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  • 1
    Publication Date: 1968-01-01
    Print ISSN: 0012-8252
    Electronic ISSN: 1872-6828
    Topics: Geography , Geosciences
    Published by Elsevier
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  • 2
    Publication Date: 1968-03-01
    Print ISSN: 0037-0746
    Electronic ISSN: 1365-3091
    Topics: Geosciences
    Published by Wiley
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 10 (1968), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Indices based on Wentworth phi values of Q1, Md and Q3 are used for textural classification of sediments. Wentworth phi values enable a detailed subdivision. A nomenclature based on the Wentworth phi indices is developed. The indices, and to a smaller degree the names, show sorting and skewness based on integer phi units. The classification scheme gives a continuous scale from gravel to fine clay. The Q1MdQ3-indices can be used for distinction of river, marine and loess deposits. The addition of indices of the 1st and 99th percentile, giving 5-digit indices, augments the possibilities for a determination of the environment: river deposits can be distinguished from beach and dune sediments and in more detail from shallow marine and coastal deposits. The indices can be handled by data-processing machines.
    Type of Medium: Electronic Resource
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  • 4
    facet.materialart.
    Unknown
    In:  Leidse Geologische Mededelingen (0075-8639) vol.20 (1955) nr.1 p.34
    Publication Date: 2014-10-27
    Description: During the Fall of 1945 the author measured daily the micro-topography of a beach profile at Zandvoort, the Netherlands. The daily changes and the movements of the beach ridges have been determined. Several beach ridges came into being and were destroyed during storms. The structure of the deposits has been studied.
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
    Format: application/pdf
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  • 5
    facet.materialart.
    Unknown
    In:  Leidse Geologische Mededelingen vol. 20 no. 1, pp. 34-47
    Publication Date: 2024-01-12
    Description: During the Fall of 1945 the author measured daily the micro-topography of a beach profile at Zandvoort, the Netherlands. The daily changes and the movements of the beach ridges have been determined. Several beach ridges came into being and were destroyed during storms. The structure of the deposits has been studied.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 6
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    In:  Leidse Geologische Mededelingen vol. 3 no. 1, pp. 335-396
    Publication Date: 2024-01-12
    Description: Im Zusammenhang mit der von mir vorgenommenen Kartierung des \xc3\xb6stlichen Teiles des Luganer Porphyrgebiets machte ich im Herbste 1927 mit Herrn Prof. Dr. B. G. Escher und Herrn Dr. Kuenen eine kurze Studienreise nach dem Monte Arbostora, hierauf, w\xc3\xa4hrend zwei Wochen, Wanderungen \xc3\xbcber den Monte San Giorgio und in der Umgebung des Val Mara. Bereits auf diesen Wanderungen beobachtete ich zalhreiche interessante Tatsachen, die noch auf eine Erkl\xc3\xa4rung warteten.\nDas Problem der Quarzporphyrg\xc3\xa4nge unterhalb Rovio wird in der Literatur wiederholt erw\xc3\xa4hnt, jedoch nur von Kaech (Lit. 15, S. 133) ausf\xc3\xbchrlich beschrieben.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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