西藏朱诺斑岩铜矿床发现的重大意义及启示

朱诺斑岩铜矿床位于冈底斯火山岩浆弧之中西部,它是在原区域化探成果中无任何有编号异常的情况下,通过对原始化探数据进行重新处理时发现的,是迄今为止品位最富的大型斑岩铜矿床。它的发现“使冈底斯斑岩铜矿带的勘查区域向西延伸了数百km,有望发展成为巨型斑岩铜矿带”,自此揭开了在冈底斯西部寻找斑岩铜矿的序幕。该成果入选2004年全国地质调查工作重大新闻第二名(地质成果第一名),这是创新思维与科学找矿的范例。文章在较系统介绍了该矿床的成矿背景、矿化特征、发现过程及勘查新进展的同时,客观展示了笔者运用新的找矿思路对原有化探数据进行二次开发、赋予各种信息以客观的地质内涵、进行异常筛选及成矿预测研究的全过程;特别是在找矿难度越来越大的今天,对于启迪人们的找矿思路及降低勘查风险、快速缩小找矿靶区等方面具有非常重大的理论及现实意义。     

西藏青草山斑岩铜矿化探异常特征及找矿潜力

青草山斑岩铜矿位于班公湖―怒江斑岩成矿带西段,是西藏地勘局地质二队在开展1∶200 000区域化探工作时新发现的矿床。经过查证发现了厚大铜矿体,认为青草山化探异常为矿致异常,矿区具有较好的成矿条件,找矿潜力巨大。     

伊吾县琼河坝地区斑岩铜矿成矿地质特征及远景评价

论述了琼河坝地区的成矿地质背景，以云英山斑岩型铜矿床为例，阐述了斑岩型铜矿的成矿地质特征与成矿远景,系统分析云英山到乌东沟约19km^2范围内的35个斑岩体的地质及矿化特征，从研究区的成矿地质条件、矿化特征和化探异常资料出发，评述了区内找斑岩型铜矿床的远景，指出区内有找到大型铜矿的资源潜力。并与蒙古Oyu Tolgoi超大型铜一金矿床进行初步对比，建议加强区内的勘查与研究．     

西藏驱龙铜矿区及其外围找矿前景地球化学评价

西藏驱龙斑岩铜矿床的发现是近年我国地勘行业找铜工作的重大突破之一。在发现找矿线索、确定成矿类型和评价找矿前景的过程中,勘查地球化学起了举足轻重的作用。1∶20万区域化探异常圈定了Cu-Mo矿化的范围,异常追踪查证工作确定了Cu-Mo矿化类型和找矿的有利地段。通过测区系统的地球化学勘查工作,结合地质构造资料,认为驱龙地区存在典型的斑岩铜矿床地球化学异常模式,矿化体剥蚀程度很浅,是找寻以斑岩型Cu-Mo矿化为主的超大型铜钼矿床的良好远景区。     

化探在西藏雄村矿区Ⅱ、Ⅲ号矿体发现中的作用

雄村矿区是西藏冈底斯斑岩铜矿带内已查明资源(储量)及规模达大型的铜金矿区,最早发现Ⅰ号Cu-Au矿体,其后发现了Ⅱ、Ⅲ号Cu-Au矿体。化探异常在Ⅱ、Ⅲ号矿体的发现和初期勘查中起到了至关重要的作用,尤其是在发现和圈定Cu-Au矿找矿靶区中提供了重要线索。通过分析Ⅱ、Ⅲ号矿体勘查工作中的化探异常特点及作用,旨在为应用化探异常指导找矿工作提供参考作用,同时,对于冈底斯斑岩铜矿带其他地段寻找该类型矿床,具有十分重要的意义。     

北山公婆泉斑岩铜矿区域地质地球化学异常结构模式

公婆泉铜矿是北山地区已发现的重要铜矿.从公婆泉铜矿田区域地球化学资料入手,研究了成矿的区域地质环境和地球化学环境,发现成矿元素异常组合(Cu-Ag-Au);指示元素异常组合(Cu-Pb-Zn-Ag-Cd和 W-Mo-Sn-Bi),成矿环境元素异常组合(U-P-F、Fe-V-Ni-Cr)的空间分布,从而总结出了甘肃北山地区公婆泉斑岩铜矿田的区域地质地球化学异常结构模式,以用于本区斑岩型铜矿床大范围的成矿预测,对于丰富和完善斑岩铜矿床地球化学模型具有一定的指示意义.     

土屋、延东铜矿田综合信息预测模型

为开发区域物探、化探资料进行找矿靶区优选，选择土屋、延东铜矿作为建模矿田．在分析成矿地质背景、区域重力航磁地球化学特征的基础上，利用重力、航磁数据处理资料提取了深部线性构造和环型构造，结合铜元素等地球化学异常分布，指出土屋、延东斑岩铜矿田位于EW向区域性线性构造、近NS向、NW向、NE向隐伏线性构造和环型构造的交汇部位和铜高背景及局部异常区中，提出了斑岩型铜矿田预测模型和“三位一体”的找矿标志．     

证据权法在西藏尼木铜多金属矿产资源潜力评价中的应用

尼木矿集区是冈底斯铜矿带重要的铜矿区之一,采用基于GIS的证据权法对该区进行成矿预测。介绍了证据权法的基本理论,对研究区进行综合致矿信息提取,分别从地质、化探和遥感数据中提取致矿异常信息,将不同异常信息作为成矿预测证据因子,并对相应证据因子进行分析和筛选。选择10个证据因子进行成矿预测,最终得出A类远景区1处,B类远景区5处,C类远景区10处。     

某斑岩钼(铜)矿区化探普查找矿的地质效果

本区是依据地质、构造等成矿有利条件,开展斑岩型铜钼矿床的找矿工作时,进行的大面积化探次生晕普查和局部详查.因而,获得了几十个不同组合类型的化探次生晕异常.经勘探验证,发现了斑岩钼(铜)矿.一发现异常的化探方法及技术     

青海省东昆仑洪水河东地区斑岩铜钼矿找矿潜力分析

洪水河东地区岩浆活动强烈,石英闪长斑岩、英云闪长斑岩较发育,岩体、围岩及其接触带绿泥石化、绿帘石化、碳酸盐化、钾长石化、高岭土化、迪开石化、绢云母化和矽卡岩化等蚀变普遍且较强烈,具斑岩型矿化蚀变特征。研究区内Cu、Mo、W化探组合异常分布较多,具备典型的斑岩铜矿床的元素组合特征,岩体含矿性与化探异常吻合,且在研究区盘羊沟、乌腊德地区发现了铜钼矿体。据此分析,认为洪水河东地区具备斑岩铜钼矿成矿地质条件,斑岩型铜钼矿找矿潜力较大。     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.     

Late Wuchiapingian (Late Dzhulfian,early Late Permian) limestone olistolites within the Tertiary flysch of Glypia Unit (Mount Parnon,central–eastern Peloponnesus,Greece)

Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931.     

PALEONTOLOGY

正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.)     

GEOCHEMICAL EXPLORATION

正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.)     

MICROPALAEONTOLOGY

正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.)     

PETROLOGY

正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus.,     

ENVIRONMENTAL GEOLOGY

正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an     

PROSPECTING EXPLORATION

正20141266Fan Chaoyan(Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes,Guangzhou 510275,China);Wang Zhenghai On Error Analysis and Correction Method of Measured Strata Section with Wire Projection Method(Journal of     

OCEANOGRAPHY & MARINE GEOLOGY

正20140582 Fang Xisheng(Key Lab.of Marine Sedimentology and Environmental Geology,First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China);Shi Xuefa Mineralogy of Surface Sediment in the Eastern Area off the Ryukyu Islands and Its Geological Significance(Marine Geology Quaternary Geology,ISSN0256-1492,CN37     

ENVIRONMENTAL GEOLOGY

正20141810 Bian Yumei(Geological Environmental Monitoring Center of Liaoning Province,Shenyang 110032,China);Zhang Jing Zoning Haicheng,Liaoning Province,by GeoHazard Risk and Geo-Hazard Assessment(Journal of Geological Hazards and Environment Preservation,ISSN1006-4362,CN51-1467/P,24(3),2013,p.5-9,2 illus.,tables,refs.)