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望谟县包树地区成矿地质条件优越,已有资料显示,存在寻找萤石等重要矿产的潜力。为了推进区内萤石矿的找矿工作,为下一步找矿提供找矿靶区,本文通过大比例尺地质填图、剖面测量、槽探、物探、钻探等手段,在区内发现了两套构造蚀变体(SBT),圈定了13个萤石矿体。初步查明了这些矿体的分布范围、赋存状态、规模、数量及其变化规律,估算了潜在资源。结合对区内萤石矿成矿地质条件和成矿规律的分析,圈定了望谟打岩萤石矿找矿远景区、望谟新屯萤石矿找矿远景区及望谟石屯萤石矿找矿远景区三处成矿远景区。应用固体矿产预测方法,建立预测模型对这些远景区的萤石矿资源进行预测,得出:望谟打岩萤石矿找矿远景区存在潜在萤石矿资源,具有较大的资源潜力;望谟新屯萤石矿找矿远景区存在潜在萤石矿资源,具有较大的资源潜力;望谟石屯萤石矿找矿远景区,成矿概率为≤01,具有成矿的基本条件,资源潜力较小。 相似文献
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近日,在全国危机矿山接替资源找矿专项工作总结会上,河南省地矿局地调一队等8家单位荣膺“全国危机矿山接替资源找矿特别贡献单位”称号。危机矿山接替资源找矿工作2004年国务院批准实施以来,全国危机矿山接替资源找矿专项工作获得了突出成果,新增一大批资源储量,理论和方法技术不断创新,有效缓解了矿山危机,综合效益十分显著。 相似文献
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《地质通报》2020,(8)
中国经济社会发展与资源环境约束的矛盾日益突出,走向深部,向深部要资源,是矿产勘查的必然趋势。在论述深部找矿的重要性、必要性基础上,阐述了深部找矿的基本概念,总结了深部找矿的现状,梳理了深部找矿的难点,提出了"从成矿作用本质研究深部找矿问题,研究成矿地质体确定找矿方向,研究成矿构造和成矿结构面预测矿体位置,研究成矿作用特征标志提供预测依据,综合地质的、物探的、化探的、钻探的技术手段探测深部矿体,以间接找矿为主,直接找矿为辅"的深部找矿思路及方法,并对加强深部找矿工作提出了充分发挥理论指导找矿作用,创新、研发、推广适合中国特色的深部找矿技术,充分利用大数据等现代信息技术等建议。 相似文献
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辽宁抚顺地区太古宙变质上壳岩成矿特征及找矿方向 总被引：1，自引：1，他引：0
辽宁抚顺地区太古宙变质上壳岩中铜、金、铁等金属矿产资源丰富.通过对老矿区的侧、深部找矿及近外围找矿,相继发现了红透山深部铜矿,二道沟、萝卜坎、大东洲大型隐伏铁矿,下营子钼、金、多金属矿等.对抚顺地区变质上壳岩成矿地质背景、成矿特征、空间分布及近年勘查成果的综合分析,应用地质找矿新理论,采用可控源、瞬变电磁、高精磁等物探方法对老矿区开展资源潜力预测及找矿方向评价,并取得了较好的找矿成果,显示该区具有巨大的资源潜力与找矿前景. 相似文献
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山东金矿找矿突破进展与前景 总被引：5，自引：0，他引：5
本文在前人工作基础上,综合近年来山东国土、地矿、黄金、冶勘、核工业、武警等行业取得的找矿科研成果,详细介绍了山东省金矿床的成矿地质背景和地质特征,系统总结了近年来山东省金矿在找矿突破、成矿规律及找矿方法方面的主要进展,并初步指明了山东省金矿下一步的找矿远景和找矿方向。作为国内外知名的金矿大省,山东省金资源储量和产量均居全国第一位。在找矿突破方面,胶东地区自2011年找矿突破战略行动实施以来,在三山岛、焦家和招平等重要金矿带连续实现找矿重大突破,新增资源量2500余吨,累计查明资源储量已达4500多吨。近年来,在鲁西地区归来庄矿田隐爆角砾岩型金矿深部600米以下发现矿体,预计新增资源储量超过20吨,归来庄金矿将成为鲁西资源量大于50吨的唯一特大型金矿床,也显示着该矿田具有广阔的深部找矿前景。在成矿作用研究方面,针对成矿作用机制、成矿模式及矿床类型等不同方面,地质学家们也提出了诸多理论学说。这些理论学说对促进山东金矿找矿突破发挥了重要的指导作用,进一步推动了山东金矿理论创新和找矿实践。在勘查技术方面,也由早期的常规方法技术,发展为现今的高精度、大探测深度找矿方法技术。 相似文献
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抚顺—清原地区是辽宁省最重要的铜矿产地,但近年来资源量急剧减少,开展铜矿资源进一步找矿工作已十分紧迫。文章依托"辽宁省铜矿资源潜力评价"和"辽宁省矿产地质志"项目所收集到的地、物、化、遥、自然重砂等资料,在建立红透山式铜矿找矿模型、提取证据因子的基础上,应用MRAS软件的证据权重模型模块对抚顺—清原地区红透山式铜矿进行矿产预测。共圈定找矿远景区10个,以计算得到的后验概率(P)将其划分为Ⅰ级找矿远景区4个、Ⅱ级找矿远景区3个、Ⅲ级找矿远景区3个;并利用找矿信息量预测等值线图和色块图对预测成果进行了表达。 相似文献
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A Mesoarchean greenstone belt (3.5–3.0 Ga) in the western part of the East Indian Shield comprising the Iron Ore Group of the Noamundi basin contains economic resources of both iron and manganese ores in the NNE plunging regional synclinorium. Manganese mineralization in the central and eastern parts of this synclinorium, particularly in Joda–Noamundi sector, has taken place in multiple cycles starting from syngenetic sedimentary and exhalative type through mobilization and remobilization in different stages of tectonism, deformation and hydrothermal activities to latest lateritic or supergene type. A relatively high temperature metamorphic jacobsite–hausmannite–bixbyite–braunite assemblage, low temperature hydrothermal pyrolusite–psilomelane–hollandite assemblage and supergene pyrolusite–manganomelane–groutite–polianite assemblage are present and were formed by recycling of manganese in different stages of mineralization. A detailed structural study of the manganese ore bodies as well as their ore petrographic and mineralogical characteristics with mineral chemistry has revealed systematic mineralization and their relation to deformational phases. Such recycling of manganese and its structural control of mineralization in different phases is unique of its kind in comparison with other Archean manganese deposits in the world. 相似文献
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The first data on the mineral composition and formation conditions of manganese ore at the Chapsordag and Malosyrsky deposits
in the Askiz ore district of Khakassia are integrated and systematized. The detailed mineralogical mapping of the deposits
has been carried out. The identification of minerals and examination of the ore microstructure were performed with optical
microscopy in transmitted and reflected light and using SEM/EDS, EMPA, XRD, IRS, and other methods. It was established that
the ore mineralization is spatially and genetically related to the Early Devonian magmatism and accompanying hydrothermal
activity and metasomatism. Syngenetic braunite was detected for the first time in elevated amounts reaching an economic level
in the devitrified groundmass of volcanic rocks, in cement of lava breccia, and in fragments in pyroclastic rocks. By analogy
with iron deposits, this magmatogenic type of manganese mineralization is regarded as ore lavas and tuffs combined with metasomatic
and hydrothermal mineral assemblages into a strata-bound orebearing complex and as a source of hydrothermal metasomatic ore.
The elevated Mn content in magmatic melts of the Early Devonian trachybasalt-trachyandesite-trachydacite association is caused
by assimilation of Riphean and Lower Cambrian high-Mn carbonate sequences in crustal magma chambers. In contours of economic
orebodies, the hydrothermal economic ore is recognized as sites of massive, patchy and impregnated, brecciated, stringer-disseminated,
and disseminated varieties. High-grade massive ore occurs as stratiform and branching bodies up to 1.5 m thick and a few tens
of meters long and as smaller pocketlike bodies. Braunite and pyrolusite (polianite) are major ore minerals varying in size,
degree of crystallinity, and character of intergrowths with associating minerals. Gangue minerals include carbonates, sulfates,
albite, quartz, chlorite, actinolite, piemontite, and okhotskite, a Mn-pumpellyite identified in Russia for the first time
and studied in detail in this paper. The veined hydrothermal ore is classified as a calcite-barite-pyrolusite type. The crystallization
temperature of hydrothermal metasomatic ore is estimated at 350–180°C; oxygen fugacity is above the hematite-magnetite buffer.
The surface of high-grade ore is encrusted with supergene goethite-hydrogoethite, chalcedony-hematite, and pyrolusite-psilomelane
crusts and veinlets (less than 1% of the bulk ore mass). The data obtained facilitate prospecting for high-quality manganese
ore at walls of superimposed rifts in fold regions, including large economic manganese concentrations in the form of ore lavas
and tuffs as products of solidification of metalliferous melt. 相似文献
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水资源承载力的研究进展与趋势展望 总被引：9，自引：1，他引：9
水资源承载力是水资源安全战略研究中的一个基础课题,是水资源安全的基本度量。它是涉及社会、资源和环境系统的一个指标,用来反映水资源系统对社会经济持续发展的支撑能力,是水资源研究领域和可持续发展研究领域中的一个重要课题。在实践领域中则是区域水资源开发利用对策研究的基本依据。因此,通过时区域水资源承载力的研究,可以更好地理解水资源系统对社会发展的支撑作用,认识人口、资源与环境协调发展的关系,更好地实现社会可持续发展。在分析和总结现有资料的基础上,对水资源承载力的概念内涵作了进一步的探讨,并对其量化方法和存在问题进行了论述,最后展望了水资源承载力研究趋势。 相似文献
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WANG Kui-feng 《地下水科学与工程》2016,4(2):120-130
Research on the carrying capacity and security of water resources is vital for its contribution to implementing sustainable development goals. The limitation of water resources is one of the most important factors that influence the sustainable utilization of resources. Studying the carrying capacity of water resources will not only facilitate monitoring and forecast of national resources and environmental carrying capacity, but also be valuable for building ecological civilization. According to the principles of evaluation system, the carrying capacity of water resources on Shandong peninsula is explored. A comprehensive evaluation model of the carrying capacity of water resources is constructed based on the carrying capacity of water resources index and the composite of water resources index. The results show that the capacity of water resources on Shandong peninsula is generally consistent with overexploitation, and that the development and utilization of water resources has reached a considerable scale under existing economic and technological conditions. The carrying capacity of water resources in this region is relatively small, and the contradiction between supply and demand of water resources is alarming. Relative countermeasures are put forward, to improve the water resources carrying capacity and to provide a basis for future sustainable development and utilization of water resources in this region. 相似文献
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现代水资源评价及水资源学学科体系研究 总被引：37，自引：0，他引：37
在追溯水资源界定和内涵历史沿革的基础上，根据水资源评价的有效性、可控性和可再生性准则，按不同评价口径将水资源划分为广义水资源、狭义水资源、国民经济可利用量和生态环境需水量。从水资源承载的双重客体出发，一定程度上澄清了历史上关于水资源评价和定义的争论。而后从水资源科学的发展入手，刻划了水资源学研究的对象和三个层面上的内容，即基础研究、应用研究和综合研究，根据学科研究的内容，构建了包括基础学科、应用学科和综合学科的水资源学学科体系，并分别就三大组成部分作了剖析，这对于水资源学科建设具有积极的意义。 相似文献
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针对榆林地区水资源相对贫乏,煤炭资源不合理的开采对地下水资源造成巨大破坏,严重威胁着该地区的可持续发展的问题,应用系统工程方法,将水资源放在社会、经济、资源、生态、环境所组成的复合系统中进行整体研究,构建地下地下水资源-生态环境-社会经济系统模型,可以为水资源的优化配置、开发利用规划、管理决策、落实最严格的水资源管理制度提供技术支撑。分析结果表明榆林地区在水资源、环境和经济目前处于不协调阶段,经济发展较快,但水资源相对贫乏,经济的发展对环境造成很大有破环并且对于环境的治理和保护投入的资金较少,采矿区水资源污染较为严重。 相似文献