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2009 Vol. 20, No. 5

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Lithogeochemistry of Volcanic Rocks and Hosted Melt Inclusions in Wudalianchi,Heilongjiang, China
李霓, 樊祺诚, 孙谦, 孙如波
2009, 20(5) doi: 10.1007/s12583-009-0067-3
Wudalianchi (五大连池) volcanoes are famous Quaternary ones with fairly good volcanic landscape in Northeast China. The volcanic rocks are phonotephrite, tephri-phonolite, trachyandesite, and basaltic trachyandesite with SiO2 contents of 47.3 wt.%–54.2 wt.%. The characteristic of high K2O content in Wudalianchi volcanic rocks suggests that they probably share a common potassic magma source. The magma evolutions of Wudalianchi volcanic rocks are similar, while the new eruption products of Laoheishan (老黑山) and Huoshaoshan (火烧山) volcanoes are slightly more evolved than the old eruption materials, i.e., the magma of the new eruptions in 1719–1721 from the above two volcanoes is the evolved magma in underground chamber. The main phenocrysts of Wudalianchi volcanic rocks are olivines, clinopyroxenes, and some characteristic K-rich leucites...
Detrital Composition of Lower–Middle Jurassic Sandstones from Huangshi, Hubei: Implication for Provenance Types and Geotectonics
杨江海, 杜远生, 覃永军, 白雪峰
2009, 20(5) doi: 10.1007/s12583-009-0068-2
The detrital modes of the sandstones from the south basin of Dabie (大别) orogenic belt during the Early–Middle Jurassic are complex due to multiple supplying. Detrital compositions of medium-coarse sandstones from the Lower–Middle Jurassic, Huangshi (黄石), show three main prove-nances: recycled ororgen, volcanic arc (arc orogen), and continental block on the bases of the Dickinson discriminating diagrams of modal composition and analysis of sandstone petrofacies...
Late Changhsingian (Latest Permian)Radiolarians from Chaohu, Anhui
Gui Biwen (桂碧雯), Feng Qinglai* (冯庆来), Yuan Aihua (袁爱华)
2009, 20(5) doi: 10.1007/s12583-009-0069-1
This article reports a radiolarian fauna from the upper Dalong (大隆) Formation, Pingdingshan (平顶山), Chaohu (巢湖), Anhui (安徽) Province, which includes 15 genera and 23 species. One new species, Copicyntra tongi Gui and Feng n. sp., is described. Comparison of the fauna, lithology and biotic associations with those from Meishan (煤山) D and Dongpan (东攀) sections shows that the Dalong Formation in the Pingdingshan Section is deposited in a deep-water shelf basin, about 60–200 m in depth. On the basis of the biotic composition, diversity and morphology, the microfossil fauna from the Pingdingshan Section can be divided into three sedimentary assemblages and the extinction processes of the assemblages are discussed.
New Insight into Oil and Gas Exploration inMiocene and Late Oligocene Strata inQiongdongnan Basin
于俊峰, 裴健翔, 许静
2009, 20(5) doi: 10.1007/s12583-009-0055-7
Oil and gas exploration prospect for the Miocene and Late Oligocene strata in Qiongdongnan (琼东南) basin are evaluated. The structural-sedimentary and reservoir characteristics are discussed and helpful conclusions are drawn. It was proved that there are mainly two reservoir and capping assemblages in Qiongdongnan basin by drilled wells, i.e., one assemblage of the second and the third members of Lingshui (陵水) Formation, upper Sanya (三亚) and Meishan (梅山) formations. According to hydrocarbon evaluation from burial history and well data, all source rocks in Yacheng (崖城) and Lingshui formations have reached the mature-overmature stage...
Aromatic Hydrocarbons as Indicators ofOrigin and Maturation for Light Oils from Panyu Lower Uplift in Pearl River Mouth Basin
Guo Xiaowen* (郭小文), He Sheng (何生)
2009, 20(5) doi: 10.1007/s12583-009-0063-7
Aromatic fractions of six light oils and two source rock samples from Panyu (番禺) lower uplift of Pearl River Mouth basin were analyzed using GC-MS (gas chromatography-mass spectrometric) technique. Thirteen aromatic series of hydrocarbons detected such as biphenyls, naphthalenes, phenanthrenes, dibenzothiophenes (more than two hundred aromatic hydrocarbon compounds) were used to analyze the origin and maturity of the light oils...
Preliminary Prediction and Evaluation onSource Rock in Low Exploration Basin—A Case Study from the Northeast Depression, South Yellow Sea Basin, East China
曹强, 叶加仁, 王巍, 石万忠, 陈春峰
2009, 20(5) doi: 10.1007/s12583-009-0070-8
Low exploration activity fields (e.g., deep formation, deep water, and new exploration areas) are of great importance for petroleum exploration. The prediction of source rocks is critical to the preliminary evaluation of low exploration activity fields, which will determine the early strategic electoral district and decision of exploration activity. The northeast depression is a new exploration area at the South Yellow Sea basin at present...
Magnetic Properties of Street Dust from Chibi City, Hubei Province, China: Its Implications forUrban Environment
刘庆生, 曾庆理, 杨涛, 邱宁
2009, 20(5) doi: 10.1007/s12583-009-0071-7
Magnetic measurements and heavy metal analyses were performed on street dusts from the main urban area of Chibi (赤壁) City, Hubei (湖北) Province, China. Results revealed that a PSD/MD (pseudo-single-domain/multi-domain) magnetite-like phase dominates the magnetic phases of the street dust. Concentration-related magnetic parameters, such as magnetic susceptibility (χ), anhysteretic remanent magnetization (ARM), and saturation isothermal remanent magnetization (SIRM) of samples increased in the main roads but appeared lower in the landscape area of the Lushui (陆水) Lake and closely correlated with the concentration of heavy metal Fe, Cu, and Co, and the correlation coefficients are 0.786 for Fe-χ, 0.548 for Cu-χ, and 0.580 for Co-χ, respectively...
3-D Seismic Identification and Characterization of Ancient Channel Morphology
蒲仁海, 朱李, 钟红利
2009, 20(5) doi: 10.1007/s12583-009-0072-6
It is easy to identify ancient fluvial morphologic types by the outcrop, log and core data. However, the horizontal distribution and geometry of the channels can only be identified and predicted by relying on the 3-D seismic data. The 3-D seismic horizon slices, especially, can play an important role in the sandstone prediction of meandering rivers, distributary channels and low-sinuosity channels. Every microfacies unit, including main channels, such as sinuous or branching channels, levee, crevasse channels, ligule crevasse splay and floodplain etc...
Numerical Simulation of Impact on Pneumatic DTH Hammer Percussive Drilling
Bu Changgen* (卜长根), Qu Yegao (瞿叶高), Cheng Zhiqiang (程志强), Liu Baolin (刘宝林)
2009, 20(5) doi: 10.1007/s12583-009-0073-5
The process of DTH (down-the-hole) hammer drilling has been characterized as a very complex phenomenon due to its high nonlinearity, large deformation and damage behaviors. Taking brittle materials (concrete, granite and sandstone) as impact specimens, the explicit time integration nonlinear finite element code LS-DYNA was employed to analyze the impact process and the penetration boundary conditions of DTH hammer percussive drilling system. Compared with previous studies, the present model contains several new features...
Hydrochemical and Isotopic Evidence ofOrigin of Thermal Karst Water atTaiyuan, Northern China
马腾, 王焰新, 郭清海, 闫春淼, 马瑞, 黄征
2009, 20(5) doi: 10.1007/s12583-009-0074-4
Thermal karst groundwaters with temperatures ranging from 32.8 to 62.5 ℃ were found at Taiyuan (太原) City, the capital of Shanxi (山西) Province. To identify the origin of the thermal groundwater, the following tracers were used in this study: δD, δ18O, 4He, 3He/4He, and major chemical constituents in water. Hydrochemical and isotopic data indicate that the thermal groundwaters in the basin area are a mixture of thermal waters from the West Mountain and those from the East Mountain...
Measurement of Joint Roughness Coefficient by Using Profilograph and Roughness Ruler
杜时贵, 胡云进, 胡晓飞
2009, 20(5) doi: 10.1007/s12583-009-0075-3
Joint roughness coefficient (JRC) is the key parameter for the empirical estimation of joint shear strength by using the JRC-JCS (joint wall compressive strength) model. Because JRC has such characteristics as nonuniformity, anisotropy, and unhomogeneity, directional statistical measurement of JRC is the precondition for ensuring the reliability of the empirical estimation method. However, the directional statistical measurement of JRC is time-consuming...
Lithogeochemistry of Volcanic Rocks and Hosted Melt Inclusions in Wudalianchi, Heilongjiang, China(Table)
李霓, 樊祺诚, 孙谦, 孙如波
2009, 20(5)
Hydrochemical and Isotopic Evidence of Origin of Thermal Karst Water at Taiyuan, Northern China(Table)
马腾, 王焰新, 郭清海, 闫春淼, 马瑞, 黄征
2009, 20(5)