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
- Most Read
- Most Cited
- Most Downloaded
2005, 79(6).
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 new theories and technologies of geological exploration. Those of scientific interest to the geological community in C…
ZHENG Miaping , , YUAN Heran , , ZHAO Xitao , LIU Xifang , R & D Center for Saline Lake , Epithermal Deposit , Chinese Academy of Geological Sciences , Beijing , Institute of Mineral Resources , Chinese Academy of Geological Sciences , Beijing Open Laboratory of Saline Lake Resources , Environment , Chinese Academy of Geological Sciences , Beijing
2005, 79(6).
Abstract:Lake geomorphology and high-level lacustrine deposits since the mid-late Pleistocene are well preserved inlakes of the Qinghai-Tibet Plateau. According to geological surveys of 17 lake districts in different locations of the plateau,combined with interpretations of satellite images and topographic maps, the authors studied the timing of formation andscopes of the pan-lake areas of the plateau and their paleoclimate. The latest two high lake levels (overflow surfaces) onthe Qinghai-Tibet Plateau in the Quaternary occurred at ~40 to 30/35 ka and ~65 to 53 ka respectively. In these timeintervals, the plateau was covered by huge interconnected pan-lake systems with a total area of ~36 km2 and a total volumeof lake water of >530 million km2, which are about 38 times and 659 times larger than those of the modern lakesrespectively. Before this pan-lake period in the late Pleistocene, there had been three high lake levels that occurred at ~132?112 ka, 110?95 ka and 91?72/~83?75 ka respectively, suggesting that the late Quaternary climate on the plateau wasunstable and changed rapidly. The ~40?30 ka high lake level also appeared in the Tengger desert north of the plateau,suggesting that there existed very strong summer monsoons from South Asia then; the variation in solar radiation with a20,000 precessional period has special importance for the high-altitude Qinghai-Tibet Plateau in the low-latitude zone ofthe Earth. Around 30 ka, the pan-lakes at the peripheries of the Qinghai-Tibet Plateau drained out suddenly with rapiduplift of the plateau and cooling. In a short time the huge amount of cold lake water emptied into the Indian Ocean andWestern Pacific. The draining event of the pan-lakes brought about the environmental changes of rivers and lakes atperipheries of the plateau.
YU Wen Nanjing Institute of Geology , Palaeontology , Chinese Academy of Sciences , Nanjing , Jiangsu , China
2005, 79(6).
Abstract:1 Introduction In a recent paper, Qian (2001) claimed that Yangtzedonta primitiva Yu, 1985 is a junior synonym of Xianfengella prima He and Yang, 1982. He also supposed that Maikhanella pristinis (Jiang), Heraultipegma yunnanense He and Yang and Xianfengoconcha elliptica Zhang were representatives of the early evolutionary sequences of shelled molluscs. Herein, Qian’s conclusion are further considered. 2 The Genuine Holotype of Yangtzedonta primitiva Yu In 1985, the author erected …
XIAO Xuchang , WANG Jun , SU Li , JI Wenhua , SONG Shuguang Institute of Geology , Chinese Academy of Geological Sciences , Beijing , Geological Lab Center , China University of Geosciences
2005, 79(6).
Abstract:1 Introduction The Kuda ophiolite occurred in the western Kunlun Mountains, which lies about the intersection of longitude 77°10′ E and latitude 36°45′ N (Figs. 1, 2). The upper portion of the ophiolite mainly consists of a thick layer of basaltic pillow lavas, which was well exposed along the high way from Xinjiang Uygur Autonomous Region to the western Tibetan Plateau, and the middle-lower part, the mafic-ultramafic cumulates and upper mantle rocks occur at the top of the mountain n…
YIN Hongfu , TONG Jinnan , ZHANG Kexin Lab of Biological , Environmental Geology , China University of Geosciences , Wuhan , Hubei , State Key Lab of Geological Process , Mineral Resources , China University of Geosciences , Wuhan , Hubei
2005, 79(6).
Abstract:1 Introduction The Global Stratotype Section and Point (GSSP) of the Permian-Triassic Boundary (PTB) has been ratified by IUGS in 2001 (Yin et al., 2001). It is defined at the base of the Hindeodus parvus horizon, i.e. the base of Bed 27c of Meishan Section D, Changxing County, Zhejiang Province, South China. The PTB is important because it is not only an erathem boundary but also a great turning point of geological history symbolized by profound global changes and the strongest …
JIANG Dayong , Ryosuke MOTANI , LI Chun , HAO Weicheng , SUN Yuanlin , SUN Zuoyu , Lars SCHMITZ Department of Geology , Geological Museum , Peking University , Yiheyuan Str. , Beijing , China , Department of Geology , University of California , Davis , California , USA Institute of Vertebrate Paleontology , Paleoanthropology , Chinese Academy of Science , Xizhimenwai Street , Beijing , China
2005, 79(6).
Abstract:1 Introduction The Guanling Biota is characterized by abundant, well-preserved Late Triassic fossils notably marine reptiles and crinoids, and especially complete articulated ichthyosaur skeletons of large-size up to more than 10 m and the first Chinese thalattosaurs and placodonts. This fauna is attracting more and more interest from scientists all over the world and thus the time is right for a review of the taxonomic diversity. Mu’s (1949) description of several crinoid species from Gua…
DENG Tao Institute of Vertebrate Paleontology , Paleoanthropology , Chinese Academy of Sciences , Beijing ,
2005, 79(6).
Abstract:The Hezheng area of Gansu Province produces the most abundant mammal fossils in China as well as the whole Eurasia, and it also produces other Cenozoic fossils of different animals and plants. Therefore, all of them are named the Hezheng Biota. Mammals are very sensitive to environmental changes, and thus the evolution of mammalian faunas in the Hezheng area reflects the strong uplift of the Tibetan Plateau during the Late Cenozoic, which dramatically affects environmental changes. In the Hezheng area, micromammals are not very rich, but some of them still are important. It is relatively uncommon that three primates are found from the Middle Miocene and the Early Pleistocene deposits. Since the Middle Miocene, carnivores have become important components in the ecosystem of the Hezheng area, and dominated in the Early Pleistocene. The Middle Miocene is a time of high diversity for Proboscidea, characterized by shovel-tusked elephants. Perissodactyls in the Hezheng area are very abundant, especially Late Oligocene and Late Miocene rhinoceroses as well as the Late Miocene and Early Pleistocene horses. From the Middle Miocene, artiodactyls became important components of the mammalian faunas, especially bovids.
Loren E. BABCOCK , Ronald L. PARSLEY
2005, 79(6).
Abstract:A Burgess Shale-type biota is, in part, characterized by a wide diversity of taxa and soft-part preservation. Each provides unique historical insights into early metazoan evolution. Among the more than 40 globally distributed biotas, the early Cambrian Chengjiang and Middle Cambrian Burgess-type biotas are the largest. The Kaili Biota, from the earliest Middle Cambrian of Guizhou, China, contains representatives of 110 metazoan genera belonging to 10 phyla. It contains many well-persevered soft-bodied specimens. This Chinese biota has become the third most taxonomically diverse Burgess Shale-type fauna. Because the Kaili Biota formed in an outer-shelf environment, its main faunal character is large numbers of eocrinoids and planktoic trilobites. The Kaili is younger than the Chengjiang Biota but older than the Canadian Burgess Shale Biota; it shares 30 genera with the Chengjiang and 38 genera with the Burgess Biota. The Kaili Biota displays a taphonomic window to the diversification and evolution of marine offshore organisms covering 5.13 million years between the Early and Middle Cambrian.
2005, 79(6).
Abstract:The cross-section and surface structures of wing membranes from the ctenochasmatid pterosaur Beipiaopterus chenianus were observed through a scanning electron microscope (SEM). The results show that the wing membrane contains a high density of blood vessels, implying strong thermoregulatory function, similar to that of a bat wing membrane. This is the first comparison of the microstructures of pterosaur wing membranes with those of the modern bat. It is inferred that a bat-like physiology exists, at least in relatively small pterosaurs suggesting that these pterosaurs were warm-blooded, active fliers.
QIAN Yi Nanjing Institute of Geology , Palaeontology , Chinese Academy of Sciences , Nanjing , Jiangsu ,
2005, 79(6).
Abstract:Scientific discussion and argument should be based on the truth, and forgery shall be publicly condemned. During recent years, Yu Wen not only continually submitted manuscripts to the Chinese and foreign periodicals to argue about the validity of Yangtzedonta primitiva, but also defamed other people of “forging” through private letters and e-mails. Now it is the time to give a formal response to Yu’s accusations. Yu’s manuscript “Yangtzedonta is not Xianfengella” was submitted to Acta…
DONG Guochen , , MO Xuanxue , ZHAO Zhidan , GUO Tieying , WANG Liangliang , CHEN Tao State Key Laboratory of Geological Processes , Mineral Resources , China University of Geosciences , Beijing , School of Earth Science , Resources , China University of Geosciences , Beijing , E-mail: moxx@cugb.edu.cn Hebei Bureau of Geology , Mineral Exploration , Development , Shijiazhuang , Hebei
2005, 79(6).
Abstract:1 Introduction Mo et al. (2005) determined that magma mixing and mingling took place extensively in the Gangdisê magmatic belt around 50 Ma, and argued that magma mixing was genetically related to underplating of mantle-derived magmas beneath that belt. Underplating, as one of the major mechanisms for crustal growth, can occur in the environments of convergent plate boundaries, subduction and collision zones, and in intra-plate settings such as continental flood basalt provinces (Wilson, 19…
2005, 79(6).
Abstract:1 Introduction The Tongling area is one of the largest copper and gold mineralization areas related to granitoids in China, and the accurate ages of intrusions are the basis for exploring the dynamics of magmatism and mineralization. Previous researchers have conducted extensive geochronology investigations about intrusions and mineralization, including the K-Ar, 40Ar-39Ar, Rb-Sr and U-Pb methods, but there are large differences between the ages yielded. K-Ar ages range from 87 Ma to 186…
DAI Lidong , LI Heping , LIU Congqiang , SHAN Shuangming , CUI Tongdi and SU Genli Laboratory of the Earth’s Interior Materials and Fluid Geochemistry , Institute of Geochemistry , Chinese Academy of Sciences , Guiyang , Guizhou , Graduate School of Chinese Academy of Sciences , Beijing Institute of Geochemistry , Chinese Academy of Sciences , Guiyang , Guizhou University of Guizhou , Guiyang , Guizhou
2005, 79(6).
Abstract:1 Introduction recognized and accepted by more and more experts engaged in experimental research at high temperature and In-situ laboratory measurement of the electricity of high pressure. This method has been regardedgeological materials at high temperature and high pressure internationally as the most advanced one for the in-situis an important approach to revealing the composition, laboratory measurement of the electric properties ofstructure and properties of materials in the deep interior…
HUA Renmin , CHEN Peirong , ZHANG Wenlan , YAO Junming , LIN Jinfu , ZHANG Zhanshi , GU Shengyan , LIU Xiaodong , QI Huawen State Key Laboratory for Mineral Deposit Research , Nanjing University , Nanjing , China ,
2005, 79(6).
Abstract:1 Introduction major part of Guangdong (Fig.1). The Nanling Range is an important area in China in Geographically the Nanling Range stands for a nearly terms of either mineral resources or geological scientificwest-east-trending mountain chain in the boundary region research. Large-scale metallogeneses, especially suchof Hunan Province, Guangxi Zhuang Autonomous Region , nonferrous and rare metals closely related with MesozoicJiangxi and Guangdong Provinces in the central part of granit…
CAI Gengqing , ZHANG Zimin , LI Shengxiang Beijing Research Institute of Uranium Geology , Beijing ,
2005, 79(6).
Abstract:According to the oxidation intensity of ore-hosting sandstone, the interlayer oxidation zone of the Shihongtansandstone-type uranium deposit in the Turpan-Hami basin can be divided into 4 geochemical subzones, namely, intensely-oxidized, weakly-oxidized, redox and unoxidized primary subzones. The elemental geochemical characteristics of thefour subzones have been studied in detail, and the results show that U, together with other elements such as Re, Mo, Se, Sr,S, REE, Corganic etc., is enriched in the redox subzone. Re and U have similar geochemical properties in the reduction-oxidation process. The geochemical properties of Mo and Se are similar to those of U in the reduction condition, butdifferent from those of U in the oxidation condition. It is proposed that the ore-hosting layers can provide a curtain mountof uranium for uranium mineralization.
ZHAO Wenzhi , WANG Zecheng , CHEN Menjin , ZHENG Hongju Research Institute of Petroleum Exploration , Development , Petrochina , Beijing ,
2005, 79(6).
Abstract:1 Introduction The “sweet spot” refers to high-quality gas layers existin in a large area of tight gas resources and the “sweet spot As an unconventional natural gas, tight sandstone gas strategy refers to prospecting rich reserves with higresources are plentiful in the world. In the United States, permeability. In the western Canadian basins, “sweethe amount of tight sandstone gas is more than 15,000 Tcf spots” are concentrated in high-permeability reservoi(Surdam, 1995; Kuuskraa, 199…
2005, 79(6).
Abstract:Morphologic Differentiation and Taxonomy of Anisograptus from the Lower OrdovicianLI Ming, FENG Hongzhen and LIU Bo(Department of Earth Sciences, Nanjing University, Nanjing, Jiangsu 210093; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing, Jiangsu 210008)Specimens from the Hule area of Ningguo County, Anhui Province and data of all 25 known species and subspecies shows that Anisograptus has apparent morphologic differentiation in the length of primary stripes, the…
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