制定《滨海砂矿地质勘查规范》的意义及关键问题

<正>国土资源部、中国地质调查局自"十五"以来在区域地质调查、矿产资源评价、水工环地质、海洋地质、地球物理勘查、地球化学勘查、实验技术方法和资料信息等多个专业研制和修订了地质调查标准,这些标准都是目前地质调查工作急需的规范、规程和技术要求。2013年启动了《滨海砂矿地质勘查规范》(下称规范)的编制工作,标志着我国滨海砂矿地质勘查工作进入有规可     

中国地质学会2004年学术活动计划

《固体矿产勘查规范及其改革》研讨会:①矿产地质勘查规范在矿产资源勘查中的地位与作用;②我国矿产地质勘查规范体系的建立;③修订后的固体矿产地质勘查规范特点。目的:通过学术研讨,进一步宣传贯彻矿产勘查规范及     

论推断资源量(333)和预测资源量(334)的地质可靠程度

根据作者对GB/T17766-1999<固体矿产资源/储量分类>和GB/T13908-2002<固体矿产地质勘查规范准则>的理解和多年来执行上述标准情况的体会,针对目前在界定推断资源量(333)和预测资源量(334)的工程控制程度方面普遍存在的做法提出了探讨意见.附带建议在矿产工业指标中取消最低工业品位和矿床平均品位以与上述两个新标准接轨.     

矿产资源评价图件的编制

矿产勘查的各个阶段都要编制相应类别的图件.固体矿产预查和普查阶段编制各类图件更为重要,是更高阶段勘查工作的基础.“图件”是矿产勘查工作中描述地质现象,反映矿产勘查成果的方法和共同的语言,是综合矿产勘查不同方法手段获取的实际资料的表达方式.矿产勘查图件可以表达矿床(体)地质实际,多种勘查手段获取的成果、化验测试的数     

中国有色集团

正中国有色桂林矿产地质研究院有限公司矿产地质研究所矿产地质研究所是中国有色桂林矿产地质研究院有限公司从事地质找矿科研与勘查工作的主体机构,曾获得1项国家科技进步特等奖。目前拥有的地质勘查及与地质勘查相关资质证书有:固体矿产勘查甲级;地球物理勘查甲级:地球化学勘查甲级;地质实验测试(岩矿测试、选冶试验)甲级资质证书和水文地质;工程地质、环境地质调查乙级;地质钻探乙级、地质实验测试(岩矿鉴定)乙级资质证书。所有质量管理体系均已     

四川省冶金地质勘查院

四川省冶金地质勘查院成立于1978年。原名冶金工业部西南地质勘查局科学研究所、西南冶金矿产勘查开发院：2001年属地化后更名为四川省冶金地质勘查院,为省属事业单位。四川省冶金地质勘查院主要在川、滇、藏地区开展金属、非金属矿产资源的成矿规律研究、资源评价、矿产勘查、矿产利用可行性研究等工作。拥有固体矿产勘查、岩矿测试、     

战略性关键矿产勘查现状与对策：以青海省为例

关键矿产是指当前和未来相当长时间内现代社会可持续发展所必需、但在稳定供给方面存在高风险的战略性资源,主要包括稀土、稀有、稀散金属等“三稀矿产”,铬、锰、钛、钴、镍、钒等其他战略性金属矿产,以及晶质石墨、萤石、滑石、硼等战略性非金属矿产.青海省的关键矿产种类丰富,矿床成因类型多样,资源潜力大.未来要聚焦关键金属元素超常富集基础地质理论研究和找矿勘查实践,加强青海省关键矿产成矿条件、成矿规律、关键金属元素的地球化学行为和元素超常富集机制等方面的研究,查明关键金属元素赋存状态,提高关键矿产资源利用率,减少环境污染,提升矿产资源勘查开发利用水平.立足国际国内关键矿产资源形势,以青海省为例提出了全面提升对战略性矿产的管理、勘查、开发和综合利用水平及保障矿产资源安全的思考和建议.     

彻头彻尾错误的卤水勘查规范——答李博昀教授等

卤水勘查规范编写组李博昀等6人撰文“试论现行盐湖卤水矿勘查规范的适用性——兼与钱学溥先生商榷”(李博昀等, 2023), 认为,“现行卤水勘查规范,总体是一部适用的规范,没有发现大的问题”。然而,笔者认为,规范编写组把卤水视为固体矿产,要求依照固体矿产勘查的方法,按工程网度施工几十个、几百个地质孔以确定卤水的地质储量,是极端错误的。执行现行卤水勘查规范,造成了重大的经济损失,扼杀了深层卤水的开发。目前,这个彻头彻尾错误的规范,迫切需要进行修订。笔者提出了一个《卤水矿产地质勘查纲要》,供修订该规范参考。     

彻头彻尾错误的卤水勘查规范——答李博昀教授等

卤水勘查规范编写组李博昀等6人撰文“试论现行盐湖卤水矿勘查规范的适用性——兼与钱学溥先生商榷”(李博昀等, 2023), 认为,“现行卤水勘查规范,总体是一部适用的规范,没有发现大的问题”。然而,笔者认为,规范编写组把卤水视为固体矿产,要求依照固体矿产勘查的方法,按工程网度施工几十个、几百个地质孔以确定卤水的地质储量,是极端错误的。执行现行卤水勘查规范,造成了重大的经济损失,扼杀了深层卤水的开发。目前,这个彻头彻尾错误的规范,迫切需要进行修订。本人提出了一个《卤水矿产地质勘查纲要》,供修订该规范参考。     

《固体矿产地质勘查规范总则》常见问题分析

《固体矿产地质勘查规范总则》是各分矿种地质勘查规范的纲领性规范,在指导各分矿种勘查规范的制订、修订,指导全国地质勘查单位开展工作,评价固体矿产资源储量等方面都发挥了重要作用。近年来随着地质勘查工作的深入,在该规范执行过程中也遇见了一些问题。针对《固体矿产地质勘查规范总则》执行过程中存在的问题,提出了相关的建议,认为应尽快立项并启动该总则及各分矿种勘查规范的修订工作,从规范上、制度上为矿政管理工作提供根本保障。     

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.     

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.)     

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