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    中国百强科技报刊

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    中国高校百佳科技期刊

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    2006 Vol. 31, No. 6

    Display Method:
    Tropical Process and Its Periodicity in the Deep Sea Records
    TIAN Jun, WANG Pin-xian
    2006, 31(6): 747-753.
    Abstract:
    The earth'sorbital geometry configurates eccentricity, obliquity and precession, which control the seasonal and latitudinal distribution of the insolation on the earth's surface. In the periodic variations of the insolation, the precession cycles of ...
    Planktonic Foraminifer and Oxygen Isotopic Evidence of a Late Miocene Western Pacific Warm Pool
    LI Qian-yu, LI Bao-hua, ZHONG Guang-fa, ZHOU Zu-yi, CHENG Xin-rong, WANG Ji-liang, WANG Pin-xian
    2006, 31(6): 754-764.
    Abstract:
    The disappearance at ~10 Ma of the deep dwelling planktonic foraminifer Globoquadrina dehiscens from the western Pacific including the South China Sea was about 3 Ma earlier than its final extinction elsewhere. Accompanying this event at ~10 Ma was a...
    Records of Paleo-Monsoon of Core BAR9427 in Northeastern Indian Ocean during Last Glaciation
    DING Xuan, FANG Nian-qiao
    2006, 31(6): 765-772.
    Abstract:
    The climate was obviously instable in the last glacial cycle, especially in the Marine Oxygen Isotope Stage 3. The South Asian monsoon activities conflict with the glaciation and interglaciation rule. The paleo ceanographic study of the core BAR9427 ...
    Orbitally Tuned Time Scale Based on Climate Proxy Indicator of Grain Size Distribution in Nihewan Basin
    HAN Zhi-yong, LI Xu-sheng
    2006, 31(6): 773-779.
    Abstract:
    The Donggou Section located in the east of Nihewan basin contains a suite of strata consisted mainly of lacustrine sediments approximate to 100 m thick. Both grain size distribution and magnetic susceptibility are measured in successive samples colle...
    A Millennial Scale Mid-Pleistocene Paleoclimate Record of Planktonic Foraminifera from the Northern South China Sea Site 1144
    ZHENG Fan, LI Qian-yu, CHEN Mu-hong
    2006, 31(6): 780-786.
    Abstract:
    Planktonic foraminifera results from ODP Site 1144 in the northern South China Sea indicate that the Mid-Pleistocene climate transition is characterized by high-frequency changes on the millennial scale. In pace with glacial-interglacial cycles after...
    Blooming of Bacteria and Algae: Possible Killer of Devonian Frasnian-Famennian Mass Extinction
    XU Ran, GONG Yi-ming, TANG Zhong-dao
    2006, 31(6): 787-797.
    Abstract:
    Geochemical data from the Yangdi Section of Guilin, Guangxi, showed an oxygen-rich to dysaerobic environment with the vibrating rise in sea-level in the Late Frasnian Stage, Devonian. At the same time, δ13Ccarb and δ13Ckerogen increased from +0.43 (‰...
    Acritarch Assemblage in Yanchang Formation in Eastern Gansu Province and Its Environmental Implications
    JI Li-ming, WANG Shao-fei, XU Jin-li
    2006, 31(6): 798-806.
    Abstract:
    In this paper, the microfossil assemblage from drilling core samples of Xifeng oilfield is discussed with palynologic analystic method, to clarify terrestrial sediment environment of Yanchang Formation in Ordos basin during the Middle and Late Triass...
    Mesozoic Pulsative Upwelling Diapirs of Asthenosphere in West Liaoning Province
    SHAO Ji-an, CHEN Fu-kun, LU Feng-xiang, ZHOU Xin-hua
    2006, 31(6): 807-816.
    Abstract:
    Petrologicos-geochemical data reveals the compositional features of Mesozoic volcanic rocks in West Liaoning: (1) Relatively high values of Mg# and higher contents of Cr and Ni; (2) Most of volcanic magmas are derived from enriched lithospheric mantl...
    Geometry and Kinematics of Tectonic Evolution in Northern Part of Sulu Orogenic Belt
    WU Chong-long, ZHANG Shan-wen, MAO Xiao-ping, LIU Zhong-quan, SONG Li-jun, TONG Yan-ming
    2006, 31(6): 817-822.
    Abstract:
    Three layers are present in the middle and upper crusts in the northern border of Sulu orogenic belt, as revealed by the S-N-strike reflecting seismic profiles that cross the Zhucheng sag. These three layers are the uppermost sedimentary cover of Jia...
    Emplacement Dynamics of Fenghuangshan Pluton (Tongling, Anhui Province): Constraints from U-Pb SHRIMP Dating of Zircons and Structural Deformation
    ZHANG Da, WU Gan-guo, DI Yong-jun, ZANG Wen-shuan, SHAO Yong-jun, YU Xin-qi, ZHANG Xiang-xin, WANG Qun-feng
    2006, 31(6): 823-829.
    Abstract:
    Geodynamic settings play an important role in controlling generation, ascent and final emplacement of magma. Mesozoic intermediate-acid intrusive rocks are closely related with large scale mineralization in the Tongling metallogenic cluster area. The...
    Water in UHP Eclogites at CCSD: FTIR Analysis
    XU Wei, LIU Xiang-wen, JIN Zhen-min
    2006, 31(6): 830-838.
    Abstract:
    Along with the processes of continent crust subduction, the nominally anhydrous minerals (NAMs) in UHP rocks can transport some surface water into the deep upper mantle. Such water stored in the deep upper mantle plays an important role in the dynami...
    Strontium Isotope Composition and Its Characteristics Analysis of Cambrian-Ordovician Carbonate in Tazhong District, Tarim Basin
    HUANG Wen-hui, YANG Min, YU Bing-song, FAN Tai-liang, CHU Guang-zhen, WAN Huan, ZHU Jing-quan, WU Shi-qiang, WANG Xu
    2006, 31(6): 839-845.
    Abstract:
    In this paper, ICP-MS analytic technology is employed to test the strontium and manganese contents of 109 samples collected from four wells in Tazhong area, Tarim basin. In addition, strontium isotope composition tests have also been conducted, with ...
    Response of Dual Laterolog to Fractures in Fractured Carbonate Formation and Its Interpretation
    DENG Shao-gui, WANG Xiao-chang, FAN Yi-ren
    2006, 31(6): 846-850.
    Abstract:
    The estimation of fractures is a key to the evaluation of the fractured carbonate reservoirs. Many obstacles are present for the evaluation of this kind of reservoir because of its heterogeneously-distributed fractures and anisotropies. A three-dimen...
    Inversion of Stratal Carbonate Content Using Seismic Data
    XIONG Yan, ZHONG Guang-fa, LI Qian-yu, WU Neng-you, LI Xue-jie, MA Zai-tian
    2006, 31(6): 851-856.
    Abstract:
    Based upon the relationship between carbonate content and stratal velocity and density, we attempted to apply the artificial neural network to the inversion of carbonate content summarized from the high-resolution seismic data limited by controlled w...
    Electrical Property of Deep Structure in Songpan-Aba District
    CHEN Gao, WU Jian-sheng, YU Peng
    2006, 31(6): 857-860.
    Abstract:
    The magnetotelluric sounding (MT) surveying was recently conducted in the Songpan-Aba district in the northwest of Sichuan, a "delta" specific to the eastern part of the Tibetan plateau. The analysis of the two crossed MT inversion sections reveals a...
    Application of Multi-Fractal Filtering to Extraction of Geochemical Anomalies from Multi-Geochemical Backgrounds: A Case Study of the Southern Section of "Sanjiang Ore-Forming Zone", Southwestern China
    CHEN Yong-qing, ZHANG Sheng-yuan, XIA Qing-lin, LI Wen-chang, LU Ying-xiang, HUANG Jing-ning
    2006, 31(6): 861-866.
    Abstract:
    The southern section of "Sanjiang ore-forming zone" (the western Yunnan terrain), southwestern China, located at the joined belt between the Indian plate and Yangtze plate, is an important area of eastern Tethyan tectonic ore-forming domain. The poly...
    Measurement of Complex Permittivity of Dry Rocks and Minerals with Perturbation Method at 9 370 MHz
    ZHENG Yong-chun, OU YANG Zi-yuan, WANG Shi-jie, LI Chun-lai, FENG Jun-ming
    2006, 31(6): 867-872.
    Abstract:
    Resonant cavity perturbation method, widely used as an easy and fast method for determining dielectric properties of materials at microwave frequencies, is very sensitive to the measurement of the materials with low ε′ and tanδ values. However, it is...
    Application of Riverbed Quiferous System to Indoor Simulation of Decontamination of Aromatic Hydrocarbons
    LI Hai-ming, CHEN Hong-han, ZHENG Xi-lai
    2006, 31(6): 873-878.
    Abstract:
    In the five-month indoor earth-column experiment, three representative kinds of natural sand are analyzed, and the refluxes of domestic sewage are used to simulate the contaminated river flow. This indoor experiment aims at both the simulation of the...
    Responses of Groundwater Recharge and Pumpage to Change in Precipitation in Hebei Plain
    ZHANG Guang-hui, FEI Yu-hong, YANG Li-zhi, HAO Ming-liang, SHEN Jian-mei
    2006, 31(6): 879-884.
    Abstract:
    The research from 1986 to 2000 into the dynamic processes and interactions among annual precipitation, annual groundwater recharge from rainfall and annual pumpage for agriculture in Hebei plain to the south of Beijing and Tianjin, revealed the negat...
    Demarcation of Groundwater System of Big Karst Spring: A Case Study of Eastern and Western Mountain Areas, Taiyuan Basin
    HAN Dong-mei, XU Heng-li, LIANG Xing
    2006, 31(6): 885-890.
    Abstract:
    This paper takes the eastern and western mountain areas of Taiyuan basin, Shanxi Province as a case study. On the basis of groundwater system theory and geographic information system (GIS) technique, some quantitative or semiquantitative structural i...