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1.
中国矿产地质志省级“矿产地质图”和“成矿规律图”的编图思路和编图方法 总被引：2，自引：0，他引：2
中国矿产地质志省级"矿产地质图"和"成矿规律图/成矿系列图"的研编是"中国矿产地质志"研编的"文、图、库、普"四项内容之一,要体现"全覆盖"的182种矿种、18种矿床类型和多个"亚类型"、5个级别的矿产地规模、多个成矿时代的综合图例设计,要兼顾矿床成矿系列的表示方法、地质底图和构造底图优化等诸多方面,是一项复杂的"系统工程"。"编图技术要求"的制定,要本着"大道至简"的哲理、"大美至简"的审美观、"出精品"的宗旨、"编出上乘图件"的要求,提出"删繁就简构造底图,领异标新成矿系列"的编图原则。本文介绍了两图的性质、编图的思路和编图方法,并重点阐述"矿产图例设计"和"底图编制"两部分内容,以期编制出高水平图件,更集中反映和彰显项目成果。 相似文献
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3.
G. Monseur 《Mineralium Deposita》1977,12(3):331-352
A first synthesis on the Cambrian mineral deposits of Spain (uneconomic and economic deposits) is presented taking the most significant geological characteristics into account towards an understanding of the metallogenic processes. The examination of features and genetic interpretations proposed by different authors lead to a synthetic table including: the stratigraphic, geographic and lithologic location of the minerals, the processes (plutonic, volcanic, metamorphic, tectonic, paleogeographic) which have controlled the formation of the deposits, the types of mineral deposits, and their paragenesis. At the end of the study, tentative comparisons are made between a few Cambrian ore deposits of Spain, France and Sardinia. This comparisons will serve as a starting point for a joint project. 相似文献
4.
F. P. Agterberg 《Mathematical Geosciences》1974,6(4):373-395
Various statistical methods for predicting mineral potential from geological maps are reviewed. It is pointed out that, if the features are coded in more detail for relatively small cells, several new problems arise because of the dichotomous nature of the resulting variables. The objective of this paper is to present a method for the automatic contouring of both discovered and undiscovered deposits of a given type in terms of the geological framework. It is based on the assumption that the probability of occurrence of a deposit is fully determined by a combination of functions of the mappable geological attributes in a region. Application of the logistic model is proposed for the situation in which relatively few deposits of a given type are known to exist in the study region. 相似文献
5.
近年来经济的快速发展导致铅锌矿产资源需求大量增加,使得我国的铅锌资源储备形势依然严峻。基于此,在全国开展铅锌矿产资源潜力评价工作,通过总结铅锌矿地质矿产成果,掌握铅锌矿产资源现状,预测未查明的铅锌矿产资源潜力,能够更好地满足未来铅锌矿产资源规划部署及合理利用的需要。在系统梳理全国29个省级行政单位铅锌矿产资源潜力评价成果的基础上,总结中国铅锌矿时空分布规律特征,结合传统的矿床模型以及全国重要矿产预测类型划分方案划分了铅锌矿矿产预测类型,将全国铅锌矿划分为9类矿产预测类型,分别是层控碳酸盐岩型（MVT）、碳酸盐岩细碎屑岩型（SEDEX）、砂砾岩型、沉积改造型、陆相火山岩型、海相火山岩型、岩浆热液型、夕卡岩型和风化壳型;分析了重要成矿区带的铅锌矿矿产预测类型、成矿时代,总结了各成矿区带主要类型铅锌矿区域预测要素,建立了主要类型铅锌矿区域预测模型。结合全国大地构造相图、全国成矿区带图以及全国各级预测区分布图等资料,划分了15个铅锌矿成矿省和47个Ⅲ级成矿区带,以成矿省(成矿区带)为主线开展矿产资源潜力评价和预测工作,为勘查部署提供依据。 相似文献
6.
矿床地质学的发展前景和思维方法 总被引：16，自引：4，他引：12
矿床地质学正面临着为社会提供充足的能源和资源的严重挑战。新时期的矿床学将朝着整体化和综合化的方向发展,将研究和发现多种新型的矿产资源和新的矿床类型,以满足日益增长的人类物质文明和精神文明的需要。本文提出广义的矿产资源的概念;主张根据矿床地质学的特点,改善矿床学研究的思维方法,主要是：①坚持实践第一,尤其是野外实践;②建立系统观念;③加强成矿历史分析;④提高经济意识,研究矿业经济趋势;⑤发展创造思维,以期取得成矿理论的突破进展,建立新的矿产资源地质学知识体系。 相似文献
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地质图形的显示是油藏描述中的一项重要的计算机技术,也是当前实现地质工作数字化,提高生产效率和地质工作研究水平的重要途径。油藏描述中常见地质图形有:各种平面等值线图、立体图、油层连通图、柱状图、油藏剖面图等,本文介绍在计算上绘制这几种地质图形的原理和方法。 相似文献
9.
依靠科技进步寻找超大型铀矿床：中国铀矿资源勘查工作跨世纪的目标 总被引：1，自引：0，他引：1
中国铀矿资源勘查工作经过３０多年的发展，在全国２３个省（区）探明了１０余种工业类型的铀矿床，提交了一大批铀矿夜里量，对中国核工业的发展提供了资源保障，但是，中国铀矿探明储量所呈现的矿床和矿体规模较小，矿石品位偏低等特点，给经济的开采利用这些铀矿资源带来了一系列的问题，寻找大型铀矿床，是从根本上解决铀矿资源对中国核工业长远发展的需求保证，改善中国铀矿资源开采经济效益的重要途径，也是铀矿地质勘查工作上 相似文献
10.
北山是我国西北重要的成矿带，该成矿带矿种丰富，矿床类型多样，矿床规模大，具有重要的经济价值和科学研究意义。本文在系统总结北山成矿带区域地质背景、主要金属矿床类型以及代表性矿床成矿地质特征的基础上，较为全面地综述了北山地区近年来找矿勘查的新成果。在矿种和矿床类型方面，提出铜、铁、金、铅锌等是有潜力的矿种及岩浆型、斑岩型、喷流- 沉积型、陆相火山- 次火山热液型等为优势矿床类型；在成矿时代上，提出除华力西期外，还应加强印支期、燕山期等成矿时代矿床的找矿工作；在找矿思路上，提出将找大型以上规模矿床、找高经济效益矿床作为北山地区找矿工作的重中之重，就矿找矿、攻深找盲是北山地区重要的找矿方向。 相似文献
11.
Porphyry copper potential mapping using the weights of evidence model in a GIS,northern Shahr e Babak,Iran 总被引：1，自引：0，他引：1
A variety of spatial geological data were compiled, evaluated and integrated to produce a potential map for porphyry copper deposits in the northern Shahr e Babak, Iran, within a total area of approximately 408 km2. Remotely sensed data including LANDSAT Thematic Mapper were used to create the hydrothermal alteration haloes around intrusive bodies. Geological data, such as exposed granitic to intermediate intrusions, and part of the lineaments were extracted from available geological maps. Aeromagnetic data were also used to extract magnetic anomalies and extra lineaments. The Conditional Independence test was carried out on five binary maps representing diagnostic deposit recognition criteria, and four of them were then integrated using a weights of evidence model. The procedure generated a posterior probability map identifying favourable areas for porphyry copper deposits. The final map highlights the most important known copper deposits in high favourability domains. Some new target areas are also located in the favourability map and warrant further investigation. 相似文献
12.
通过使用"探矿者"软件,建立了湖南黄沙坪多金属矿床局部综合信息三维找矿模型。在收集和整理研究区的地质图、地形图、地质剖面图、钻孔柱状图的基础上提取钻孔数据,建立地质空间数据库。通过分析矿床控矿条件,构建主要控矿地质体的三维数字模型,实现局部综合信息找矿模型的三维数字化。从矿体模型中,可以直观地观察矿区内矿体的产状和空间分布特征。地层模型和石英斑岩-矽卡岩岩体模型比较准确地展示了主要赋矿地层和石英斑岩-矽卡岩岩体对铅、锌和钼矿体的控制作用,从而证实了该软件具有较全面的功能及建模方法的有效性,为矿床进一步的勘查预测工作提供了依据。 相似文献
13.
B. N. Piskunov 《Russian Journal of Pacific Geology》2007,1(1):22-28
A petrochemical database newly developed for magmatic rocks from the Kurile island arc includes more than 2000 analyses, which were compiled from the literature, geological reports, and were made available for the author via personal communications. The database is developed on the basis of Microsoft Access (a Microsoft Office 97 application) for Windows 95 and consists of five tables. The main table initially comprises 22 columns and 2354 rows and can be unrestrictedly augmented by the user with newly obtained data. The database contains information on the location sof sampling sites, depth facies of the rocks, references, major-element compositions, etc. Examples illustrate the application of the database to the solution of geological problems: typifying the intrusive massifs of the Kurile island arc, assessment of the possible resources of Re mineralization at caldera volcanoes, and elucidation of the nature of the basaltic volcanism of the island arc. 相似文献
14.
应用多光谱ASTER数据对ETM遥感异常的定性判别研究——以东昆仑五龙沟为例 总被引：5，自引：0，他引：5
文中讨论了新的找矿参数——蚀变遥感异常的地质基础和光谱前提,在矿床地质学和蚀变矿物光谱参数特征的基础上,编制了一张用于遥感异常提取及对其地质解释的表格。ETM遥感异常提取技术已在全国推广,ASTER数据可以在三个方面对已推广的ETM起到重要的补充作用：1.利用短波红外增设的波段,对某些矿致异常区分其矿化（矿床）类型;2.利用增设的热红外波段区分某些岩性;3.可有助于解决ETM因第7波段太宽而产生的许多疑难问题。本文以东昆仑五龙沟为例讨论了ASTER对于解决ETM遥感异常性质判别困难方面的作用。 相似文献
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矿床的形成受制于多种复杂的地质作用,包括全球尺度的板块构造运动、岩浆活动、变质沉积改造等过程,并普遍伴随热液活动、流体迁移、水-岩相互作用、元素分异及同位素分馏等一系列局部区域地质和地球化学过程.在过去的矿床学研究中,地球化学方法主要围绕在主、微量元素和传统的稳定同位素等手段,解决了很多矿床成因问题.但仍存在不少的多解和难解问题,比如许多矿床在矿化类型、蚀变分带与金属矿物组合方面具有诸多相似之处,常规地球化学指标难以区分.随着测试精度的提高和自然储库组成的完善,Li同位素近些年来已成为新兴的稳定同位素体系.Li同位素在自然界过程中高达80‰的同位素分馏使其具有更好的辨识能力,同时兼有直接和间接指示作用,有潜力成为研究各种复杂成矿过程的良好示踪剂.本文总结了近年来有关矿床学中Li同位素的研究和应用进展,以俯冲带成矿为主,阐述了斑岩型-热液矿床、伟晶岩型矿床和沉积矿床等类型矿床的Li同位素地球化学特征,并探究新的Li同位素方法在矿床中的应用前景.基于Li同位素体系在各类矿床的应用实例,我们认为Li同位素体系将为矿床学研究提供更多的指示信息和依据. 相似文献
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内波、内潮汐沉积和复合流沉积是二十余年来在古代深水环境中新发现的一种具牵引流性质的沉积相类型,由于地层沉积记录十分有限,制约了深水底流沉积的沉积学研究。大比例尺实测地质剖面和精细露头测量表明,底流沉积发育于凭祥盆地深水沉积之中,通过对其沉积构造精细剖析和古水流测量,识别出内波、内潮汐沉积和复合流沉积,其中内波、内潮汐沉积以双向交错层理、单向交错层理、透镜状层理为特征,复合流沉积以复合流层理、丘状交错层理和较陡的爬升波纹层理为特征,进一步表明存在浊流和底流的交互作用,为古代地层中的深水底流沉积提供了又一研究实例。 相似文献
17.
Coupling of remote sensing data aided with field investigations for geological hazards assessment in Jazan area,Kingdom of Saudi Arabia 总被引：5，自引：2，他引：3
Ahmed M. Youssef Biswajeet Pradhan Abdullah A. Sabtan Hassan M. El-Harbi 《Environmental Earth Sciences》2012,65(1):119-130
The city of Jazan is situated on the eastern flank of the Read Sea and considered as one of the fastest growing cities in
the Kingdom of Saudi Arabia. This zone attracts a lot of investors for various development projects. Recently, many new projects
have been implemented and constructed in this region including new urban areas, infrastructures, and industrial projects.
However, historically this area has been challenged from different types of geological hazards. These geological hazards are
catastrophic events that can cause human injury, loss of life, and economic devastation. The current study is aimed at evaluating
the different types of geological hazards in Jazan city. This study is based on interpretation of satellite data such as LANDSAT
and QuickBird images, existing geological maps, and physiographical characteristics with the help of field and laboratory
analyses. The results of the analysis indicate that there exist various types of geological hazards in the study area mostly
related to the natural factors which include (1) Sabkha soil; (2) Salt dome; (3) Loess soil; and (4) Sand dune/drift. Further,
the findings of this study revealed that, most of these geological hazards have a severe impact on the ongoing development
activities in Jazan area. 相似文献
18.
随着经济社会的发展和科学技术的进步,以及地质工作服务领域的空前扩展,地质图件作为地质工作成果的集中体现和地质工作服务于经济社会发展的主要工具,受到各国政府及国际地质组织的高度重视,并出现一些明显的特点和发展趋势,主要表现为:由专业性地质图件向更多实用性图件发展;由单一地质类图件向多学科系列图件发展;由地区性、国家级图件向洲际性及全球性图件扩展;由地表地质图件向反映深部地壳结构构造图件发展;并在图面结构、表现形式上进行了诸多改革,提供了更多地质信息。 相似文献
19.
Manal Shakir Al-Kubaisi 《Arabian Journal of Geosciences》2014,7(3):1001-1015
Distinctive landform of juxtaposition of relatively straight exposures of slope and Quaternary deposits against older rock units in addition to the omission of younger ones are recognized in the Zagros low-folded zone of Mosul area. This phenomenon is attributed to the kinetics and the geometry of basin inversion. Positively inverted faults and their associated folds developed up-growing structures with reverse fault scarps. Those growing structures are passively uplifted above lower blind thrust fault. The up-moving faults were subjected to erosion. The interaction between the rates of erosion and uplift controls the formation of slope and other Quaternary deposits and their distribution. Fast uplift of the reverse faults resulted into formation of cliffs representing the fault scarps and the formation of slope deposits directly next to them. The linear traces of the reverse faults control the straight linear map view distribution of the associated slope deposits. Slower rates of uplift give considerable time to erosion and in consequence the fault scarps are deeply eroded and disappear. This process also resulted into deposition of the other types of Quaternary deposits but still the linear contact between the geological rock units and the Quaternary deposits is existing and easily noticed. The analysis of these features and their interpretation has resulted in a new interpretation of the geological maps of Mosul area and the recognition of many reverse faults that bound the exposed structures. This fault system is used to restore the configuration of the original Late Cretaceous extensional basin. 相似文献