煤系岩芯裂隙观测分析在推断断层方面的应用

随着煤炭工业的发展,隐伏煤田的地质勘探工作量日益增多。在地层露头资料缺乏的情况下,通过钻孔岩心裂隙的研究,找出岩芯裂隙性质及产状与附近断层性质及产状之间的成生联系,再配合其他地质及测井资料,在勘探阶段有助于正确判断钻孔所见断点的联接,促进地质构造的研究。      

三臂式地层倾角矢量图资料的地质解释

我队于1987年12月引进了以美国生产技术组装的,适合煤田测井使用的蒙特系列Ⅲ数字测井仪,该仪器配备有地层倾角测井装置。1988年及1989两年,在本队勘探项目登封县白坪井田、禹县新峰—矿及蔡寺—白沙找煤区,对18个钻孔进行了地层倾角测井。为比较分析某一地质现象倾角测井和钻探岩心的产状资料,测量了7孔岩心的各种产状     

中国地球物理学会工程地球物理专业委员会煤田测井联合会

煤田测井联合会简介：中国地球物理学会工程地球物理专业委员会煤田测井联合会在北京中地英捷物探仪器研究所的倡导和组织下。在老一辈煤田测井工作者的积极努力下,在广大煤田测井工作者的支持下,于2007年3月1日正式成立。煤田测井联合会是中国地球物理学会领导下的三级组织,是中国从事煤田地球物理测井工作的行业性协会,会员囊括我国境内的煤炭勘探企业、地质矿产勘探企业、核工业勘探企业、水文勘探企业、工程勘探企业、     

中国煤田测井技术发展历程及前景展望

煤田测井在确定煤层空间位置、研究沉积环境、解释煤岩力学性质、解决水文地质问题等方面具有独特的作用,是煤田地质很重要的一种勘探手段。通过回顾煤田测井技术及测井专业队伍50年的发展历程,展示煤田测井技术所取得的成绩和应用前景,以此纪念中国煤炭地质总局成立50周年。     

关于煤田测井层序地层学的展望

１９８７年诞生的层字地层学，将“改变一切与沉积有关的矿产的勘”；测井资料处理与解释的趋势是引进层序地层学的基本原理，研究煤田测井层序地层学问题，并建立其计算机工具，将对煤田勘探及方法的发展起推动作用。     

煤田地质勘探方法的重大进展

我国煤田地质勘探的传统方法是以钻探和测井为主.为改变这一状况,中国煤田地质局根据科技的发展,决定有系统地进行勘探方法改革,逐步推广采用综合勘探方法,即因地制宜地合理采用模拟地震、数字地震.化学探矿、地面测井及钻探等手段,尽量减少投入,以提高勘探效果.显示出我国在找煤和煤田勘探方法获得重大进展.现将中     

庆祝中国煤田地质创业四十周年学术报告交流会论文作者及论文题目

东北煤田预测的实践和认识 东北煤田地质局 刘世昌高分辨率中子俘获伽玛能谱测井在煤田勘探中的应用 浙江煤田地质局 韩长林艰苦奋斗开拓进取的四十年—四川煤田地质研究所的发展道路 四川煤田地质研究所 杜春芳奥灰岩岩溶发育地震勘探方法研究 水文局物测队 张延忠中国煤田的空气潜孔锤钻进 北京煤田地质队 李士民中国疆域板块构造的演化与煤盆地的分布 中国煤田地质总局 景玉龙T.K区煤层宏观结构的综合解释 山东煤田物测队 杨奎     

M_1SS—3 A型声速测井仪

声速测井在国内外油田和国外煤田勘探中已得到普遍应用,成为测井进行定性定量解释不可缺少的主要方法之一。 六十年代初,我国的煤田测井工作者曾对声速测井方法与仪器进行过研究和试验,由于种种原因,未取得成效。近年来,湖北125队和陕西131队以及辽宁103、155队等单位,在研制和引用声速测井仪器方面做了大量艰苦细致的工作,积累了一定的经验。两     

超声成像测井法在煤田地质勘探中的应用

超声成像测井法是近几年在煤田勘探中新开展的一种测井方法。本文简要地介绍了该方法的原理和仪器。从几十个钻孔的实际资料中,选择有代表性的图像和曲线,说明该方法在应用于煤田勘探时,除具备有其他测井方法的功能外,在解释岩层中的节理、层理、裂隙等小型构造现象、煤层中间的结核和顶底板的变形等地质现象方面具有特殊的功能。本文还介绍了直接从超声图像上计算地层倾角和倾向的原理和方法,这与其他常规地层倾角测井方法不相同。该方法计算简要、精度高。     

数字测井在鱼卡煤田地质勘探中的应用

数字测井技术是煤田地质勘探的一项新技术,它不仅适用于煤田勘探,同时也适用于石油、非金属、工程及水文地质勘探等领域。本文通过实测资料简便地介绍了数字测井的基本机理及其所取得的地质效果。     

The terrestrial fauna of the Late Triassic Pant-y-ffynnon Quarry fissures,South Wales,UK and a new species of Clevosaurus (Lepidosauria: Rhynchocephalia)

Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco.     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.     

The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts

The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H₂O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H₂O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ₁ roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003).     

HYDROGEOLOGY

正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level     

METAMORPHIC PETROLOGY

正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7),     

SERIALS

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GEOPHYSICAL EXPLORATION

正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci-     

QUATERNARY GEOLOGY & GEOMORPHOLOGY

正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli-     

PETROLEUM GEOLOGY

正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.)