矿产资源潜力评价的理论和GIS技术

矿产资源潜力评价是国土资源大调查提出的一项战略任务,它要求迅速查明我国各类矿产资源的潜力,为及时转化成经济优势准备基础资料,应用新的成矿理论开展重要矿种的作开展重要葡 成矿条件、成矿规律调查研究及区域的成矿预测评价构成了全国矿产资源潜力评价的三项基本任务。矿床定位,、相似类比和“求同求异”为潜力评价的三项指导理论：最小风险最大含矿率、优化评价、尺度水平对等为潜力评价固定资源潜力区遵循２的准则;在Ｇ     

中国矿产资源潜力评价集成数据库模型

提要：中国矿产资源潜力评价专项研究范围涵盖成矿地质背景、成矿规律、矿产预测、重力、磁测、化探、遥感、自然重砂等专业领域,已形成了海量成果,数据量达TB级。研制与实现中国矿产资源潜力评价集成数据库模型,用于集成和管理这个国家基础性数据资源,是一项极具挑战性的任务;是构建矿产资源潜力评价技术平台的基础工作,用以整合基础数据与高层应用、贯通省级-大区-全国层次以及支撑不同尺度规模矿产资源潜力评价常态化工作。对开展国家基础性数据资源建设有指导作用和实际意义。     

东天山斑岩铜矿资源潜力评价

在对东天山斑岩铜矿进行资源潜力评价的过程中,引进和吸收了国内外同行的研究成果,提出了成矿系列综合信息矿产资源潜力评价方法.该方法以成矿系列理论、成矿动力学理论以及综合信息矿产资源评价理论为依托,充分利用地质、地球物理、地球化学、卫星遥感等多元数据,将成矿作用与特定的成矿地质环境联系起来,结合综合信息在区域空间上的展布特点,开展不同矿化类型的成矿信息提取,最后使用GIS背景下开发的矿产资源评价系统(MRAS)圈定成矿靶区,预测资源潜力.作者在东天山地区运用此方法对斑岩铜矿进行了示范性预测,野外验证结果显示,预测效果较好,说明该方法具有推广使用的价值.     

中国菱镁矿成矿地质特征与资源潜力

国土资源部为了基本摸清全国重要矿产资源“家底”,为矿产资源保障能力和勘查部署决策提供依据,开展了全国重要矿产资源潜力评价项目。菱镁矿是开展的25个重要矿种之一。本项目的实施,是我国矿产资源方面的一次重要的国情调查。本次工作以成矿地质理论为指导,深入开展区域成矿规律研究;充分利用地质、物探、化探、遥感和矿产勘查等综合成矿信息,建立典型矿床预测模型和区域预测模型,圈定成矿远景区和找矿靶区;充分应用现代矿产资源预测评价的理论方法和GIS评价技术,逐个评价其成矿远景区资源潜力;用地质体积等多元信息方法估算了地下2 000 m以浅的菱镁矿资源量,为科学合理地规划和部署矿产勘查工作提供依据。中国菱镁矿主要成矿时代为古元古代,成矿类型以沉积变质型为主,全国共有累计查明资源储量（矿石量）36.42亿t,主要分布于辽宁、山东和新疆。全国共圈定菱镁矿最小预测区129个,获2 000 m以浅预测资源量（矿石量）131亿t。全面总结并建立了菱镁矿典型矿床预测模型及区域预测模型,共划分菱镁矿成矿区带11个。     

矿产资源潜力评价的若干问题

全国矿产资源潜力评价是国土资源大调查提出的一项战略任务。它的完成为发挥矿产资源的经济和社会效益,促进国民经济的可持续发展提供基础资料。 目前开展的“新一轮国土资源大调查”和进行“全国矿产资源潜力评价”是从这一目标出发     

《四川省煤炭赋存规律与资源预测》内容介绍

正"四川省矿产资源潜力评价"是国土资源厅近期开展的三项矿情调查之一,"四川省重要矿产和区域成矿规律研究"是该项矿情调查的重点工作,煤炭是该项工作选择开展全省成矿规律研究的18种重点矿种之一。本书在简要介绍四川省煤炭查明和开发资     

矿产资源潜力评价在我国的发展

无论是“矿产资源潜力评价”,还是“成矿预测”、“总量预测”、“成矿区划”,其目标、任务、采用的理论和方法、以及编制的图件都是相似的,都可纳入矿产资源潜力评价的范畴。矿产资源潜力评价是以成矿地质理论为依据,应用有关技术方法,在成矿地质条件有利地区对潜在矿     

全国重要矿产和区域成矿规律研究进展综述

对重要矿产开展全国性的资源潜力评价,是国情调查的重要组成部分,而开展重要矿产和区域成矿规律的研究,又是矿产资源潜力评价的基础性工作.自2006～2013年的8年间,通过对400多个典型矿床的野外调查,开展了典型矿床和区域成矿规律的全面研究,编制了成矿规律研究的技术要求,组织了全国性的技术培训,指导了大区和省级项目成矿规律研究工作,完成了大区和省级项目典型矿床和成矿规律研究成果的验收、汇总和综合,编制了全国单矿种(组)成矿规律相关专题图件,建立了相应的数据库,提出了一系列新认识、新技术和新方法,包括同位素定年的方法和成矿规律编图方法,为矿产资源潜力评价奠定了扎实了理论基础,有效地指导了潜力评价和地质找矿工作,培养了人才,锻炼了队伍,取得了良好的经济效益,显著地提升了我国成矿学的研究水平.     

怀化地区优势矿产资源及发展矿业的建议

怀化地区优势矿产资源及发展矿业的建议ＳｕｐｅｒｉｏｒＭｉｎｅｒａｌＲｅｓｏｕｒｃｅｓａｎｄＤｅｖｅｌｏｐｍｅｎｔＰｒｏｐｏｓａｌｏｆＭｉｎｉｎｇｉｎＨｕａｉｈｕａＡｒｅａ骆学全ＬｕｏＸｕｅｑｕａｎ地矿部湖南省地质矿产勘查开发局４０７队怀化４１８０００...     

矿床模型综合地质信息预测资源量的估算方法

未发现矿产资源潜力的资源定量估算一直是资源评价的重要工作,关于资源量估算的方法也在不断的探索中。从新一轮全国重要矿产资源潜力评价的技术体系所倡导的成矿分析方法入手,探索了资源量估算的成矿地质体体积法,介绍了该方法的原理、步骤和可能实现的途径。     

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