云开地区构造演化的岩石组构特征

在综合研究测试云开地区岩石组构的基础上，初步划分出云开地区至少有５期变形组构；晋宁期的组构表现为深层次ＮＮＥ（Ｎ）－ＳＳＷ（Ｓ）近水平伸展体制下的流变剪切滑脱，并发生区域变质和混合岩化；加里东期的组构表现为ＮＮＥ（Ｎ）－ＳＳＷ（Ｓ）挤压体制下的流变剪切，并在滑脱带形成大量同构造重熔型花岗岩；海西－印支期的组构反映了ＮＮＷ→ＳＳＥ的挤压逆冲推覆；燕山早期的组构反映了ＮＮＷ－ＳＥＥ挤压应力场作用了的专     

山东胶莱盆地五莲地区早白垩世红层古地磁研究及其构造意义

胶东半岛中生代以来的旋转变形对限定郯庐断裂的剪切走滑活动具有重要意义,然而目前对胶莱盆地中生代旋转变形与否及其幅度仍存在很大争议。本文选择胶莱盆地南部五莲地区早白垩世莱阳群龙旺庄组红层开展系统古地磁学研究,共采集11个采点82个定向古地磁岩芯样品。岩石磁学实验结果表明,样品的载磁矿物主要为赤铁矿,部分样品同时含有少量磁黄铁矿和磁铁矿;系统热退磁实验共分离出8个采点58个样品的稳定特征剩磁方向,并认为其可能代表岩石沉积时期的原生剩磁方向。8个采点的特征剩磁方向平均值为Ds=169. 5°、Is=33.2°、ks=40.9、α95 =8.8。相对于稳定东亚极,五莲地区发生了显著的（22.8°±8.8°）逆时针旋转变形。结合前人在胶莱盆地白垩纪沉积岩中获得的古地磁结果,指示胶莱盆地晚白垩世以来可能经历了整体的逆时针（10°~20°）旋转变形,而沿五莲断裂带向南西方向的逆时针旋转变形幅度增大,表明受郯庐断裂带左行走滑的影响增强。此外,沿郯庐断裂带不同部位在不同时期发生了不同方式和幅度的旋转变形,其不仅受郯庐断裂带左行剪切活动影响,还与断裂带周缘不同地体的性质及其所处的大地构造背景有关。     

采区巷道过大断层交汇区的地质及水文地质

柴里煤矿七采区采四周边界皆为断层 ,其中北边界为程楼断层 ,产状 :近ＥＷ∠ 70°～ 80° ,ＳＨ =12 0～15 0 ,西边界为徐庄断层 ,产状 :近ＳＮ∠ 5 5°～ 70°ＷＨ =80～ 12 0。七采区由上述两条断层与三采区呈对顶角关系。为了开采七采区 ,从三采区向七采区设计了两条下山巷道 ,因穿过两条大断层交汇区 ,地质条件和水文地质条件异常复杂 ,特别是受十灰水的重大威胁 ,采用以下分析方法和防治水措施 ,取得了良好效果。1　地质分析1 1　层位分析层位分析主要是对标志层的分析判断。通过把巷道中岩石样本、打钻的岩芯、岩粉与已有的岩石标本对…     

氢化物发生ICP—AES法测定岩石样品中痕量砷,锑,铋

研究了氢化物发生ＩＣＰ－ＡＥＳ法测定岩石样品中痕量Ａｓ、Ｓｂ和Ｂｉ的各种条件，拟定了分析方法，用本法以７个一级岩石标样进行分析，结果与推荐值一致。方法的检出限为（×１０＾－６）：Ａｓ０．０７，Ｓｂ０．０３，Ｂｉ０．０２。     

艾伯塔地区古生代——元古代基底的电磁成像

用岩石模型电磁试验对埋藏于加拿大西部沉积盆地（ＷＣＳＢ）之下的古生代－元古代基底构造成像，发现了一些高导电构造，它们几乎都是位于地震反射较低的陆壳上方，这里的ＥＭ数据清楚地显示了构造域与导电异常之间的关系，高导电局部异常反映了同造山期（古生代－元古代）陆外缘地槽中的静海相沉积，现有的地球物理、地质年代及地质资料和出露地盾的同生模拟是确定这些的基础。建立的模型与已知ＷＣＳＢ基底的时代、变形、历史和地     

北京怀柔崎峰茶-琉璃庙地区岩石磁组构特征及其构造意义

磁组构是指磁化率的各向异性。北京崎峰茶－琉璃庙地区岩石磁组构造特征是磁各向异性度Ｐ值、磁椭球扁率Ｅ＞０为主、磁面理发育而磁线理很差。本区构造变形强烈，以压扁变形为主，Ｓ－Ｎ向构造带是东盘上升、西盘下降，Ｅ－Ｗ向构造带是上盘由南向北逆冲。     

湘西沅麻盆地发现大面积油苗

湘西沅麻盆地发现大面积油苗钟建华（中科院长沙大地构造研究所）沅麻盆地位于湖南省西北部雪峰山脉西北侧、呈ＮＥ－ＳＷ向延伸，长约２４０ｋｍ，宽约４０ｋｍ，面积近１００００ｋｍ￣２，是一个较大的中、新生代盆地。１９９２年，我们在对该盆地进行考察时，在泸溪县...     

粤西大王山动力变质带磁组构的构造意义

通过磁组构和岩石变形特征的研究并结合其他资料,推断出大王山动力变质带是在加里东晚期岩浆侵入成岩后,多期构造叠加作用的结果,识别出四期构造造变形：第一期为海西期的ＳＷＷ→ＮＥＥ构造滑脱作用;第二期为海西－印支期的ＮＥ向左行平移剪切作用;第三、四期分别为燕山早期和喜马拉雅期的ＮＷ→ＳＥ逆冲作用。     

辽宁建平北部海西——印支期韧性剪切带变形特征及形成机制

辽宁建平北部海西－印支期韧性剪切带卷入变形的岩片为早二叠世八家超单元二长花网岩、太古宙曹家烧锅片麻岩（ＴＴＧ岩系）。该剪切带构成了辽西地区华北地台与内蒙兴安褶皱系两个构造单元重要分界线。前切带从东至西,构造线方位由ＥＷ向逐渐转向ＮＥＥ至ＮＥ向。前切带内各类构造岩具眼球状构造、条带状及细纹状构造,普遍发育有Ａ型褶皱、σ型长石残斑、压力影、Ｓ－Ｃ组构等指向构造,表明剪切方向由ＮＥ向ＳＷ左旋剪切,具走滑     

四川大邑,崇州,汶川,都江堰毗邻地区的侏罗系

龙门山中、南段的四川大邑、崇州、汶川、都江堰毗邻地区的侏罗系发育良好,呈ＮＥ－ＳＷ走向。地层划分出白田坝组、千佛岩组、沙溪庙组、遂宁组、莲花口组以及新建五龙沟砾岩５个正式组和１个非正式群级岩石地层单元。首次总结了岩石组合特征及相变,讨论了侏罗纪以电子自旋共振（ＥＳＲ）为依据的年代地层划分,并简要叙述了白田坝期－千佛岩期冲积扇－湖相、沙溪庙期－遂宁期的河流相、莲花口期和五龙沟砾岩的洪积扇（冲积扇相）     

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