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  • 2005-2009  (1)
  • 1985-1989  (7)
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  • 1
    Monograph available for loan
    Monograph available for loan
    Berlin [u.a.] : Springer
    Associated volumes
    Call number: 4/G 8841
    In: Lecture notes in earth sciences
    Type of Medium: Monograph available for loan
    Pages: X, 210 S. , Ill., graph. Darst, Kt.
    ISBN: 3540164944
    Series Statement: Lecture notes in earth sciences 6
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Unknown
    Berlin ; Heidelberg : Springer
    Description / Table of Contents: The study of calcareous bedding rhythms has become an important field in Geology. Often these bedding rhythms are simply interpreted as representations of primary climatic cycles without showing the effects of any appreciable diagenetic overprinting. This study, however, deals predominantly with the diagenetic processes which are usually large and affect both the amplitude and rhythm of carbonate oscillations. The purpose of this textbook is two fold. First, it intends to provide a better understanding of the processes of diagenetic bedding. Secondly, this new approach allows one to quantify and to understand diagenesis in terms of mass exchanges. This is possible through the development of methods which combine chemical data with compaction measurements. These methods can be also used independent of the marl-limestone alternation problem.
    Pages: Online-Ressource (210 Seiten)
    ISBN: 9783540164944
    Language: English
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 34 (1987), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Carbonate content, compaction, and porosity are evaluated from a large number of samples using micritic marl-limestone alternations from Germany, France, and Italy. Compaction is measured directly by utilizing both deformed, originally cylindrical bioturbation tubes and steinkerns of ammonites. Additionally, a method is developed to indirectly evaluate the total compaction of the rock matrix by using early, selectively cemented burrows and fossils. Plots representing measurements of compaction versus carbonate content display distinctly non-linear relationships which show increasing compaction with decreasing carbonate content. These relationships are found to clearly correspond with the carbonate compaction law. The compaction law is introduced as a theoretical derivation for sediments and rocks which calculates the carbonate and non-carbonate content, compaction, and porosity. It is based on the assumption that the non-carbonate fraction standardized to the primary sediment-volume remains constant during carbonate diagenesis. The compaction law is used to calculate the most commonly found sediment/rock transformations (e.g. mechanical compaction, cementation, and chemical compaction) and to simulate the diagenetic processes of given examples.Decompaction formulas are developed to evaluate the porosity and carbonate content of the primary sediment. An example of calculating decompaction and determining the original composition of the sediment is given utilizing carbonates spanning the Cretaceous-Tertiary boundary at Gubbio (Italy).
    Type of Medium: Electronic Resource
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  • 4
    Publication Date: 2005-04-01
    Print ISSN: 0037-0738
    Electronic ISSN: 1879-0968
    Topics: Geosciences
    Published by Elsevier
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  • 5
    Publication Date: 1987-08-01
    Print ISSN: 0037-0746
    Electronic ISSN: 1365-3091
    Topics: Geosciences
    Published by Wiley
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  • 6
    Publication Date: 1988-01-01
    Description: Die jungpleistozäne Sedimentserie des Aschenhütter Erdfalls (südlicher Harzrand, Niedersachsen) bietet die interessante Möglichkeit, palynologische und geologische Befunde miteinander zu verknüpfen. Die Sedimentserie besteht aus limnischen und telmatischen Ablagerungen und Lößderivaten mit eem- und weichselzeitlichen Paläoböden. Die limnisch-telmatischen Sedimente umfassen nach dem pollenanalytischen Befund die Hainbuchenzeit und die darauffolgenden Abschnitte des Eem-Interglazials, das Brörup-Interstadial (sensu Andersen) und Teile der diesem vorausgehenden bzw. folgenden Stadiale (Herning-bzw. Rederstall-Stadial). Anders als an den meisten eemzeitlichen Untersuchungspunkten, die fast alle in den ehemals vereisten Tieflandsgebieten liegen, war die Fichte am Harzrand schon während der Hainbuchenzeit eine der wichtigen Baumarten. Die interstadiale Vegetationsentwicklung läßt keinen Klimarückschlag erkennen, wie er in Gegenden mit einer thermisch anspruchsvolleren Vegetation oder nahe an den Verbreitungsgrenzen der einzelnen Baumarten im Brörup-Interstadial gewöhnlich deutlich wird. Die botanischen Untersuchungen ergaben auch keine Hinweise auf ein Vorkommen von Bruckenthalia und Picea omoricoides bei Aschenhütte. Die pollenanalytisch datierte limnisch-telmatische Sedimentfolge verzahnt sich mit Lößpaläoböden und ermöglicht deren stratigraphische Einordnung. Die pollenführenden Sedimente gehen im Uferbereich in den Eem-Boden und in frühweichselzeitliche Bleichhorizonte und Fließerden über; im Hangenden treten Lößböden des Stillfried-B-Interstadials auf (Hattorfer und Lohner Boden der mittleren Weichselzeit). Die Untersuchungen zur Faziesverteilung der Sedimente und zum Auftreten von Wasserpflanzen erlauben Aussagen über Spiegelschwankungen des Aschenhütter Sees. Spiegelhöchststände wurden nach dem Ende des Eem-Interglazials und während des Brörup-Interstadials erreicht. Dagegen sank der Wasserspiegel im Verlauf des Herning-Stadials, und im Rederstall-Stadial verlandete der Aschenhütter See. Die Spiegelschwankungen werden mit Niederschlags- und Verdunstungsänderungen als Folge von Klimaschwankungen erklärt.
    Print ISSN: 0424-7116
    Electronic ISSN: 2199-9090
    Topics: Geosciences , History
    Published by Copernicus on behalf of Deutsche Quartärvereinigung.
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  • 7
    Publication Date: 2023-11-01
    Keywords: Abies; Acer; Alnus; Anemone-type; Apiaceae; Armeria; Artemisia; Aschenhütte; Asteraceae; Batrachium; Betula; Boraginaceae; Botrychium; Botryococcus; Brassicaceae; Calluna; Caltha; Campanula; Carpinus; Caryophyllaceae; Centaurea cyanus-type; Centaurea jacea-type; Centaurea montana-type; Centaurea scabiosa-type; Chenopodiaceae; Cichoriaceae; Corylus; Counting, palynology; Cyperaceae; Daphne; DEPTH, sediment/rock; Dipsacaceae; EDEA; Edelman auger; Empetrum; Ephedra distachya-type; Ephedra fragilis-type; Epilobium; Equisetum; Ericaceae; Euphorbia; Fabaceae; Fagus; Filipendula; Fraxinus; Geologic age name; Geranium; Gypsophila; H77; Hedera; Helianthemum; Hippophae; Ilex; Indeterminata; Iris-type; Juniperus; Knautia; Larix; Lonicera xylosteum-type; Lower Saxony, Northern Germany; Lycopodium cf. alpinum; Lycopodium cf. annotinum; Lycopodium cf. clavatum; Lycopodium selago; Lycopodium sp.; Lysimachia vulgaris-type; Melampyrum; Mentha-type; Menyanthes; Myriophyllum; Osmunda; Pediastrum simplex; Pediastrum sp.; Picea; Pinus; Plantago lanceolata-type; Plantago major/media-type; Plantago sp.; Poaceae; Pollen zone; Polygonum bistorta-type; Polygonum persicaria-type; Polypodiaceae; Polypodium; Populus; Pre-Quaternary sporomorphs; Pteridium; Quercus; Ranunculus; Rhamnus frangula; Rosaceae; Rubiaceae; Rumex; Salix; Sample code/label; Sanguisorba officinalis; Scrophulariaceae; Selaginella selaginoides; Sparganium-type; Sphagnum; Symphytum; Taxus; Thalictrum; Tilia; Trifolium-type; Typha latifolia-type; Ulmus; Urtica; Valeriana officinalis-type; Varia; Viburnum; Viscum; Vitis
    Type: Dataset
    Format: text/tab-separated-values, 8404 data points
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  • 8
    Publication Date: 2023-07-10
    Keywords: Alisma; Alnus, wood; Aschenhütte; Betula alba, fruit scales; Betula sp., fruits; Betula sp., fruit scales; Carex canescens; Carex elongata; Carex indeterminata; Carex pseudocyperus; Carex rostrata; Caryophyllaceae, seeds; Cenococcum geophilum, sclerotia; cf. Picea, bud scales; cf. Picea, seeds; cf. Picea, wood; cf. Schoenoplectus lacustris; Cladium mariscus; Counting, palynology; deciduous tree species, wood; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EDEA; Edelman auger; Geologic age name; H77; Hippuris vulgaris; Juniperus cf. communis, seeds; Lower Saxony, Northern Germany; Picea, needles; Pollen zone; Populus, bud scales; Potamogeton berchtoldii; Potamogeton natans; Potamogeton sp.; Potentilla palustris; Ranunculus flammula; Ranunculus repens; Ranunculus sceleratus; Ranunculus sect. Batrachium; Rubus idaeus; Sambucus cf. nigra; Scirpus emerum; Scirpus sylvaticus/radicans; Sparganium emersum; Sphagnum palustre, leaves; Sphagnum sect. Acutifolia, leaves; Typha
    Type: Dataset
    Format: text/tab-separated-values, 3402 data points
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