江苏镇江—扬州长江公路大桥桥基断裂断层泥定量研究   总被引：7，自引：1，他引：6  

汪明武  罗国煜 《地质论评》2000,46(4):437-442

本文通过断裂层泥的矿物组分特征、粒度成分结构和分形、成熟度和目前活动度、石英碎屑形貌ＳＥＭ观测来分析与评价镇江至扬州长江公路大桥桥基断裂的抗震和抗断问题,得到主要影响桥基稳定性的ＮＷ－ＮＮＷ向世业洲场区优势断裂,主要活动时间为Ｑ３－Ｑ２。该研究对断裂带上建设特大型桥梁工程的区域稳定性综合研究和论证,以及对大桥工程的合理选址、设计和确保安全具有重大实际意义。  相似文献   

氧化铬-铝混杂柱支撑蒙脱石的制备和性能     

田淑贵  王冠鑫  林传易  陈国玺 《矿物学报》2000,20(2):108-111

以浙江和新疆的膨润为原料合成了氧化铬－铝混杂柱支撑蒙脱石。分别用铝盐及铬盐溶液,经碱水解生成的聚羟基铬－铝混杂阳离子的成柱溶液,聚羟基铬－铝混杂阳离子通过阳离子交换引入蒙脱石,所得产物的性质用Ｘ射线衍射、热分析、红外光谱和ＢＥＴ比表面及孔径分布测量等方法研究并与氧化铬柱支撑脱石（简称铬蒙脱石）的性能进行比较,所得氧化铬－铝混杂柱支撑蒙脱石（简称铬－名蒙脱石）,其基面间距较高（２．１ｎｍ＾２／ｇ,这  相似文献   

广西靖西县新圩铝土矿Ⅶ号矿体矿石热分析   总被引：1，自引：0，他引：1  

刘学飞  王庆飞  张起钻  周芳  高帮飞  徐浩 《矿物岩石》2008,28(4)

广西靖西新圩堆积型铝土矿为我国典型的一水铝型铝土矿。以新圩堆积型铝土矿的典型样品为研究对象,通过X衍射分析确定其矿物组成,进一步借助差热(DTA)与热重(TG/DTG)分析,探索铝土矿石加热过程。X衍射分析显示5个铝土矿样品矿物组成主要为硬水铝石、赤铁矿、绿泥石、三水铝石、锐钛矿、金红石、针铁矿以及少量的高岭石。差热(DTA)分析显示铝土矿样品有2个明显的吸热峰,分别为三水铝石和硬水铝石吸热峰;热重(TG/DTG)曲线显示样品分解分为4个阶段,分别为吸附水失去阶段和三水铝石、针铁矿、硬水铝石脱羟基作用阶段。利用热重(TG/DTG)数据分别计算了硬水铝石、三水铝石、针铁矿矿物相对百分含量,与国内外同类型铝土矿矿石热分析特征对比显示具有大体一致的热分析特征。  相似文献   

四川软玉猫眼的谱学综合鉴定   总被引：1，自引：0，他引：1  

卢保奇  亓利剑  夏义本 《上海国土资源》2008,(3):57-60

采用拉曼光谱、傅里叶变换红外光谱、电子探针波谱以及X射线粉晶衍射谱对四川软玉猫眼进行谱学研究。结果表明软玉猫眼主要由透闪石组成。计算所得的平均化学式为：（Ca1.96Na0.02）（Mg4.52Fe0.59Mn0.03）5.14[（Si7.92Al0.04）7.96O23]。其红外吸收频率主要出现在940 cm^-1-1105 cm^-1、650 cm^-1-760 cm^-1和450 cm^-1-510 cm^-1范围内。3600cm^-1-3800 cm^-1范围内OH基伸缩振动拉曼谱带分裂,并向低波数方向位移,主要与Mg^2＋和Fe^2＋的含量有关。  相似文献   

HyLogging unconventional petroleum core from the Cooper Basin,South Australia     

A. J. Hill 《Australian Journal of Earth Sciences》2016,63(8):1087-1097

The Cooper Basin is currently Australia's premier onshore hydrocarbon-producing province and hosts a range of unconventional gas play types, including the very extensive basin-centred and tight gas accumulations in the Gidgealpa Group, both shallow and deep dry coal seam gas associated with the Patchawarra and Toolachee formations, as well as the shale gas plays in the Murteree and Roseneath shales. Characterisation of mineralogical properties of shales is critical to hydraulic fracture design and development of unconventional hydrocarbon resources. Properties are sensitive to variations in mineralogy, especially clays, and historically, acquisition of a suite of rock mechanics analyses has been on a point-source basis rather than on a continuous sampling approach, which is uncommon. In this paper, a near-continuous 382 m cored section, comprising the lower Permian Daralingie Formation, Roseneath and Murteree shales, the Epsilon Formation and the top portion of the Patchawarra Formation from Holdfast-1 well (DH261958) in the southern Cooper Basin, was measured using robotic core scanning spectroscopy with automated mineral identification. HyLogger 3 incorporates visible, near infrared, shortwave infrared and thermal infrared hyperspectral measurements recorded every 0.8 cm along the core at the rate of approximately 1 m per minute. These data are co-registered with a high-resolution image and a laser profile of the core. X-ray diffraction and thin-section petrology from the Holdfast-1 well-completion report (Beach Energy, 2011 Beach Energy (2011). Holdfast 1 well completion report. South Australian Department of State Development. Open file WCR 2010/000390. Retrieved from: https://sarigbasis.pir.sa.gov.au/WebtopEw/ws/samref/sarig1/image/DDD/HOLDFAST_001.zip [Google Scholar]) provided relative proportions of minerals including quartz, kaolinite, dickite, muscovite, illite, chlorite and siderite that enabled the modelled vs actual mineralogies to be constrained in the thermal infrared with a correlation coefficient of 0.85 for quartz, 0.79 for muscovite and 0.68 for kaolin; illite and siderite were more poorly correlated. HyLogger logging, when integrated with other petrophysical and analytical core data, provides a useful tool to better understand unconventional reservoirs and may assist in identification of zones that are conducive to fracture stimulation.  相似文献   

纳米珍珠层粉的制备     

张建刚  童银洪  刘贵昂 《广东海洋大学学报》2003,23(6):26-29

以海水珍珠层粉为原料 ,用行星式球磨机制备纳米珍珠层粉 ,对所得珍珠层粉采用扫描电镜法进行检测和X射线衍射分析。结果表明 ,所得珍珠层粉实现了纳米化 ,其颗粒大小为 4 5～ 6 5nm。  相似文献   

巴林石、寿山石透明度研究     

高孔  狄敬如 《地质科学译丛》2010,(3):26-33

通过分析巴林石、寿山石样品的FTIR与XRD光谱特征,指出有序度指数（OI）、结晶度指数（HI,DHI）及半高宽（FWHM（00l））在用于研究高岭石与地开石混合相样品的组分时具有局限性;计算了样品的有序度指数和结晶度指数并研究了各自与透明度之间的关系,结果证实,寿山石样品的透明度随其有序度与结晶度的增加而增大,但没有发现巴林石样品存在类似规律。  相似文献   

Evidence of Saharan dust in upper Pleistocene reworked palaeosols of North‐west Sardinia,Italy: palaeoenvironmental implications     

STEFANO ANDREUCCI  MARK D. BATEMAN  CLAUDIO ZUCCA  SELIM KAPUR  İHSAN AKŞIT  ADAM DUNAJKO  VINCENZO PASCUCCI 《Sedimentology》2012,59(3):917-938

A multi‐disciplinary approach was followed to investigate two thick palaeosol strata that alternate with wind‐blown dominated deposits developed along the Alghero coast (North‐west Sardinia, Italy). Optically stimulated luminescence ages reveal that both palaeosols were developed during cooler drier periods: the first one at around 70 ka Marine Isotope Stage 4 and the latter around 50 ka (Marine Isotope Stage 3). In contrast, the pedological features indicate that the palaeosols underwent heavy weathering processes under warm humid to sub‐humid conditions, characteristic of the Sardinian climate during the last interglacial stage (Marine Isotope Stage 5e). To reconcile this apparent data discrepancy, a range of sedimentological and pedological analyses were conducted. These analyses reveal that the palaeosols possess a complex history, with accumulation and weathering occurring during Marine Isotope Stage 5e, and erosion, colluviation and final deposition taking place during the following cold stages. Thus, even if these reddish palaeosols were last formed during the glacial period, the sediments building up these strata probably record the climate of the last interglacial stage (Marine Isotope Stage 5e). Trace element and X‐ray diffraction analyses, together with scanning electron microscope images, reveal the presence of Saharan dust in the parent material of the palaeosols. However, no evidence of any far‐travelled African dust has been observed in the Marine Isotope Stage 4–3 aeolian deposits. It is possible to conclude that in the West Mediterranean islands, Saharan dust input, even if of modest magnitude, is preserved preferentially in soils accumulated and weathered during interglacial stages.  相似文献   

K-H₃OFe₃(SO₄)₂(OH)₆铁矾的XRD研究     

许涛  邹来昌  阮仁满  廖占丕  苏秀珠  苏妤芸  黄丽娟 《岩石矿物学杂志》2013,32(6):995-1000

根据X射线衍射(XRD)分析发现: A Fe₃(SO₄)₂(OH)₆(A=K⁺、H₃O⁺)系列铁钒的XRD数据十分相近,难以用XRD区别,需通过能谱(EDS)辅助分析,才能区分此类铁矾。另外,此类铁矾的003和107面网间距d随K⁺含量增大而增大,且呈一元三次方程的关系;而033和220面网间距d随K⁺含量增大而减小,呈一元二次方程的关系。对该现象从铁矾晶体结构方面进行解释:K⁺、H₃O⁺离子位于较大空隙中,且沿着Z轴方向排列,当K⁺、H₃O⁺离子之间相互替换时,会导致该铁矾晶体结构在Z轴方向有较明显的变化。  相似文献   

A standardless method of quantitative X-ray diffractometry using target-transformation factor analysis     

T. H. Starks  J. H. Fang  L. S. Zevin 《Mathematical Geology》1984,16(4):351-367

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