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  • 1
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    Zur Geologie des Dakhla-Beckens (Südwest-Ägypten) (1982)
    Reimer
    In:  Herausgeberexemplar
    Details
    Publication Date: 2024-07-02
    Description: Über den paläozoischen Sedimenten im Dakhla-Becken folgen überwiegend fluvio-kontinentale Sedimente des Mesozoikums, die sich aufgrund ihrer gleichartigen Ausbildung innerhalb des Beckens in Ost-West-Erstreckung verfolgen lassen. Die pauschal als "Nubischer Sandstein" bezeichneten klastischen Sedimente konnten in sechs Formationen gegliedert und ihre strati graphische Stellung weitgehend gesichert werden. Die Einheiten der Nubischen Gruppe heißen von unten nach oben: Six Hills Formation (Basal Clastics), Abu Ballas Formation (Lingula Shale), Sabaya Formation (Desert Rose Beds), Maghrabi Formation (Plant Beds), Taref Formation (Taref Sandstein) und Mut Formation (Variegated Shales). Sie sind fast ausschließlich der Kreide bis zum Maastricht zugehörig. Der Sedimentationsraum gehört zu einem sich nach Nordwesten vertiefenden Becken zwischen der Calanscio-Uweinat-Schwelle im Westen und dem Kharga-Upl ift im Osten. Die Sandstein-Formationen bestehen in der Körnerfraktion ausschließlich aus Quarz, Zirkon, Turmalin, Rutil und Leukoxen und zeigen bei den Tonmineralen eine absolute Kaolinitvormacht. Die überwiegend tonigen Formationen, mit unterschiedlichen Tonmineral-Vergesellschaffungen, deuten auf eine Sedimentation in einem flachen Epikontinentalmeer hin. Die Sedimente der Nubischen Gruppe entstammen Gebieten mit lateritischer Verwitterung. Die Resedimentation erfolgte unter gleichen Klimabedingungen, wie synsedimentäre Bodenbildung und Sesquioxid-Krusten zeigen. Die Faktoren-Analyse ergab folgende Elementgruppen: Ti, Nb, Zr und Cr: Elemente, die überwiegend in Schwermineralen auftreten ; Mn, Co, Ni und Cu: adsorptiv an Mn gebunden und in manganreichen Krusten angereichert ; Y, SE; an Tonminerale angelagerte Elemente ; Ca, Sr, Rb und Pb: an Tonminerale gebundene Elemente. Eisen konnte keiner dieser Gruppen zugeordnet werden. Da die fünf Elementgruppen in den Formationen der Nubischen Gruppe charakteristisch verteilt sind, ist eine Unterscheidung der Formationen aufgrund der Elementverteilung möglich.
    Description: The Paleozoic sediments within the Dakhla Basin are overlain by fluvio-continental sediments of Mesozoic age which can be traced in the. basin in east-west extension caused by their similar development. The clastic sediments, generally called "Nubian Sandstone", could be subdivided into six formations and their: stratigraphic position could be more or less assured. The units of the Nubia Group are named from the bottom towards the top as follows: Six Hills Formation (Basal Clastic Unit), Abu Ballas Formation (Lingula Shale Unit), Sabaya Formation (Desert Rose Unit), Maghrabi Formation (Plant Bed Unit), Taref Formation (Taref Sandstone Unit), and Mut Formation (Variegated Shale Unit). Stratigraphically they are nearly exclusively of Cretaceous up to Maastrichtian age. The area of sedimentation is a basin between the Calanscio-Uweinat Uplift in the west and the Kharga Uplift in the east. The bottom of the basin dips towards the northwest. The more sandy units contain as grains exclusively quartz, zircone, turmaline, rutile and leocoxene. The same units show as a clay-mineral an absolute predominance of kaolinite. The chiefly clayey units with a different association of clayminerals point at a sedimentation in a shallow epicontinental sea. The sediments of the Nubia Group are descended from regions with a lateritic weathering. The resedimentation took place under the same climatic conditions as it is shown by syn sedimentary development of soil horizons and sesquioxide crusts. The factor analysis caused the following groups of elements: Ti, Nb, Zr and Cr: elements which occur mainly in heavy minerals ; Mn, Co, Ni and Cu: elements which are bound adsorptively at Mn and are concentrated in crusts with a high content of manganese ; Y and R.E.E.: elements which are attached to clayminerals ; Ca, Sr, Rb and Pb: elements which are bound at clayminerals. Iron could not be associated with one of these groups. As the five groups of elements are distributed characteristically in the units of the Nubia Group, a differentiation of the units is possible based on the dissamination of the elements.
    Description: thesis
    Description: DFG, SUB Göttingen
    Keywords: ddc:551 ; Nubischer Sandstein ; Stratigraphie ; Geochemie ; Sedimentologie
    Language: German
    Type: doc-type:book
    Format: 93
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    CITATION GEO-LEO
  • 2
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    Unknown
    Zur Geochemie von Migmatiten (1980)
    Berlin: Reimer
    In:  Herausgeberexemplar
    Details
    Publication Date: 2024-04-18
    Description: Anatektische Schmelzen haben bei der Entstehung granitischer bis dioritischer Magmen in der Erdkruste eine entscheidende Bedeutung. Die große Tiefe und breite Ausdehnung, in der sich sialische Granitisations-Prozesse vollziehen, bedingen aber auch die Seltenheit ihres Aufschlusses an der Erdoberfläche. An Stelle dieser Übergänge metamorph -〉 magmatisch in situ (ERDMANNSDÖRFFER, 1948) wurden daher stets die wesentlich kleinräumigeren Erscheinungen in Migmatiten untersucht. Man ging dabei von der Voraussetzung aus, daß diese als "Modell Systeme" anzusehen sind (MEHNERT, 1968/71). Die meisten geochemischen Untersuchungen zu diesem Thema berücksichtigten bisher nur die Hauptelemente. Angaben über Spurenelement-Konzentrationen basieren meist nur auf wenigen Einzelanalysen. Als Grundlage der hier vorgelegten Zusammenfassung geochemischer Daten zur Migmatitgenese dienten im wesentlichen die petrologischen Untersuchungen anatektischer Gesteine von MEHNERT und von BÜSCH (Zitate im Text). Diese Basis wurde durch Hinzunahme von neueren Literaturdaten erweitert. Die Analyse einer möglichst großen Anzahl von Einzelproben von Gneisen, Leukosomen und Melanosomen auf Haupt-, Neben- und Spurenelemente und die Berücksichtigung der Auswirkungen der Streuungen erbrachte neue Erkenntnisse…
    Description: thesis
    Description: DFG, SUB Göttingen
    Keywords: ddc:552.4 ; ddc:551.9 ; Geochemie ; Migmatit ; Schwarzwald
    Language: German
    Type: doc-type:book
    Format: 82
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    CITATION GEO-LEO
  • 3
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    Petroleum Geochemistry and Exploration of Europe (1983)
    Oxford, London, Edinburgh, Boston, Melbourne : Blackwell Scientific Publications
    Details
    Keywords: Erdöl ; Europa ; Geochemie
    Description / Table of Contents: J. Brooks: Introduction / Geological Society, London, Special Publications, 12:ix-xv, doi:10.1144/GSL.SP.1983.012.01.01 --- Geological and Geochemical Studies of Northwest European Continental Shelf --- P. J. Walmsley: The role of the Department of Energy in petroleum exploration of the United Kingdom / Geological Society, London, Special Publications, 12:3-10, doi:10.1144/GSL.SP.1983.012.01.02 --- A. Makourine: Gas Exploration and Reserves in Europe / Geological Society, London, Special Publications, 12:11-17, doi:10.1144/GSL.SP.1983.012.01.03 --- P. C. Barnard and B. S. Cooper: A Review of Geochemical Data Related to the Northwest European Gas Province / Geological Society, London, Special Publications, 12:19-33, doi:10.1144/GSL.SP.1983.012.01.04 --- J. L. Gevirtz, B. D. Carey, and S. R. Blanco: Surface Geochemical Exploration in the North Sea / Geological Society, London, Special Publications, 12:35-50, doi:10.1144/GSL.SP.1983.012.01.05 --- E. Faber and W. Stahl: Analytic Procedure and Results of an Isotope Geochemical Surface Survey in an Area of the British North Sea / Geological Society, London, Special Publications, 12:51-63, doi:10.1144/GSL.SP.1983.012.01.06 --- J. Sigalove: Petroleum Offshore Sniffer Exploration / Geological Society, London, Special Publications, 12:65, doi:10.1144/GSL.SP.1983.012.01.07 --- G. J. Candy: Petroleum Exploration Onshore U.K. / Geological Society, London, Special Publications, 12:67-68, doi:10.1144/GSL.SP.1983.012.01.08 --- T. P. Brennand: North Sea petroleum exploration / Geological Society, London, Special Publications, 12:69, doi:10.1144/GSL.SP.1983.012.01.09 --- Hans Rønnevik, Svein Eggen, and Jan Vollset: Exploration of the Norwegian Shelf / Geological Society, London, Special Publications, 12:71-93, doi:10.1144/GSL.SP.1983.012.01.10 --- D. C. Mudge and G. M. Bliss: Stratigraphy and Sedimentation of the Palaeocene Sands in the Northern North Sea / Geological Society, London, Special Publications, 12:95-111, doi:10.1144/GSL.SP.1983.012.01.11 --- C. D. Curtis: Geochemistry of Porosity Enhancement and Reduction in Clastic Sediments / Geological Society, London, Special Publications, 12:113-125, doi:10.1144/GSL.SP.1983.012.01.12 --- Hilary Irwin and Andrew Hurst: Applications of Geochemistry to Sandstone Reservoir Studies / Geological Society, London, Special Publications, 12:127-146, doi:10.1144/GSL.SP.1983.012.01.13 --- M. J. Pearson and D. Watkins: Organofacies and Early Maturation Effects in Upper Jurassic Sediments From the Inner Moray Firth Basin, North Sea / Geological Society, London, Special Publications, 12:147-160, doi:10.1144/GSL.SP.1983.012.01.14 --- M. J. Pearson, D. Watkins, J-L Pittion, D. Caston, and J. S. Small: Aspects of Burial Diagenesis, Organic Maturation and Palaeothermal History of an Area in the South Viking Graben, North Sea / Geological Society, London, Special Publications, 12:161-173, doi:10.1144/GSL.SP.1983.012.01.15 --- C. Cornford, J. A. Morrow, A. Turrington, J. A. Miles, and J. Brooks: Some Geological Controls on Oil Composition in the U.K. North Sea / Geological Society, London, Special Publications, 12:175-194, doi:10.1144/GSL.SP.1983.012.01.16 --- M. J. Fisher and Jennifer A. Miles: Kerogen Types, Organic Maturation and Hydrocarbon Occurrences in the Moray Firth and South Viking Graben, North Sea Basin / Geological Society, London, Special Publications, 12:195-201, doi:10.1144/GSL.SP.1983.012.01.17 --- R. H. Reitsema: Geochemistry of North and South Brae Areas, North Sea / Geological Society, London, Special Publications, 12:203-212, doi:10.1144/GSL.SP.1983.012.01.18 --- A. E. Griffith: The Search for Petroleum in Northern Ireland / Geological Society, London, Special Publications, 12:213-222, doi:10.1144/GSL.SP.1983.012.01.19 --- D. G. Roberts: Frontier exploration in Western and Northwest Europe / Geological Society, London, Special Publications, 12:223-224, doi:10.1144/GSL.SP.1983.012.01.20 --- Petroleum Exploration of Europe --- L. Mattavelli, T. Ricchiuto, D. Grighani, and M. Schoell: Origins of Natural Gas in the Po Valley, N. Italy / Geological Society, London, Special Publications, 12:227, doi:10.1144/GSL.SP.1983.012.01.21 --- M. Schoell and M. J. Whiticar: Isotope Geochemistry of Natural Gases in Central Europe / Geological Society, London, Special Publications, 12:229, doi:10.1144/GSL.SP.1983.012.01.22 --- K. Kuckelkorn, H. Wehner, and H. Hufnagel: Geochemical Observations and Oil Genesis in the German Alps and their foreland / Geological Society, London, Special Publications, 12:231-233, doi:10.1144/GSL.SP.1983.012.01.23 --- D. P. McKenzie: Basin Evolution and Hydrocarbon Generation / Geological Society, London, Special Publications, 12:253-254, doi:10.1144/GSL.SP.1983.012.01.25 --- B. Durand and M. Paratte: Oil Potential of Coals: A Geochemical Approach / Geological Society, London, Special Publications, 12:255-265, doi:10.1144/GSL.SP.1983.012.01.26 --- P. A. Schenck, J. W. de Leeuw, T. C. Viets, and J. Haverkamp: Pyrolysis-Mass Spectrometry in Coal Chemistry: a study of the coalification of vitrites and the typification of Australian Brown Coals / Geological Society, London, Special Publications, 12:267-274, doi:10.1144/GSL.SP.1983.012.01.27 --- D. J. Batten: Identification of Amorphous Sedimentary Organic Matter by Transmitted Light Microscopy / Geological Society, London, Special Publications, 12:275-287, doi:10.1144/GSL.SP.1983.012.01.28 --- P. M. R. Smith: Spectral Correlation of Spore Coloration Standards / Geological Society, London, Special Publications, 12:289-294, doi:10.1144/GSL.SP.1983.012.01.29 --- J. M. A. Buiskool Toxopeus: Selection Criteria for the Use of Vitrinite Reflectance as a Maturity Tool / Geological Society, London, Special Publications, 12:295-307, doi:10.1144/GSL.SP.1983.012.01.30 --- A. J. G. Barwise: Use of Porphyrins as a Maturity Parameter for Oils and Sediments / Geological Society, London, Special Publications, 12:309-315, doi:10.1144/GSL.SP.1983.012.01.31 --- Petroleum Geochemical Principles and Techniques --- D. H. Welte, M. A. Yükler, M. Radke, D. Leythaeuser, U. Mann, and U. Ritter: Organic Geochemistry and Basin Modelling — Important Tools in Petroleum Exploration / Geological Society, London, Special Publications, 12:237-252, doi:10.1144/GSL.SP.1983.012.01.24 --- Geological Information on Hydrocarbon Exploration on the U.K. Continental Shelf --- G. G. Baxter: Introduction / Geological Society, London, Special Publications, 12:319, doi:10.1144/GSL.SP.1983.012.01.32 --- D. J. McKay: The Compilation of an Earth Science Bibliography for the North Sea and Adjacent Areas / Geological Society, London, Special Publications, 12:321-328, doi:10.1144/GSL.SP.1983.012.01.33 --- P. Wigley: Commercially Available Geological Databanks—U.K.C.S. / Geological Society, London, Special Publications, 12:329-341, doi:10.1144/GSL.SP.1983.012.01.34 --- J. R. V. Brooks: Geological Information from Hydrocarbon Exploration on the United Kingdom Continental Shelf / Geological Society, London, Special Publications, 12:343-356, doi:10.1144/GSL.SP.1983.012.01.35 --- K. J. Chew and H. Stephenson: EXPHST—A Program to Analyse the History of Exploration Success within a Basin or Country / Geological Society, London, Special Publications, 12:357-371, doi:10.1144/GSL.SP.1983.012.01.36 --- G. G. Baxter: The Use of Computerized Information in Britoil, Exploration Division / Geological Society, London, Special Publications, 12:373, doi:10.1144/GSL.SP.1983.012.01.37
    Pages: Online-Ressource (XV, 379 Seiten)
    ISBN: 0632010762
    URL: http://sp.lyellcollection.org/content/12/1
    Language: English
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