湖南江永铅锌矿床岩溶成矿构造系列及其演化

文章从解析已知矿体入手,认为江永铅锌矿床外接触带主矿体不是脉型矿体,而是岩溶型矿体。岩溶成矿构造受石磴子组中厚层灰岩控制。一组岩溶由两个岩厅组成,一个发育于２００～３２０ｍ标高,另一个发育于４００～５５０ｍ标高。根据近等距性原则,分别于已知岩溶型矿体（Ⅱ、Ⅲ）的南、北两侧预测了Ⅰ、Ⅳ及Ⅴ号岩溶组。建立了岩溶成矿构造系列、结构及坑睛鉴别标志,并探讨了岩溶的形成与演化。预测结论与物探激电异常结果吻合。     

山东新城金矿床的叠加晕模式

１９８７年研究了Ⅰ号矿体地球化学异常特征,下部异常显示有深部盲矿前缘晕叠加,１９９４年探明的Ⅴ号矿体正好与其对应。１９９７年继续研究和建立了新城金矿的原生叠架晕模式,并用模式进行了预测。     

广西大厂铜坑锡矿矿体数字化与找矿预测研究

以计算机为辅助工具,利用MapGIS与"矿床数学模型软件包Ver2.0"等软件,完成了对广西大厂铜坑锡矿92号矿体、细脉带矿体的矿体数字化研究.在数字化的基础上,结合地质规律,进行了矿体周围及深部的成矿预测研究.结果圈定了五个找矿靶区,其中一个靶区经过工程验证,找到了盲矿.     

南河沟铜矿床主矿体形态特征研究

研究地层岩性,构造因素对3号主矿体形态的控制作用,认为原5号矿体与3号矿体应为同一矿体,构成了主矿体“h”型的平面形态特征,并对矿体深部的形态变化进行预测来指导探矿工作。     

黄沙坪铅锌矿开展成矿预测探盲又见成效

根据矿床成矿规律，黄沙坪铅锌矿在１２９中段南部３２４号矿体群的南东侧、ＡＦ３断裂的北西侧开展成矿预测，确定找矿靶区，探获到两个盲矿体，创潜在经济价值１９３万元。     

人工神经网络技术实现斑岩矿体深度预测

矿体深度预测不仅是成矿预测研究的重要内容之一,还是矿床成因研究和矿床勘探工程(坑探与钻探)决策的重要因素,同时,斑岩矿体深度预测直接影响到矿床的三维定位预测和矿产资源定量评价。因此,斑岩矿体的深度预测对于理论与实际地质工作都具有重要意义。     

矿产预测专家系统及其在新疆铜—镍硫化物矿床中的应用

系统地使用综合地质，地球物理、地球化学信息预测深部岩浆铜－镍硫化物矿床的找矿预测专家系统，已在新疆哈密地区香山岩体上就用并取得明显效果，设计的两个验证钻孔都已打到矿体。     

云南巧家松梁铅锌矿床Ⅰ号矿体构造原生晕轴向分带序列

松梁铅锌矿床是明显受构造控制的热液型铅锌矿床,在川滇黔铅锌成矿域内具有一定的代表性。在讨论矿床地质特征的基础上,文章选择该矿床有代表性的号矿体,研究其构造原生晕轴向分带序列。研究结果表明:号矿体构造原生晕综合轴向分带序列为:Li-P-Cu-Ba-Cd-Ga-Zn-V-Ag-Mn-Ge→U-Sn-Th-Be-ΣREE-Pb-Bi→Cs-In-Ta-Tl-Ti-Co-Nb-Mo-W→Zr-Ni-Sr-Rb-Hf-Cr;号矿体构造原生晕轴向分带序列和地球化学参数在轴向上的变化规律均表明其构造原生晕结构比较复杂,反映号矿体成矿作用经历了多期多阶段,同时预测号矿体深部延深较好或有隐伏矿体存在的可能性。     

山东省苍山县小阎庄铁矿矿区东部水文地质特征研究

通过地球物理勘探、水文地质调查、钻孔和抽水试验,结合区域水文、气象、地质和水文地质等资料,求得了矿体上部盖层裂隙岩溶水水文地质参数,且对裂隙岩溶水水量进行了计算;以“大井法”为主对矿坑涌水量进行了预测,基本查明了矿区东部的水文地质特征;阐述自然条件下裂隙岩溶水对基岩裂隙水的补给微弱;当水动力条件发生改变时,易造成盖层裂隙岩溶水下渗溃入坑道,对下部矿体的开采将产生较大威胁。     

黄铁矿热电性在铜矿床深部找矿预测中的应用——以滇中和尚洞铜矿Ⅰ号矿体为例

黄铁矿热电性是矿床学及深部地质找矿的重要研究内容之一,该方法多应用于金矿床的地质勘探,而在铜矿床勘探中应用较少。滇中和尚洞铜矿床属于中高温热液矿床,矿体宏观地质条件差异小,深部找矿难度大,本文对该矿床Ⅰ号矿体开展了黄铁矿热电性特征及深部找矿预测研究。结果表明,该矿床黄铁矿热电系数分布呈现多峰组合,矿体铜矿化强度与黄铁矿P-N型的出现率及离散度等关系密切,尽管1580中段仍存在工业矿体,但Ⅰ号矿体深部延伸相对较小,找矿前景相对较差。研究表明,利用黄铁矿热电系数特征指导铜矿床的深部找矿预测是可行的。     

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.     

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.     

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.     

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