Unfilterable "geoaerosols", their use in the search for thermal, mineral and mineralized waters, and their possible influence on the origin of certain types of mineral waters     

B. Krcmár  T. Vylita 《Environmental Geology》2001,40(6):678-682

 Many articles describing the unusual mobility of solid particles in the subsurface layers of the Earth's crust have been published in the last decades, especially in the geological literature. In an attempt to explain this phenomenon, several hypotheses have been developed. The one closest to the behavior observed in nature is based on quantum mechanics. Based on this phenomenon, a new geological prospecting method called Molecular Form of Elements (MFE) was developed in former Czechoslovakia during the 1970s. It has been widely applied since for various types of prospecting, including the search for thermal and mineral waters. When using the MFE method for prospecting, the relationship between the ascending mineral springs and the four directions of structural faults was discovered. The possibility of whether a process, similar to the one acting during the absorption of elements when using the MFE method, can be a source of dissolved solid particles during the creation of mineral waters is also discussed. Received: 3 March 2000 · Accepted: 11 July 2000  相似文献   

武夷山稀有、贵金属矿带成矿特征及找矿方向   总被引：1，自引：2，他引：1  

曾晓建 《矿产与地质》2001,15(Z1):434-439

武夷山稀有、贵金属矿带受NE向构造岩浆岩带控制.稀有金属成矿的时空分布上显示出从早到晚期由南侧伟晶岩型往北部钠长石化花岗岩型的变化趋势,贵金属成矿由银(金)变为金银矿的演化.  相似文献   

粤西滨海第四纪稀土砂矿     

张仲英 《地理科学》1994,14(3):278-283

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The Rössing Uranium Deposit: a product of late-kinematic localization of uraniferous granites in the Central Zone of the Damara Orogen, Namibia     

I.J Basson  G Greenway   《Journal of African Earth Sciences》2004,38(5):259

The Rössing granite-hosted uranium deposit in the Central Zone of the Pan-African Damara Orogen, Namibia, is situated in the “SJ area” to the south of the Rössing Dome. The coincidence of a number of features in this area suggests that mineralization is closely linked to late-kinematic evolution of the Rössing Dome. These features include: (1) the rotation of the dome's long axis (trend of 017°), relative to the regional F₃ trend of 042°; (2) southward dome impingement, concomitant with dome rotation, producing a wedge-shaped zone of alkali-leucogranites, within which uranium mineralization is transgressive with respect to granites and their host lithologies; uranium mineralization and a high fluid flux are also confined to this arcuate zone to the south and south-east of the dome core and (3) fault modeling that indicates that the SJ area underwent late-D₃ to D₄ brittle–ductile deformation, producing a dense fault network that was exploited by leucogranites. Dome rotation and southward impingement occurred after a protracted period of transtensional tectonism in the Central Zone, from ca. 542 to 526 Ma, during which I- and S-type granites were initiated in a metamorphic core complex. Late-kinematic deformation involved a rejuvenation of the stresses that acted from ca. 600 to 550 Ma. This deformation overlapped with uranium-enriched granite intrusion in the Central Zone at 510 ± 3 Ma. Such late-kinematic, north–south transpression, which persisted into the post-kinematic cooling phase until at least 478 ± 4 Ma, was synchronous with left-lateral displacement along NNE-trending (“Welwitschia Trend”) shears in the vicinity of Rössing. Late-kinematic deformation, causing block rotation, overlying dome rotation and interaction of the more competent units of the Khan Formation with the Rössing Formation in the dome rim was pivotal in the localization of uranium-enriched granites within a highly fractured, high-strain zone that was also the site of prolonged/high fluid flux.  相似文献   

泥火山——天然气水合物存在的活证据   总被引：2，自引：0，他引：2  

沙志彬张光学  梁金强王宏斌 《南海地质研究》2005,(1):48-56

海底天然气水合物大多与通过切穿沉积盖层的断裂的上升烃类流体相关，这些高渗透带包括泥火山和底辟等侵入构造，所以泥火山、底辟和海底断裂等构造周围可能赋存水合物；实际钻探结果也证实，泥火山和水合物的形成与聚集有较为密切的关系。泥火山，它是地层内部圈闭气体由于压力释放上冲的结果，也是气体向上运移的通道。文章初步总结了泥火山与水合物的成矿关系，认为泥火山是水合物赋存的标志之一，是水合物存在的活证据。本文对我国泥火山与水合物的发育和赋存进行了分析预测，并对泥火山构造中水合物的成矿模式进行了初步探讨。  相似文献   

大兴安岭南段东麓中生代O型埃达克质火山岩及其成因、古构造环境和找矿意义   总被引：7，自引：1，他引：7  

张永北  孙世华毛骞 《岩石学报》2006,22(9):2289-2304

蒙东西拉禾伦河北侧查干木伦河流域,属中生代大兴安岭火山-侵入杂岩带南段。最近区内晚侏罗世满克头鄂博组陆相火山杂岩火山盾中,发现有埃达克质火山岩,与少量钠质流纹岩和玄武岩共生。埃达克岩 Al_2O_3>15%,MgO<3.4%,K_2O 平均=1.77%,Na_2O/K_2O>1,LREE 富集,HREE 及 LIRE 强烈亏损,无负铕异常,高 Sr(497.91～896.40×10~(-6)),低 Y(4.33～15.77<18×10~(-6)),低 Yb(0.35～1.54<1.9×10~(-6)),I_(Sr)=0.70374～0.70594,ε_(Nd)(t)为-0.45～ 6.58,在 K-Na-Ca、Rb-Sr-Ba、Sr/Y-Y 和 Sr/Yb-Yb 等图中属埃达克岩,具奥长花岗岩演化趋势,是典型的 O 型埃达克岩。其与共生岩石ε_(Nd)(t)、I_(Sr)与晚古生代玄武岩的接近,部分岩石 t_(DM)(677～845Ma)与晚古生代俯冲洋壳(t_(DM)=627～998Ma)相同,Sr-Nd 同位素及Zr/Hf-Nb/Ta 比值具有亏损地幔与下地壳混合特征,另有岩石(t_(DM)=343～453Ma)源于古生代年轻地幔。据此推论其源岩是以晚元古代俯冲洋壳为主,多源物质混合的增生地体下地壳。La_N/Yb_N-Yb_N 及 La/Sm-La 图证明埃达质岩浆是榴辉岩化源岩部分熔融的原始岩浆,钠质流纹岩是该原始岩浆分离结晶产物,玄武岩浆则可能是源岩深度熔融的结果。岩石成分及微量元素判别该火山活动环境是大陆边缘弧。大兴安岭地区在中生代出现埃达克质火山岩及该类火山弧,未必与环太平洋或者鄂霍茨克海俯冲构造直接相关,而是晚古生代古亚洲洋残存洋壳在中生代沿续存俯冲断裂继续向增生地体下地壳俯冲并发生部分熔融结果。区内与满克头鄂博组有关的铁、铜、金矿化,应有大矿前景。  相似文献   

遥感化探信息综合分析在地质找矿中的应用研究   总被引：12，自引：0，他引：12  

方洪宾  李志中 《国土资源遥感》1998,9(4):39-42

利用适当比例尺的遥感资料对新疆三区林场金化探异常进行了综合解译分析和评价,并圈定了多处金矿(化)体,在遥感与化探相结合进行地质找矿方面取得了明显效果。  相似文献   

云开地块基底演化与成矿作用   总被引：2，自引：0，他引：2  

王祖伟  周永章  张海华  周汉文 《华北地质》1998,21(1):0

云开地块位于广东和广西两省的毗邻地带,经历了基底形成和改造两个阶段。基底形成包括了古中元古代高州杂岩的沉积与变质、晚元古代云开群的沉积与变质、震旦系和早古生代地层的沉积和变质,在早古生代晚期作为整体转化为稳定地块。基底改造发生在加里东期之后,包括海西－印支期与燕山－喜山期两个阶段,基底岩石经历了断裂变质、重熔改造和构造活动。在基底演化过程中,物质进行了重新分布,一些元素得以富集成矿,使云开地区成为我国重要的银金-多金属矿床集中区。  相似文献   

郯庐深大断裂两侧主要矿产成矿特征研究   总被引：6，自引：0，他引：6  

涂怀奎 《矿产与地质》1997,11(5):309-313

郯城—庐江深大断裂构造演化控制着东西两侧主要矿产的产布规律。有其相同的矿种，相似的矿床类型，但在其矿床规模上有所差异，郯庐深大断裂东侧产出大型的招掖型金矿床，大型东海型水晶矿，还有辽南瓦房店金刚石矿和宽甸蓝宝石矿；西侧产有大型的蒙阴型金刚石矿，大型昌乐型蓝宝石矿，也有沂南金矿床和大别山区麻城霍山紫水晶矿的分布。深入研究郯庐断裂构造演化与成矿特征，有望扩大找矿的前景。  相似文献   

辽河群镁质碳酸盐建造及其非金属矿产   总被引：3，自引：0，他引：3  

孙厚江  吴春林 《矿产与地质》1996,10(1):60-65

辽河群镁质碳酸盐岩系，含矿岩石组合有黑尔峪组镁质碳酸盐含矿建造和大石桥组镁质碳酸盐含矿建造。其中由区域变质作用形成的白云石－滑石－菱镁矿、滑石－菱镁矿－透闪石、滑石－菱镁矿－水镁石－蛇纹石和硼矿物－蛇纹石－菱镁石－水镁石－滑石－金云母－透辉石等４种矿床组合形式，构成规律明显，经济价值大的非金属成矿系列。  相似文献