东太平洋CC区多金属结核的地质学特征及形成环境

通过对东太平洋CC区洋底地质取样及实验测试分析,运用洋底照相、多频探测等多种地球物理方法手段,进一步阐明了CC区多金属结核的形态、主要类型、丰度、覆盖率、品位、化学成分及分布特征.通过对CC区区域地质背景及地形地貌的综合研究,深入探讨了多金属结核的形成环境.通过对CC区多金属结核的分布规律与形成环境的综合研究,揭示了该区多金属结核的形成与地质环境之间的内在关系,这对于分析研究该区多金属结核的形成机理,为多金属结核资源评价和开发提供科学依据,对于大力开发与利用洋底多金属矿产资源,具有重要的科学意义和经济意义.     

江苏宜兴周铁地区地质地球物理场特征及找矿潜力

分析研究了江苏宜兴周铁地区的地质背景和地球物理场特征.周铁地区既有寻找矽卡岩型铁、铅锌银多金属或热液充填型铜多金属矿产的成矿地质背景条件,又有良好的重磁异常反映.结合宣州—苏州Ⅳ级成矿带找矿模式和铁、铜铅锌银多金属矿产典型矿床重磁场特征,探讨了周铁地区铁、铜铅锌银多金属矿产的找矿潜力.     

东太平洋CC区多金属结核矿物学特征及物源

通过对东太平洋CC区洋底地质取样及实验测试分析,运用洋底照相、多频探测等多种地球物理方法手段,进一步阐明了CC区多金属结核的形态、主要类型、化学成分及分布特征.通过对CC区沉积作用、生物作用、洋底火山作用、海水化学成分、南极底流等因素的综合研究分析, 进一步揭示了多金属结核形成的物质来源.通过对CC区区域地质背景及地形地貌的综合研究分析, 进一步探讨了多金属结核的形成环境,并建立了成矿模式.     

地质与地球物理综合找矿预测——以刘家坪VMS型铜锌矿床为例

地质与地球物理方法的综合找矿预测是以成矿模式和地球物理理论为基础,将矿床（地质体）成矿理论、地球物理、地球化学、遥感等信息进行综合分析的工作方法（张宝林,2004;廖桂香,2007）。矿床的形成经历了特定的成矿条件和成矿过程,并赋存于一定的地质环境中,地球物理信息是对地质体的空间分布特征的反映,不包含成矿的直接信息,因此,在成矿预测与找矿过程中,要以地质成矿理论为基础,充分挖掘地球物理、地球化学等的综合数据,尽可能地排除干扰,提取有利信息（申萍等,2011;陈思宇,2014）。本文以刘家坪VMS型铜锌矿床为例,介绍综合地质-地球物理方法在多金属硫化物矿床中的应用,建立了VMS型矿床综合找矿模式,为其他地区的找矿工作提供一定的理论与实践依据。     

皇城山银矿床地球物理特征及找矿模型

皇城山银矿是典型的火山岩型中低温热液矿床。矿体、控矿构造、岩浆岩、赋矿地层以及周围地质体之间存在某种物性差异,因而有明显的地球物理异常特征,构成了银矿床重要的地球物理找矿标志。作者试图在矿床地球物理特征研究的基础上,总结地球物理找矿模型,以期配合、指导正在进行中的大别山北坡多金属成矿带的普查找矿工作。     

戈壁荒漠覆盖区地质调查中综合地球物理方法与实践

戈壁荒漠覆盖区地质填图是新时期地质调查工作的重点内容之一.覆盖区地质填图的基本目标包括两个方面,一是揭示覆盖层下伏基岩面地质结构,即填绘基岩面地质图;二是揭示覆盖层地质结构,包括地表覆盖层地质结构和覆盖层的三维地质结构.综合利用地球物理方法可以获得覆盖区地下地质结构、岩石属性、沉积物分布与层状结构等信息.而经济有效地选择和组合实施地球物理方法是完成覆盖区地质填图目标任务的重要保障.基于近年在新疆东天山地区开展的覆盖区地质填图工作,提出了针对多覆盖层结构背景下地质填图的综合地球物理方法组合的技术策略.综合地球物理方法以及新技术在巴里坤盆地和哈密盆地的应用展示了其效果,并为在戈壁荒漠覆盖区地质调查过程中如何开展地球物理工作提供了示范和借鉴.      

薄刀岭银金矿床地球物理特征及找矿标志

薄刀岭银金矿是典型的中型韧、脆性剪切带型矿床。矿体、控矿构造、岩浆岩、赋矿地层以及周围地质体之间存在某种物性差异,因而有明显的地球物理异常特征,构成了银金矿床重要的地球物理找矿标志。作者试图在矿床地球物理特征研究的基础上,总结地球物理找矿标志,以期配合、指导正在进行中的大别山北坡多金属成矿带的普查找矿工作。     

《地质与勘探》投稿须知

<正>《地质与勘探》以刊载固体矿产地质、成矿规忭与成矿预测、矿产资源评价、找矿勘探方法、地球物理和地球化学勘查、岩石矿物研究、同位素地质、数学地质与遥感地质和钻探技术、水文、工程、环境地质等专业科研成果为主要内容。主要栏目冇金属矿产、地球化学、地球物理、遥感地质、油气资源、新技术.新方法、矿产经济和水文·工程.环境等。     

内蒙古渣尔泰群铜、铅、锌等多金属硫化物矿床综合模型的建立及应用

本文在地质、地球物理、地球化学先验背景上,按照信息关联、转换的思路建立了内蒙古渣尔泰群铜、铅、锌等多金属硫化物矿床综合模型。简述了模型的适用性及实际预测情况。     

内蒙古渣尔泰群铜、铅、锌等多金属硫化物矿床综合模型的建立及应用

本文在地质、地球物理、地球化学先验背景上, 按照信息关联、转换的思路建立了内蒙古渣尔泰群铜、铅、锌等多金属硫化物矿床综合模型。简述了模型的适用性及实际预测情况。     

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.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ₁ roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003).     

NONMETALS DEPOSITS

正20141520 Bo Ying(Key Laboratory of Metallogeny and Mineral Assessment,MLR,Beijing 100037,China);Liu Chenglin Saline Spring Hydrochemical Characteristics and Indicators for Potassium Exploration in Southwestern and Northern Tarim Basin,Xinjiang(Acta Geoscientica Sinica,ISSN1006-3021,CN11-3474/P,34(5),2013,p.594-602,5 illus.,3 tables,28 refs.)     

MATHEMATICAL GEOLOGY

正20141243Chen Ge(Hangzhou Research Institute of Petroleum Geology,PetroChina,Hangzhou 310023,China);Si Chunsong Study on Sedimentary Numerical Simulation Method of Fan Delta Sand Body(Journal of Geology,     

PROSPECTING EXPLORATION

正20142599Chen Sanming(Guangxi Key Laboratory of Concealed Deposits Exploration,Guilin University of Technology,Guilin541004,China);He Yuzhou Block Model and Reserves Estimation of Panzhihua Iron Deposit Based on 3D Geological Modeling(Journal of Guilin University of Technology,ISSN1674-9057,CN45-1375/N,33(4),2013,p.610-615,9illus.,1table,15refs.)     

STRUCTURAL GEOLOGY

正20140594 Bai Daoyuan(Hunan Institute of Geology Survey,Changsha 410016,China);Zhong Xiang Faults in the Jingzhou Basin and Their Tectonic Settings(Geotectonica et Metallogenia,ISSN1001-1552,CN44-1595/P,37(2),2013,p.173-183,6illus.,59refs.)Key words:basin evolution,tectonic setting,South China In the Upper Paleozoic and Jurassic se-     

STRUCTURAL GEOLOGY

正20141912Cao Hui(State Key Laboratory for Continental Tectonics and Dynamics,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China)Gravitational Collapse and Folding during Orogenesis:A Comparative Study of FIA Trends and Fold Axial Plane Traces(Geology in China,ISSN1000-3657,CN11-1167/P,40(6),2013,p.1818-1828,9illus.,35refs.,with