JGS-1B型综合测井仪在冀东铁矿勘查中的应用

JGS-1B型综合测井仪可进行磁三分量测井、工程测井、水文测井及煤田测井，本文主要介绍了该仪器在铁矿勘查中的实际应用。     

HD-4002型综合测井仪伽马总量测井探管研制

介绍了伽马总量测井探管的工作原理、研制方案、电子电路设计、校准方法等。研制了HD-4002型综合测井仪的伽马总量测井探管,测量范围:(0~5)%e U;准确性:在(0.01~5)%e U范围内测量误差≤±5%;灵敏度:约为295(0.01%e U·s)-1;铀含量灵敏度系数:(30.1±0.8)n C/(kg·h·0.01%e U),可用于铀含量的定量测量。所研制的伽马总量测井探管性能稳定、可靠,灵敏度高,符合铀矿地质行业伽马测井规范的要求,并已应用于铀矿勘查测井工作中。     

地下物探方法及其应用

地下物探是地球物理方法在钻孔和坑道中应用的总称。在钻孔中按其工作方式和探测范围的不同，又可分测井和井中物探两大类。测井的探测范围为几厘米至几十厘米级，主要用来解决井壁地质问题。地质矿产部的测井工作已有卅年历史，目前已能基本满足地质勘探的需要。●在测井仪器装备方面，除原有的JDC—2型（上海地质仪器厂造）和JBC—2型（重庆地质仪器厂造）轻便全自动测井系统外，近年，还由上海地质仪器厂生产了JH—1型综合测井站，使仪器装备实现了车装、配套，小口径化（井下仪直径一般不大于40毫米）。它们适用于煤田、铀矿、水文、     

著名物探专家来华讲学

(一) 应核工业北京地质研究院邀请,俄罗斯共和国著名物探专家A.C.谢雷赫于1992年12月11日来华讲学,历时1个月。A.C.谢雷赫是中国人民的老朋友,早在50年代就在我国初建的航测队(湖南、江西等)工作过。他讲学的主要题目有:铀矿勘查中的物探科研工作;铀矿床的普查分类;物探方法有效评价;主要铀矿类型(内生矿床、层状氧化带矿床、高品位富矿等)的物理-地质模式;测井工作方法和仪器;放射性方法勘查非放射性矿,     

N451型伽玛能谱测井探管的研制与铀钍伽玛能谱测井技术研究

为准确测定铀钍混合型矿床中矿层的铀、钍含量,研制了 N451型伽玛能谱测井探管,并将该探管配接在 HD 4002B轻型综合测井系统上组成了伽玛能谱测井系统.基于该系统,建立了伽玛能谱测井仪的校正方法、伽玛能谱测井的数据处理方法和野外测井工作方法.N451型伽玛能谱测井探管具有探测效率高、自动稳谱系统抗辐射能力强的特点,在铀矿勘查中连续测定钻孔中矿层的U、Th含量,效果良好.     

铀矿测井资料处理解释系统研发

通过铀矿测井资料处理解释系统的研发,实现了从测井曲线计算处理、岩性识别、孔隙度预测、γ测井解释、测斜数据处理到仪器校准核查、物探参数计算、成果输出等铀矿测井资料处理全过程的数字化。系统既适用于地浸砂岩型铀矿又适用于硬岩型铀矿的测井数据处理解释,并且对《γ测井规范》和《地浸砂岩型铀矿地球物理测井规范》提供了充分的支持。系统通过了模型测试和实际应用测试,在一致性、准确性、实用性上均达到了规范的要求,效果良好。     

闪烁γ自动测井和综合测井在川北砂岩地区的应用

闪烁γ自动测井和综合测井在油田和煤田地质勘探中获得了广泛应用,但在铀矿地质勘探中应用的还比较少。随着铀矿地质勘探工作的发展和对铀矿化成矿规律综合研究的深入,特别是随着无岩芯和小口径钻探的推广,必须变目前单一的γ测井为多物性参数的综合测井,扩大研究的思路和范围,同时把测量方式由点测过渡到全自动连续记录。我们以小型的JBC-2型轻便自动测井仪为基础,在川北砂岩地区开展了闪烁γ自动测井和综合测井的试验工作;并对外单位的先进测井技术、轻型组合测井仪、超声成相测井仪和     

“全国砂岩型铀矿远景调查工作部署研讨会”报道

中国地质调查局天津地质调查中心于2013年9月3-4日在天津召开了“全国砂岩型铀矿远景调查工作部署研讨会”,天津地质调查中心主任金若时和中国地质调查局资源部主任薛迎喜主持会议,国土资源部副部长汪民,天津市副市长尹海林,中国科学院、中国工程院多位院士,中国地质调查局相关领导,多位知名学者和来自全国各地60余家铀矿科研、勘查单位的代表出席了会议。会议全面总结了铀矿勘查战略选区工作进展及找矿阶段成果,研究部署了下一步全国砂岩型铀矿的勘查工作。     

浅论勘查砂岩型铀矿的物化探方法

本文简要介绍了国内外勘查砂岩型铀矿的主要物化探方法的应用概况 ;根据赋存砂岩型铀矿的地质背景 ,提出了若干适于勘查砂岩型铀矿的物化探方法 ,论述了这些物化探方法的原理、特点及其所适用的铀矿勘查阶段 ,同时列举了部分找矿实例。地质科研生产实践表明 ,因地制宜地选用和合理配置高效的物化探方法是成功寻找砂岩型铀矿的关键之一。     

小口径砂岩型铀矿测井资料处理解释系统设计

针对目前砂岩型铀矿测井资料处理解释软件的缺陷以及地质精细化解释的需求,设计了一套适合砂岩型铀矿地球物理测井资料处理与解释的软件。软件设计有钻孔数据管理、测井资料预处理、地层参数计算、地层岩性识别、定量γ解译、测斜数据处理、单孔综合解释和多孔分析等模块和功能。软件在纵向上能识别岩性、划分地层以及分析沉积环境等,在横向上能查明砂、泥岩地层的展布情况,为砂岩型铀矿预测和勘查提供技术支撑。     

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.     

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

正~~     

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.)     

GEOCHEMISTRY

正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861     

ENGINEERING GEOLOGY

正20141768 An Shaopeng(Institute of Rock and Soil Mechannics,Chinese Academy of Sciences,Wuhan 430071,China);Wei Lide Experimental Study on Mechanical Behavior of Xigeda Formation Siltstone and Structure Interface(Journal of Engineering Geology,ISSN1004-9665,CN11-3249/P,21(5),2013,p.702-708,9illus.,1 table,16 refs.)