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  • Analytical Chemistry and Spectroscopy  (4,318)
  • Organic Chemistry  (3,406)
  • Geochemie
  • Geodäsie
  • 1980-1984  (7,727)
Collection
Keywords
Publisher
Language
Years
Year
  • 1
    facet.materialart.
    Unknown
    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
    facet.materialart.
    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
    Unknown
    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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  • 4
    Electronic Resource
    Electronic Resource
    Neue Wege zu 1H- und 2H-Pyrrolen (1980)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 63 (1980), S. 658-663 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: New Routes to 1H- and 2H-PyrrolesA synthesis of 1H-pyrroles is described starting with pyridine analogues of chalcones and involving the reaction of acetic anhydride with 1-pyrroline-1-oxides. Another route leads from 1-pyrrolines to 2 H-pyrroles via bromination with N-bromosuccinimide and subsequent dehydrobromination in dimethylformamide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19800630313
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  • 5
    Electronic Resource
    Electronic Resource
    Erratum (1980)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 63 (1980), S. 681-681 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19800630317
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  • 6
    Electronic Resource
    Electronic Resource
    Nucleophilic addition to C,C double bonds. IIIFor Part I, see [1]; for Part II, see [2].. Chemical reactivity of 1endo, 4endo: 5exo, 8exo-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalen-10syn-ol and X-ray structure analysis of its p-nitrobenzoate (1980)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 63 (1980), S. 674-681 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The title compound 1 is a further example of an olefinic alcohol that undergoes ether formation under basic conditions (→ 3) although the double bond is not activated by an electron-attracting group. This unusual reactivity is due to steric compression, which is increased in the 10-methyl analogue 2. This forms the corresponding ether 7 at a much higher rate. - In a deuteriated medium, base-catalysed cyclization of 1 gives the exo-deuteriated ether 6, corresponding to trans-addition. - An X-ray structure analysis of 4, the p-nitrobenzoate of 1, is presented.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19800630316
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  • 7
    Electronic Resource
    Electronic Resource
    The Synthesis of β,γ- and α,β-Unsaturated Aldehydes via Polyene EpoxidesDedicated to Dr. O. Isler on the occasion of his 70th birthday (1980)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 63 (1980), S. 1665-1674 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A substitute for the Darzens glycidic ester synthesis for converting unsaturated ketones or aldehydes into the homologated β,γ- or α,β-unsaturated aldehydes employing sulfur ylides is described. The carbonyl group is converted into the unsaturated oxirane which is then rearranged to the new aldehyde. High yields of isomerically pure aldehydes are available by this method and the process is of practical importance in the conversion of β-ionone into the β-C14-aldehyde, a key intermediate in the Isler synthesis of vitamin A. The efficient preparation of α- and β-cyclocitral by the novel process is also described.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19800630636
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  • 8
    Electronic Resource
    Electronic Resource
    Globularifolin, A New Acyl Iridoid Glucoside from Globularia cordifoliaPart 3 in the series ‘Glycosides of Globulariaceae’. For parts 1 and 2 see [1] [2]. (1980)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 63 (1980), S. 117-120 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Six iridoid glucosides have been isolated from Globularia cordifolia by the combination of open column - and high performance liquid chromatography. The structure of the new compound, named globularifolin, and the identity of the others have been established by chemical transformations and spectral evidence of the compounds and their derivatives.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19800630112
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  • 9
    Electronic Resource
    Electronic Resource
    Photofragmentation of Dibenzyl Ketone in the Presence of Tetramethylpiperidine Derivatives. Studies on light stabilizer mechanisms [1] (1980)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 63 (1980), S. 132-147 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The interaction of selected tetramethylpiperidine derivatives with radicals arising from the Norrish-type I cleavage of dibenzyl ketone under oxygen was studied. Product analyses and kinetic studies showed that the investigated sterically hindered piperidine derivatives have a pronounced effect on both the nature and distribution of the products of photolysis of dibenzyl ketone in the presence of oxygen. Observations indicated that the phenylperacetoxyl radical is formed as an intermediate during irradiation and that it interacts with the additives used. Possible mechanisms of the reactions studied are discussed.The observation that oxidation of an isolated double bond by the radicals formed in dibenzyl ketone photolysis under oxygen is strongly inhibited in the presence of the studied sterically hindered amines is discussed in the light of the results presented. The findings are considered in relation to the problem of polymer stabilization.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19800630114
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  • 10
    Electronic Resource
    Electronic Resource
    Approaches to the Synthesis of Cytochalasans. Part 2. Pyrrolinone derivatives as basic unitsPart 1: [1].Part of the Ph.D. Thesis of T. Schmidlin, Basel 1979. (1980)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 63 (1980), S. 121-131 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Several attempts to prepare 3-acetyl-5-benzyl-3-pyrrolin-2-one (7) from phenylalanine are described. This goal was only reached formally, because compound 7 exists in the tautomeric form of (Z)-5-benzyl-3-(1′-hydroxyethylidene)-4-pyrrolin-2-one (17) according to the spectral data. The problem of tautomerism in pyrrolinone systems is discussed.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19800630113
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