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  • ddc:548  (2)
  • Atlantischer Raum Nord  (1)
  • English  (3)
  • 2020-2023  (2)
  • 1980-1984  (1)
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  • 1
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    Variscan Tectonics of the North Atlantic Region (1984)
    Oxford, London, Edinburgh, Boston, Melbourne, Palo Alto : Blackwell Scientific Publications
    Details
    Keywords: Variszische Faltungsära ; Atlantischer Raum Nord ; Historische Geologie
    Description / Table of Contents: Mainland Europe --- K. Weber: Variscan events: early Palaeozoic continental rift metamorphism and late Palaeozoic crustal shortening / Geological Society, London, Special Publications, 14:3-22, doi:10.1144/GSL.SP.1984.014.01.02 --- R. Meissner, M. Springer, and E. Flüh: Tectonics of the Variscides in North-Western Germany based on seismic reflection measurements / Geological Society, London, Special Publications, 14:23-32, doi:10.1144/GSL.SP.1984.014.01.03 --- Wolfgang Franke: Late events in the tectonic history of the Saxothuringian zone / Geological Society, London, Special Publications, 14:33-45, doi:10.1144/GSL.SP.1984.014.01.04 --- J. P. Burg, Ph. Matte, A. Leyreloup, and J. Marchand: Inverted metamorphic zonation and large-scale thrusting in the Variscan Belt: an example in the French Massif Central / Geological Society, London, Special Publications, 14:47-61, doi:10.1144/GSL.SP.1984.014.01.05 --- Jean-Michel Quenardel and Patrick Rolin: Palaeozoic evolution of the Plateau d’Aigurande (NW Massif Central, France) / Geological Society, London, Special Publications, 14:63-70, doi:10.1144/GSL.SP.1984.014.01.06 --- S. C. Matthews: Northern margins of the Variscides in the North Atlantic region: comments on the tectonic context of the problem / Geological Society, London, Special Publications, 14:71-85, doi:10.1144/GSL.SP.1984.014.01.07 --- Britain --- M. P. Coward and S. Smallwood: An interpretation of the Variscan tectonics of SW Britain / Geological Society, London, Special Publications, 14:89-102, doi:10.1144/GSL.SP.1984.014.01.08 --- B. E. Leveridge, M. T. Holder, and G. A. Day: Thrust nappe tectonics in the Devonian of south Cornwall and the western English Channel / Geological Society, London, Special Publications, 14:103-112, doi:10.1144/GSL.SP.1984.014.01.09 --- T. J. Chapman, R. L. Fry, and P. T. Heavey: A structural cross-section through SW Devon / Geological Society, London, Special Publications, 14:113-118, doi:10.1144/GSL.SP.1984.014.01.10 --- J. W. F. Edwards: Interpretations of seismic and gravity surveys over the eastern part of the Cornubian platform / Geological Society, London, Special Publications, 14:119-124, doi:10.1144/GSL.SP.1984.014.01.11 --- Robert M. Shackleton: Thin-skinned tectonics, basement control and the Variscan front / Geological Society, London, Special Publications, 14:125-129, doi:10.1144/GSL.SP.1984.014.01.12 --- Russell S. Arthurton: The Ribblesdale fold belt, NW England—a Dinantian-early Namurian dextral shear zone / Geological Society, London, Special Publications, 14:131-138, doi:10.1144/GSL.SP.1984.014.01.13 --- M. F. Critchley: Variscan tectonics of the Alston block, northern England / Geological Society, London, Special Publications, 14:139-146, doi:10.1144/GSL.SP.1984.014.01.14 --- Ireland --- David J. Sanderson: Structural variation across the northern margin of the Variscides in NW Europe / Geological Society, London, Special Publications, 14:149-165, doi:10.1144/GSL.SP.1984.014.01.15 --- M. A. Cooper, D. Collins, M. Ford, F. X. Murphy, and P. M. Trayner: Structural style, shortening estimates and the thrust front of the Irish Variscides / Geological Society, London, Special Publications, 14:167-175, doi:10.1144/GSL.SP.1984.014.01.16 --- M. D. Max and J. P. Lefort: Does the Variscan front in Ireland follow a dextral shear zone? / Geological Society, London, Special Publications, 14:177-183, doi:10.1144/GSL.SP.1984.014.01.17 --- D. W. Coller: Variscan structures in the Upper Palaeozoic rocks of west central Ireland / Geological Society, London, Special Publications, 14:185-194, doi:10.1144/GSL.SP.1984.014.01.18 --- North America --- N. Rast: The Alleghenian orogeny in eastern North America / Geological Society, London, Special Publications, 14:197-217, doi:10.1144/GSL.SP.1984.014.01.19 --- Jean-Pierre Lefort and Richard T. Haworth: Geophysical evidence for the extension of the Variscan front on to the Canadian continental margin: geodynamic and palaeogeographic consequences / Geological Society, London, Special Publications, 14:219-231, doi:10.1144/GSL.SP.1984.014.01.20 --- Sharon Mosher and Nicholas Rast: The deformation and metamorphism of Carboniferous rocks in Maritime Canada and New England / Geological Society, London, Special Publications, 14:233-243, doi:10.1144/GSL.SP.1984.014.01.21 --- R. P. Wintsch and J.-P. Lefort: A clockwise rotation of Variscan strain orientation in SE New England and regional implications / Geological Society, London, Special Publications, 14:245-251, doi:10.1144/GSL.SP.1984.014.01.22 --- J. A. Brewer: Clues to the deep structure of the European Variscides from crustal seismic profiling in North America / Geological Society, London, Special Publications, 14:253-263, doi:10.1144/GSL.SP.1984.014.01.23
    Pages: Online-Ressource (IX, 270 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 063201203X
    URL: http://sp.lyellcollection.org/content/14/1
    Language: English
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    E-BOOK
  • 2
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    Sub‐micrometer focusing setup for high‐pressure crystallography at the Extreme Conditions beamline at PETRA III (2022)
    International Union of Crystallography | 5 Abbey Square, Chester, Cheshire CH1 2HU, England
    Details
    Publication Date: 2022-06-24
    Description: Scientific tasks aimed at decoding and characterizing complex systems and processes at high pressures set new challenges for modern X‐ray diffraction instrumentation in terms of X‐ray flux, focal spot size and sample positioning. Presented here are new developments at the Extreme Conditions beamline (P02.2, PETRA III, DESY, Germany) that enable considerable improvements in data collection at very high pressures and small scattering volumes. In particular, the focusing of the X‐ray beam to the sub‐micrometer level is described, and control of the aberrations of the focusing compound refractive lenses is made possible with the implementation of a correcting phase plate. This device provides a significant enhancement of the signal‐to‐noise ratio by conditioning the beam shape profile at the focal spot. A new sample alignment system with a small sphere of confusion enables single‐crystal data collection from grains of micrometer to sub‐micrometer dimensions subjected to pressures as high as 200 GPa. The combination of the technical development of the optical path and the sample alignment system contributes to research and gives benefits on various levels, including rapid and accurate diffraction mapping of samples with sub‐micrometer resolution at multimegabar pressures.
    Description: Facing the challenges of X‐ray diffraction from tiny samples subjected to multimegabar pressures, instrumentation developments are presented that enable, among other studies, single‐crystal data collection from micrometer‐ to sub‐micrometer‐sized grains. The developments are based on a sub‐micrometer beam capability employing compound refractive lenses operating with a phase correcting plate and a precise motorization solution.
    Keywords: ddc:548
    Language: English
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    CITATION GEO-LEO
  • 3
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    Robust approaches for model‐free small‐angle scattering data analysis (2022)
    Bender, Philipp ; Honecker, Dirk ; Bersweiler, Mathias ; [et al.]
    International Union of Crystallography | 5 Abbey Square, Chester, Cheshire CH1 2HU, England
    Details
    Publication Date: 2022-10-04
    Description: The small‐angle neutron scattering data of nanostructured magnetic samples contain information regarding their chemical and magnetic properties. Often, the first step to access characteristic magnetic and structural length scales is a model‐free investigation. However, due to measurement uncertainties and a restricted q range, a direct Fourier transform usually fails and results in ambiguous distributions. To circumvent these problems, different methods have been introduced to derive regularized, more stable correlation functions, with the indirect Fourier transform being the most prominent approach. Here, the indirect Fourier transform is compared with the singular value decomposition and an iterative algorithm. These approaches are used to determine the correlation function from magnetic small‐angle neutron scattering data of a powder sample of iron oxide nanoparticles; it is shown that with all three methods, in principle, the same correlation function can be derived. Each method has certain advantages and disadvantages, and thus the recommendation is to combine these three approaches to obtain robust results.
    Description: Three different approaches are compared for determination of the correlation function from the small‐angle neutron scattering data of a powder sample of iron oxide nanoparticles.
    Keywords: ddc:548
    Language: English
    Type: doc-type:article
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    CITATION GEO-LEO
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