ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Unknown
    London : The Geological Society
    Keywords: Petrophysik ; Geophysics ; Petroleum - Geology ; Petroleum engineering ; Rocks
    Description / Table of Contents: P. D. Jackson, D. G. Gunn, R. C. Flint, D. Beamish, P. I. Meldrum, M. A. Lovell, P. K. Harvey, and A. Peyton: A non-contacting resistivity imaging method for characterizing whole round core while in its liner / Geological Society, London, Special Publications, 122:1-10, doi:10.1144/GSL.SP.1997.122.01.01 --- D. J. Prosser, A. Hurst, and M. R. Wilson: One-man-operable probe permeameters / Geological Society, London, Special Publications, 122:11-18, doi:10.1144/GSL.SP.1997.122.01.02 --- S. R. McDougall, A. B. Dixit, and K. S. Sorbie: Network analogues of wettability at the pore scale / Geological Society, London, Special Publications, 122:19-35, doi:10.1144/GSL.SP.1997.122.01.03 --- S. Pugliese and N. Petford: Pore-structure visualization in microdioritic enclaves / Geological Society, London, Special Publications, 122:37-46, doi:10.1144/GSL.SP.1997.122.01.04 --- Paul B. Basan, Ben D. Lowden, Peter R. Whattler, and John J. Attard: Pore-size data in petrophysics: a perspective on the measurement of pore geometry / Geological Society, London, Special Publications, 122:47-67, doi:10.1144/GSL.SP.1997.122.01.05 --- M. S. King, A. Shakeel, and N. A. Chaudhry: Acoustic wave propagation and permeability in sandstones with systems of aligned cracks / Geological Society, London, Special Publications, 122:69-85, doi:10.1144/GSL.SP.1997.122.01.06 --- Shiyu Xu, Just Doorenbos, Sue Raikes, and Roy White: A simple but powerful model for simulating elastic wave velocities in clastic Silicate rocks / Geological Society, London, Special Publications, 122:87-105, doi:10.1144/GSL.SP.1997.122.01.07 --- T. Apuani, M. S. King, C. Butenuth, and M. H. De Freitas: Measurements of the relationship between Sonic wave velocities and tensile strength in Anisotropic rock / Geological Society, London, Special Publications, 122:107-119, doi:10.1144/GSL.SP.1997.122.01.08 --- C. McCann, J. Sothcott, and S. B. Assefa: Prediction of petrophysical properties from seismic quality factor measurements / Geological Society, London, Special Publications, 122:121-130, doi:10.1144/GSL.SP.1997.122.01.09 --- Y. F. Sun and D. Goldberg: Estimation of aspect-ratio changes with pressure from seismic velocities / Geological Society, London, Special Publications, 122:131-139, doi:10.1144/GSL.SP.1997.122.01.10 --- P. K. Harvey, M. A. Lovell, J. C. Lofts, P. A. Pezard, and J. F. Bristow: Petrophysical estimation from downhole Mineralogy logs / Geological Society, London, Special Publications, 122:141-157, doi:10.1144/GSL.SP.1997.122.01.11 --- Paul F. Worthington: Petrophysical estimation of permeability as a function of scale / Geological Society, London, Special Publications, 122:159-168, doi:10.1144/GSL.SP.1997.122.01.12 --- C. A. Gonçalves, P. K. Harvey, and M. A. Lovell: Prediction of petrophysical parameter logs using a multilayer backpropagation neural network / Geological Society, London, Special Publications, 122:169-180, doi:10.1144/GSL.SP.1997.122.01.13 --- Brian P. Moss: The partitioning of petrophysical data: a review / Geological Society, London, Special Publications, 122:181-252, doi:10.1144/GSL.SP.1997.122.01.14 --- A. Revil, P. A. Pezard, and M. Darot: Electrical conductivity, spontaneous potential and ionic diffusion in porous media / Geological Society, London, Special Publications, 122:253-275, doi:10.1144/GSL.SP.1997.122.01.15 --- Brígida Ramati P. Da Rocha and Tarek M. Habashy: Fractal Geometry, porosity and complex resistivity: from rough pore interfaces to hand specimens / Geological Society, London, Special Publications, 122:277-286, doi:10.1144/GSL.SP.1997.122.01.16 --- Brígida Ramati P. Da Rocha and Tarek M. Habashy: Fractal Geometry, porosity and complex resistivity: from hand specimen to field data / Geological Society, London, Special Publications, 122:287-297, doi:10.1144/GSL.SP.1997.122.01.17 --- M. Ben Clennell: Tortuosity: a guide through the maze / Geological Society, London, Special Publications, 122:299-344, doi:10.1144/GSL.SP.1997.122.01.18 --- J. C. Lofts, J. Bedford, H. Boulton, J. A. van Doorn, and P. Jeffreys: Feature recognition and the interpretation of images acquired from horizontal wellbores / Geological Society, London, Special Publications, 122:345-365, doi:10.1144/GSL.SP.1997.122.01.19 --- D. Goldberg and Y. F. Sun: Scattering attenuation as a function of depth in the Upper Oceanic Crust / Geological Society, London, Special Publications, 122:367-375, doi:10.1144/GSL.SP.1997.122.01.20 --- N. Passas, C. Butenuth, and M. H. De Freitas: An application of the Moiré Method to a study of local strains during rock failure in tension / Geological Society, London, Special Publications, 122:377-388, doi:10.1144/GSL.SP.1997.122.01.21
    Pages: Online-Ressource (VII, 393 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1897799810
    Language: English
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Keywords: Bewertung ; Mineralischer Rohstoff ; Prospektion ; Minerale
    Description / Table of Contents: Definitions --- G. P. Riddler: What is a mineral resource? / Geological Society, London, Special Publications, 79:1-10, doi:10.1144/GSL.SP.1994.079.01.01 --- M. G. Armitage and M. F. A. Potts: Some comments on the classification of resources and reserves / Geological Society, London, Special Publications, 79:11-16, doi:10.1144/GSL.SP.1994.079.01.02 --- Z. Jakubiak and T. Smakowski: Classification of mineral reserves in the former Comecon countries / Geological Society, London, Special Publications, 79:17-28, doi:10.1144/GSL.SP.1994.079.01.03 --- Data --- P. D. Gribble: Fault interpretation from coal exploration borehole data using SURPAC2 software / Geological Society, London, Special Publications, 79:29-35, doi:10.1144/GSL.SP.1994.079.01.04 --- W. Hatton: INTMOV: a program for the interactive analysis of spatial data / Geological Society, London, Special Publications, 79:37-43, doi:10.1144/GSL.SP.1994.079.01.05 --- C. P. Nathanail: Reserve assessment of a stratified deposit with special reference to opencast coal mining in Great Britain / Geological Society, London, Special Publications, 79:45-52, doi:10.1144/GSL.SP.1994.079.01.06 --- Deposit variability --- A. J. G. Notholt: Phosphate rock: factors in economic and technical evaluation / Geological Society, London, Special Publications, 79:53-65, doi:10.1144/GSL.SP.1994.079.01.07 --- T. M. Bell and M. K. G. Whateley: Evaluation of grade estimation techniques / Geological Society, London, Special Publications, 79:67-86, doi:10.1144/GSL.SP.1994.079.01.08 --- P. A. Dowd: Optimal open pit design: sensitivity to estimated block values / Geological Society, London, Special Publications, 79:87-94, doi:10.1144/GSL.SP.1994.079.01.09 --- M. J. Scoble and A. Moss: Dilution in underground bulk mining: implications for production management / Geological Society, London, Special Publications, 79:95-108, doi:10.1144/GSL.SP.1994.079.01.10 --- E. J. Sides: Quantifying differences between computer models of orebody shapes / Geological Society, London, Special Publications, 79:109-121, doi:10.1144/GSL.SP.1994.079.01.11 --- Finance --- Patrick Gorman: A review and evaluation of the costs of exploration, acquisition and development of copper and gold projects in Chile / Geological Society, London, Special Publications, 79:123-128, doi:10.1144/GSL.SP.1994.079.01.12 --- J. O’Leary: Mining project finance and the assessment of ore reserves / Geological Society, London, Special Publications, 79:129-139, doi:10.1144/GSL.SP.1994.079.01.13 --- Case histories --- P. A. Dowd: The optimal design of quarries / Geological Society, London, Special Publications, 79:141-155, doi:10.1144/GSL.SP.1994.079.01.14 --- S. Al-Hassan and A. E. Annels: Geostatistical estimation of manganese oxide resources at the Nsuta Mine / Geological Society, London, Special Publications, 79:157-169, doi:10.1144/GSL.SP.1994.079.01.15 --- A. E. Annels, S. Ingram, and L. Malmstrom: Structural reconstruction and mineral resource evaluation at Zinkgruvan Mine, Sweden / Geological Society, London, Special Publications, 79:171-189, doi:10.1144/GSL.SP.1994.079.01.16 --- J. Arthur and A. E. Annels: The application of geostatistical techniques to in situ resource estimation in the sand and gravel industry / Geological Society, London, Special Publications, 79:191-205, doi:10.1144/GSL.SP.1994.079.01.17 --- R. I. Cameron and H. Middlemis: Computer modelling of dewatering a major open pit mine: case study from Nevada, USA / Geological Society, London, Special Publications, 79:207-217, doi:10.1144/GSL.SP.1994.079.01.18 --- L. A. Crump and R. Donnelly: Opencast coal mining: a unique opportunity for Clee Hill Quarry / Geological Society, London, Special Publications, 79:219-232, doi:10.1144/GSL.SP.1994.079.01.19 --- J. Barry, J. Guard, and G. Walton: Database management at the Lisheen deposit, Co. Tipperary, Ireland / Geological Society, London, Special Publications, 79:233-239, doi:10.1144/GSL.SP.1994.079.01.20 --- C. J. Mitchell: Laboratory evaluation of kaolin: a case study from Zambia / Geological Society, London, Special Publications, 79:241-247, doi:10.1144/GSL.SP.1994.079.01.21 --- J. O’Leary: Cia Minera Los Pelambres: a project history / Geological Society, London, Special Publications, 79:249-263, doi:10.1144/GSL.SP.1994.079.01.22
    Pages: Online-Ressource (VIII, 271 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1897799063
    Language: English
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Contributions to mineralogy and petrology 75 (1981), S. 339-352 
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Whether or not a growing porphyroblast can displace its surrounding matrix is an important but contentious issue affecting the interpretation of metamorphic textures. As an alternative to treating the problem in terms of ‘force of crystallization’, this paper examines the mechanics of porphyroblast-matrix interaction using a different and much simpler conceptual framework. New microstructural evidence for matrix displacement is then presented and analysed in detail. This evidence, from a hornfelsed metagreywacke, consists of dome-shaped accumulations of muscovite and graphite, each dome being attached to (and concave towards) a rhombdodecahedral face of a garnet porphyroblast. Muscovite within the domes shows a dimensional preferred orientation subparallel to the dome outlines while, in the matrix away from the domes, there is no preferred orientation. Our model for the origin of the mica domes envisages muscovite and graphite being swept ahead of, and mechanically accumulated onto, the growing garnet faces as they advance through the matrix. Rigorous testing of this model provides strong evidential support for matrix displacement by growing porphyroblasts. A new analysis is provided of the conditions under which matrix grains are included or displaced by porphyroblasts. It is concluded that matrix grain displacement may be very common, although the special combination of circumstances necessary to produce a diagnostic microstructural pattern probably occurs very rarely.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 2 (1973), S. 33-44 
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: This account describes a rapid and accurate fusion technique of X-ray fluorescence analysis that is based on the method of Norrish and Hutton,1 but modified from the latter in a number of respects to enable more rapid preparation and processing of samples without any loss of accuracy. The technique allows a wide range of materials to be analysed including silicate rocks and minerals, cements, bricks, carbonates, evaporites, soils and some ores.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 2 (1973), S. 147-150 
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: On the assumption that X-ray count data are normally distributed, certain tests for detecting outliers or ‘wild’ values within replicate sets of three measurements are compared. Treated as ‘insurance policies’ rather than formal statistical tests, the statistics discussed are useful for monitoring X-ray data, particularly in computer oriented systems. The problem of the correction of outliers is briefly discussed.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 21 (1992), S. 3-9 
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Compton scatter corrections are widely used for trace element determinations in geological materials where elements heavier than iron commonly occur only in low concentrations and whose effects on matrix absorption are usually ignored. Problems with the Compton correction for absorption can be seen if the concentrations of these trace elements become anomalously large, perhaps up to a few percent, although the effects can actually become significant at only a few hundred parts per million. When this occurs the simple absorption relationship, estimated at the Compton wavelength, becomes distorted. An iterative algorithm is presented that corrects absorption ratios at any wavelength as absorption edges are encountered during processing and in turn extends the Compton method to the accurate determination of anomalously high trace element concentrations.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    facet.materialart.
    Unknown
    In:  Geological Society Special Publication 240: 107-115.
    Publication Date: 2007-10-08
    Description: Naturally fractured reservoirs often contain a range of different fracture types and networks; fractures that are relatively permeable and relatively impermeable, unconnected and connected to the part of the fracture network that carries fluid flow, and naturally occurring or drilling induced. Consequently, in terms of their fluid connectivity, fractures may be open or closed, while individual fractures may be isolated or well connected. We have adapted our approach to imaging sedimentary fabric in the laboratory, where we related electrical core images to properties such as porosity, permeability, grain size and cementation, to enable electrical imaging of fractures in core. Our approach uses similar principles to those employed in down-hole electrical imaging. The results demonstrate an ability to image conductive fractures in fully saturated low-porosity water-bearing core: these fractures being electrically connected from the flat measurement surface through to the outer surface of the core. Published results for numerical modelling of down-hole electrical imaging tools show the electrical response is related to fracture depth and fracture aperture. Our experimental results on fractured core in the laboratory support these numerical observations, increased current flowing into the fracture as the aperture increases. The finite size of the electrode, however, means that this technique cannot distinguish between a single fracture and smaller groups of fractures intersecting the electrode.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Publication Date: 2007-10-08
    Description: The Penrith Sandstone is an orange/red, mainly homogeneous, friable rock made up of well-rounded, highly spherical quartz grains, often showing euhedral overgrowths of quartz. Sandstone samples from Stoneraise Quarry, NW England, exhibit a remarkable degree of rounding and very high sphericity, along with frosted textures typical of aeolian deposits. Chemically, the rock is predominantly SiO2 (〉95%), with no evidence of carbonate cements. Quartz predominates with a small proportion (10%) of feldspar. The grain size across heterogeneous zones varies from very fine (100 {micro}m) to coarse sand (700 {micro}m). There is no evidence of the presence of clay minerals. Petrophysically, based on the measurements made in this study, the Penrith Sandstone is a typical clean sandstone characterized by moderate porosity (12%) and core-plug permeability (10-14-10-12 m2), and Archie m' exponents between 1.90 and 1.91, suggesting a reasonably clean Archie' rock with no excess conductivity associated with clays or bound water. Capillary pressure curves for four samples demonstrate unimodal pore-size distributions with a single modal range that varies between 25-50 and 70-80 {micro}m. Because of the relative simplicity of its petrophysics, the sandstone is thus potentially very useful in fundamental studies, and also in the trialling of new techniques. We use imaging techniques to investigate the degree of heterogeneity and the fabric of the Penrith Sandstone. Conventional optical images are complemented by electrical resistivity, porosity and mini-permeametry images. These two-dimensional maps of resolution of approximately 5 mm show a spatial similarity determined by the rock fabric. The detailed images show a wider degree of variation and heterogeneity than the plug-averaged values. The success of the resistivity imaging method suggests that the technique could be used in deriving correlations that could be used to interpret borehole resistivity imaging logs. However, in the present study, correlations of property values derived from the imaging do show considerable scatter: this suggests that heterogeneity even below the scale of the imaging is also important, a conclusion supported by thin-section and electronmicroscope data.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Publication Date: 2007-10-08
    Description: Using near-complete chemical analyses, computed thermal absorption cross-section values ({sigma}) are calculated for ocean-floor basalts from ODP Holes 896a and 1179D. Comparison with nuclear measurement of {sigma}, demonstrates that this computational method is valid and clarifies the interpretation of {sigma} in ocean-floor basalts. Boron, lithium and the rare-earth elements are important controls on the {sigma}-values, and, of these, the distribution of the rare-earth elements is controlled by primary magmatic processes, whereas the distribution of boron and lithium is strongly influenced by secondary low-temperature alteration processes. Consequently, computed {sigma}-values can be used to discriminate between various basalt types and to identify areas of secondary alteration. Following calibration of the fresh basalt' signature, it is possible to interpret log derived neutron absorption measurements of a sample ({Sigma}-values), which, when integrated with other log responses, allow the distribution of alteration within a drilled section to be mapped. Examples from ODP Hole 801C demonstrate the potential of this technique.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Publication Date: 2007-10-08
    Description: The neutron absorption macroscopic cross-section, {Sigma}, is measured routinely by neutron porosity tools and, although rarely presented as a logging curve in its own right, is used indirectly for the estimation of (neutron) porosity. One of the reasons that this primary measurement is not often employed directly in petrophysical analysis is the difficulty of interpretation. In particular, little is known about the range of {Sigma} values for common lithologies, or exactly what information the measurement is providing. In this contribution we demonstrate that excellent estimates of {Sigma} can be calculated, provided that the chemistry of a sample is known in sufficient detail. When applied to a range of geochemical reference materials, it becomes apparent that the minor and trace elements present may have a profound effect on the {Sigma} value of a sample, and, in turn, on the interpretation of neutron porosity measurements. Using this approach we present {Sigma} data for basaltic and ultrabasic rocks, and model the change in {Sigma} with alteration. Alteration is considered in these models as an increase in alteration minerals (which are mainly clays, but also carbonates and zeolites in basic rock alteration) and changes in the trace-element chemistry of the rocks. Of the trace elements, boron and some of the rare-earth elements are of particular importance. Modelling the variation in {Sigma} with these mineralogical and compositional changes indicates that increases in boron are the most important of these factors in increasing {Sigma}; this is enhanced by the alteration, particularly to clay phases, which generally accompanies an increase in boron. These models suggest that a {Sigma} log should be able to act as a proxy for alteration trends in basic and ultrabasic crystalline rocks, and a quantitative model for such alteration is described.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...