Analytical techniques for environmental and geochemical studies, including automation, speciation, isotopic andorganic analysis.(2) Advances in microprobe techniques and relevant reference material…
2005, 79(2).
Abstract:1. Papers should be devoted mainly to various aspects of research concerning geosciences and related disciplines in China, such asstratigraphy, paleontology, origin and history of the Earth, structural geology, tectonics, mineralogy, petrology, geochemistry,geophysics, geology of mineral deposits, hydrogeology, engineering geology, environmental geology, regional geology and newtheories and technologies of geological explpration. Those of scientific interest to the geological community in Chin…
Chief Editor:HOU Zengqian
Governing Body:China Association for Science and Technology
Organizer:Geological Society of China
start publication :1922
ISSN:ISSN 1000-9515
CN:CN 11-2001/P