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  • 1
    In: Paleoceanography, Hoboken, NJ : Wiley, 1986, 24(2009), 1944-9186
    In: volume:24
    In: year:2009
    In: extent:15
    Materialart: Online-Ressource
    Seiten: 15 , graph. Darst
    ISSN: 1944-9186
    Sprache: Englisch
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  • 2
    In: Marine micropaleontology, New York, NY [u.a.] : Elsevier, 1976, 66(2008), 3/4, Seite 208-221
    In: volume:66
    In: year:2008
    In: number:3/4
    In: pages:208-221
    Materialart: Online-Ressource
    Seiten: Ill., graph. Darst
    Sprache: Englisch
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  • 3
    Online-Ressource
    Online-Ressource
    [s.l.] : Wiley-Blackwell
    Schlagwort(e): Benthos ; Marine organisms ; Foraminifera
    Beschreibung / Inhaltsverzeichnis: Deep-sea benthic foraminifera have played a central role in biostratigraphic, paleoecological, and paleoceanographical research for over a century. These single-celled marine protists are important because of their geographic ubiquity, distinction morphologies and rapid evolutionary rates, their abundance and diversity deep-sea sediments, and because of their utility as indicators of environmental conditions both at and below the sediment-water interface. In addition, stable isotopic data obtained from deep-sea benthic foraminiferal tests provide paleoceanographers with environmental information that is proving to be of major significance in studies of global climatic change. This work collects together, for the first time, new morphological descriptions, taxonomic placements, stratigraphic occurrence data, geographical distribution summaries, and palaeoecological information, along with state-of-the-art colour photomicrographs (most taken in reflected light, just as you would see them using light microscopy), of 300 common deep-sea benthic foraminifera species spanning the interval from Jurassic - Recent. This volume is intended as a reference and research resource for post-graduate students in micropalaeontology, geological professionals (stratigraphers, paleontologists, paleoecologists, palaeoceanographers), taxonomists, and evolutionary (paleo)biologists
    Materialart: Online-Ressource
    Seiten: Online Ressource (23659 KB, 656 S.)
    Ausgabe: 1. Aufl.
    ISBN: 1118389808 , 1118452518 , 9781118452516
    Sprache: Englisch
    Anmerkung: Includes bibliographical references (p. 620-632) and indexes
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  • 4
    Online-Ressource
    Online-Ressource
    Newark :John Wiley & Sons, Incorporated,
    Schlagwort(e): Foraminifera. ; Electronic books.
    Materialart: Online-Ressource
    Seiten: 1 online resource (656 pages)
    Ausgabe: 1st ed.
    ISBN: 9781118452523
    DDC: 578.77/7
    Sprache: Englisch
    Anmerkung: Cover -- Title page -- Copyright page -- Contents -- Acknowledgements -- Introduction -- Atlas of Benthic Foraminifera -- Abyssamina poagi Schnitker and Tjalsma, 1980 -- Abyssamina quadrata Schnitker and Tjalsma, 1980 -- Alabamina creta (Finlay), 1940 -- Alabamina dissonata (Cushman and Renz), 1948 -- Ammoanita ingerlisae Gradstein and Kaminski, 1997 -- Ammobaculites agglutinans (d'Orbigny), 1846 -- Ammobaculites jarvisi Cushman and Renz, 1946 -- Ammobaculoides carpathicus Geroch, 1966 -- Ammodiscus infimus Franke, 1936 -- Ammodiscus latus Grzybowski, 1898 -- Ammodiscus pennyi Cushman and Jarvis, 1928 -- Ammodiscus tenuis (Brady), 1881 -- Ammolagena clavata (Jones and Parker), 1860 -- Amphicoryna scalaris (Batsch), 1791 -- Annectina biedai Gradstein and Kaminski, 1997 -- Annectina grzybowskii (Jurkiewicz), 1960 -- Anomalinella rostrata (Brady), 1881 -- Anomalinoides capitatus (Gümbel), 1868 -- Anomalinoides globulosus (Chapman and Parr), 1937 -- Anomalinoides rubiginosus (Cushman), 1926 -- Anomalinoides semicribratus (Beckmann), 1954 -- Aragonia aragonensis (Nuttall), 1930 -- Aragonia velascoensis (Cushman), 1925 -- Astrononion stelligerum (d'Orbigny), 1839 -- Bigenerina nodosaria d'Orbigny, 1826 -- Bolivina decussata Brady, 1881 -- Bolivina huneri Howe, 1939 -- Bolivinita quadrilatera (Schwager), 1866 -- Bolivinoides delicatulus Cushman, 1927 -- Bolivinoides draco (Marsson), 1878 -- Brizalina alata (Seguenza), 1862 -- Brizalina aliformis (Cushman), 1926 -- Brizalina antegressa (Subbotina), 1953 -- Brizalina subaenariensis var. mexicana (Cushman), 1922 -- Brizalina subspinescens (Cushman), 1922 -- Bulbobaculites problematicus (Neagu), 1962 -- Bulimina aculeata d'Orbigny, 1826 -- Bulimina alazanensis Cushman, 1927 -- Bulimina callahani Galloway and Morrey, 1931 -- Bulimina elongata d'Orbigny, 1846 -- Bulimina gibba Fornasini, 1902. , Bulimina glomarchallengeri Tjalsma and Lohmann, 1983 -- Bulimina impendens Parker and Bermúdez, 1937 -- Bulimina jacksonensis Cushman, 1925 -- Bulimina jarvisi Cushman and Parker, 1936 -- Bulimina macilenta Cushman and Parker, 1939 -- Bulimina marginata d'Orbigny, 1826 -- Bulimina mexicana Cushman, 1922 -- Bulimina midwayensis Cushman and Parker, 1936 -- Bulimina rostrata Brady, 1884 -- Bulimina semicostata Nuttall, 1930 -- Bulimina taylorensis Cushman and Parker, 1935 -- Bulimina thanetensis Cushman and Parker, 1947 -- Bulimina trinitatensis Cushman and Jarvis, 1928 -- Bulimina tuxpamensis Cole, 1928 -- Bulimina velascoensis (Cushman), 1925 -- Buliminella beaumonti Cushman and Renz, 1946 -- Buliminella grata Parker and Bermúdez, 1937 -- Buzasina galeata (Brady), 1881 -- Cancris auriculus (Fichtel and Moll), 1798 -- Cancris nuttalli (Palmer and Bermúdez), 1936 -- Cassidulina teretis Tappan, 1951 -- Cassidulinoides parkerianus (Brady), 1881 -- Caudammina excelsa (Dylàzanka), 1923 -- Caudammina gigantea (Geroch), 1960 -- Caudammina ovula (Grzybowski), 1896 emend. Geroch, 1960 -- Chilostomella oolina Schwager, 1878 -- Chrysalidinella dimorpha (Brady), 1881 -- Cibicides lobatulus (Walker and Jacob), 1798 -- Cibicides refulgens de Montfort, 1808 -- Cibicidina walli Bandy, 1949 -- Cibicidoides alazanensis (Nuttall), 1932 -- Cibicidoides barnetti (Bermúdez), 1949 -- Cibicidoides bradyi (Trauth) 1918 -- Cibicidoides cicatricosus (Schwager), 1866 -- Cibicidoides compressus (Cushman and Renz), 1941 -- Cibicidoides crebbsi (Hedberg), 1937 -- Cibicidoides dohmi (Bermúdez), 1949 -- Cibicidoides eocaenus (Gümbel), 1868 -- Cibicidoides grimsdalei (Nuttall), 1930 -- Cibicidoides grosseperforatus van Morkhoven and Berggren, 1986 -- Cibicidoides guazumalensis (Bermúdez), 1949 -- Cibicidoides havanensis (Cushman and Bermúdez), 1937. , Cibicidoides hyphalus (Fisher), 1969 -- Cibicidoides incrassatus (Fichtel and Moll), 1798 -- Cibicidoides lamontdohertyi Miller and Katz, 1987 -- Cibicidoides laurisae (Mallory), 1959 -- Cibicidoides matanzasensis (Hadley), 1934 -- Cibicidoides mexicanus (Nuttall), 1932 -- Cibicidoides micrus (Bermúdez), 1949 -- Cibicidoides mundulus (Brady, Parker, and Jones), 1888 -- Cibicidoides pachyderma (Rzehak), 1886 -- Cibicidoides praemundulus Berggren and Miller, 1986 -- Cibicidoides robertsonianus (Brady), 1881 -- Cibicidoides subhaidingerii (Parr), 1950 -- Cibicidoides subspiratus (Nuttall), 1930 -- Cibicidoides velascoensis (Cushman), 1925 -- Cibicorbis hitchcockae (Galloway and Wissler), 1927 -- Clavulinoides aspera (Cushman), 1926 -- Conotrochammina voeringensis Gradstein and Kaminski, 1997 -- Coryphostoma incrassata (Reuss), 1851 -- Coryphostoma midwayensis (Cushman), 1936 -- Cribrostomoides subglobosus (Cushman), 1910 -- Cyclammina cancellata Brady, 1879 -- Cyclammina pusilla Brady, 1881 -- Cystammina pauciloculata (Brady), 1879 -- Cystammina sveni Gradstein and Kaminski, 1997 -- Discorbinella bertheloti (d'Orbigny), 1839 -- Eggerella bradyi (Cushman), 1911 -- Ehrenbergina hystrix Brady, 1881 -- Elphidium crispum (Linnaeus), 1758 -- Elphidium macellum (Fichtel and Moll), 1798 -- Epistominella exigua (Brady), 1884 -- Eratidus foliaceus (Brady), 1881 -- Eubuliminella exilis (Brady), 1884 -- Evolutinella vocontianus (Moullade), 1966 -- Favocassidulina favus (Brady), 1877 -- Fissurina orbignyana Seguenza, 1862 -- Fissurina seminiformis (Schwager), 1866 -- Frondicularia saggitula van den Broeck, 1876 -- Fursenkoina bradyi (Cushman), 1922 -- Fursenkoina complanata (Egger), 1893 -- Globobulimina pacifica Cushman, 1927 -- Globocassidulina punctata Berggren and Miller, 1986 -- Globocassidulina subglobosa (Brady), 1881. , Globulina myristiformis (Williamson), 1858 -- Glomospira charoides (Jones and Parker), 1860 -- Glomospira gordialis (Jones and Parker), 1860 -- Glomospirella diffundens (Cushman and Renz), 1946 -- Glomospirella gaultina (Berthelin), 1880 -- Gyroidinoides quadratus (Cushman and Church), 1929 -- Gyroidinoides soldanii (d'Orbigny), 1826 -- Hanzawaia ammophila (Gümbel), 1868 -- Hanzawaia caribaea (Cushman and Bermúdez), 1936 -- Hanzawaia mantaensis (Galloway and Morrey), 1929 -- Haplophragmoides constrictus Krasheninnikov, 1973 -- Haplophragmoides multicamerus Krasheninnikov, 1973 -- Haplophragmoides pervagatus Krasheninnikov, 1973 -- Haplophragmoides walteri (Grzybowski), 1898 -- Heterolepa dutemplei (d'Orbigny), 1846 -- Hippocrepina depressa Vasicek, 1947 -- Hoeglundina elegans (d'Orbigny), 1826 -- Hormosina globulifera Brady, 1879 -- Hormosinella carpenteri (Brady), 1881 -- Hormosinella distans (Brady), 1881 -- Hormosinelloides guttifer (Brady), 1881 -- Hyalinea balthica (Schroeter), 1783 -- Hyperammina elongata Brady, 1878 -- Ioanella tumidula (Brady), 1884 -- Jaculella acuta Brady, 1879 -- Kalamopsis grzybowskii (Dylàzanka), 1923 -- Karreriella bradyi (Cushman), 1911 -- Karreriella novangliae (Cushman), 1922 -- Karrerulina conversa (Grzybowski), 1901 -- Lagena sulcata (Walker and Jacob), 1798 -- Latibolivina subreticulata (Parr) 1932 -- Laticarinina pauperata (Parker and Jones), 1865 -- Lenticulina anaglypta (Loeblich and Tappan), 1987 -- Lenticulina convergens (Bornemann), 1855 -- Lenticulina gibba (d'Orbigny), 1839 -- Lenticulina iota (Cushman), 1923 -- Lenticulina muensteri (Roemer), 1839 -- Lituotuba lituiformis (Brady), 1879 -- Loxostomina limbata (Brady), 1881 -- Loxostomoides applinae (Plummer), 1927 -- Marginulina obesa Cushman, 1923 -- Marssonella oxycona (Reuss), 1860 -- Martinottiella communis (d'Orbigny), 1826. , Matanzia bermudezi Palmer, 1936 -- Melonis barleeanum (Williamson), 1858 -- Melonis pompilioides (Fichtel and Moll), 1798 -- Melonis sphaeroides Voloshinova, 1958 -- Neoconorbina terquemi (Rzehak), 1888 -- Neoeponides auberii (d'Orbigny), 1839 -- Neoeponides hillebrandti Fisher, 1969 -- Neoflabellina jarvisi (Cushman), 1935 -- Neolenticulina peregrina (Schwager), 1866 -- Nonion havanense Cushman and Bermúdez, 1937 -- Nonionella turgida (Williamson), 1858 -- Nonionellina labradorica (Dawson), 1860 -- Nummoloculina contraria (d'Orbigny), 1846 -- Nuttallides truempyi (Nuttall), 1930 -- Nuttallides umbonifera (Cushman), 1933 -- Oolina hexagona (Williamson), 1848 -- Oridorsalis umbonatus (Reuss), 1851 -- Osangularia culter (Parker and Jones), 1865 -- Osangularia velascoensis (Cushman), 1925 -- Parabrizalina porrecta (Brady), 1881 -- Paratrochammina challengeri Brönnimann and Whittaker, 1988 -- Patellina corrugata Williamson, 1858 -- Planularia australis Chapman, 1941 -- Planularia gemmata (Brady), 1881 -- Planulina ambigua (Franzenau), 1888 -- Planulina ariminensis d'Orbigny, 1826 -- Planulina costata (Hantken), 1875 -- Planulina foveolata (Brady), 1884 -- Planulina mexicana Cushman, 1927 -- Planulina renziCushman and Stainforth, 1945 -- Planulina rugosa (Phleger and Parker), 1951 -- Planulina subtenuissima (Nuttall), 1928 -- Planulina wuellerstorfi (Schwager), 1866 -- Plectofrondicularia parri Finlay, 1939 -- Plectofrondicularia paucicostata Cushman and Jarvis, 1929 -- Plectofrondicularia vaughani Cushman, 1927 -- Pleurostomella brevis Schwager, 1866 -- Praecystammina globigerinaeformis Krasheninnikov, 1973 -- Psammosphaera fusca Schulze, 1875 -- Pseudoclavulina amorpha (Cushman), 1926 -- Pseudonodosinella elongata (Grzybowski), 1898 -- Pseudonodosinella nodulosa (Brady, 1879 ) emend. Loeblich and Tappan, 1987 -- Pseudonodosinella troyeri (Tappan), 1960. , Pseudoreophax cisownicensis Geroch, 1961.
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  • 5
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 438 (2005), S. 483-487 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The processes causing the middle Miocene global cooling, which marked the Earth's final transition into an ‘icehouse’ climate about 13.9 million years ago (Myr ago), remain enigmatic. Tectonically driven circulation changes and variations in atmospheric carbon dioxide levels ...
    Materialart: Digitale Medien
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  • 6
    Publikationsdatum: 2020-02-06
    Beschreibung: We investigated the onset and development of Cretaceous Oceanic Anoxic Event 2 (OAE2) in a newly drilled core (SN degrees 4) from the Tarfaya Basin (southern Morocco), where this interval is unusually expanded. High-resolution (centimeter-scale equivalent to centennial) analysis of bulk organic and carbonate stable isotopes and of carbonate and organic carbon content in combination with XRF scanner derived elemental distribution reveal that the ocean-climate system behaved in a highly dynamic manner prior to and during the onset of OAE2. Correlation with the latest orbital solution indicates that the main carbon isotope shift occurred during an extended minimum in orbital eccentricity (similar to 400 kyr cycle). Shorter-term fluctuations in carbonate and organic carbon accumulation and in sea level related terrigenous discharge were predominantly driven by variations in orbital obliquity. Negative excursions in organic and carbonate delta C-13 preceded the global positive delta C-13 shift marking the onset of OAE2, suggesting injection of isotopically depleted carbon into the atmosphere. The main delta C-13 increase during the early phase of OAE2 in the late Cenomanian was punctuated by a transient plateau. Maximum organic carbon accumulation occurred during the later part of the main delta C-13 increase and was associated with climate cooling events, expressed as three consecutive maxima in bulk carbonate delta O-18. The extinctions of the thermocline dwelling keeled planktonic foraminifers Rotalipora greenhornensis and Rotalipora cushmani occurred during the first and last of these cooling events and were likely associated with obliquity paced, ocean-wide expansions, and intensifications of the oxygen minimum zone, affecting their habitat space on a global scale.
    Materialart: Article , PeerReviewed
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  • 7
    Publikationsdatum: 2020-02-06
    Beschreibung: An important tool for deep-sea temperature reconstruction is Mg/Ca paleothermometry applied to benthic foraminifera. Foraminifera of the genus Melonis appear to be promising candidates for temperature reconstructions due to their wide geographical and bathymetric distribution, and their infaunal habitat, which was suggested to reduce secondary effects from carbonate ion saturation (Δ[CO3 2−]). Here, we make substantial advances to previous calibration efforts and present new multi-lab Mg/Ca data for Melonis barleeanum and Melonis pompilioides from more than one hundred core top samples spanning in situ bottom temperatures from −1 to 16 °C, coupled with morphometric analyses of the foraminifer tests. Both species and their morphotypes seem to have a similar response of Mg/Ca to growth temperature. Compilation of new and previously published data reveals a linear dependence of temperature on Mg/Ca, with a best fit of Mg/Ca (mmol/mol) = 0.113 ± 0.005 ∗ BWT (°C) + 0.792 ± 0.036 (r2 = 0.81; n = 120; 1σ SD). Salinity, bottom water Δ[CO3 2−], and varying morphotypes have no apparent effect on the Mg/Ca-temperature relationship, but pore water Δ[CO3 2−] might have had an influence on some of the samples from the tropical Atlantic.
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  • 8
    Publikationsdatum: 2021-02-08
    Beschreibung: Highlights • Complete upper Albian to early Turonian climate archive in drilled core from Tarfaya Basin. • Eccentricity pacing of mid Cretaceous OAE isotope excursions. • MCE and OAE2 associated with climate cooling and sea level fall. Abstract A 325 m long continuous succession of uppermost Albian to lower Turonian pelagic (outer shelf) deposits was recovered from a new drill site in the central part of the Tarfaya Basin (southern Morocco). Natural gamma ray wireline logging, carbonate and organic carbon content, bulk carbonate and organic carbon stable isotopes and X-ray fluorescence (XRF)-scanner derived elemental distribution data in combination with planktonic foraminiferal biostratigraphy indicate complete recovery of the Cenomanian Stage. This exceptional sediment archive allows to identify orbitally driven cyclic sedimentation patterns and to evaluate the pacing of climatic events and regional environmental change across the Albian-Cenomanian boundary (ACB), the mid-Cenomanian Event (MCE) and Oceanic Anoxic Event 2 (OAE2) in the latest Cenomanian. The deposition of organic-rich sediments in the Tarfaya Basin, likely driven by upwelling of nutrient-rich water masses, started during the latest Albian and intensified in two major steps following the MCE and the onset of OAE2. The duration and structure of the MCE and OAE2 carbon isotope excursions exhibit striking similarities, suggesting common driving mechanisms and climate-carbon cycle feedbacks. Both events were also associated with eustatic sea level falls, expressed as prominent sequence boundaries in the Tarfaya Basin. Based on the 405 kyr signal imprinted on the Natural Gamma Ray (NGR) and XRF-scanner derived Log(Zr/Rb) records, we estimate the duration of the Cenomanian Stage to be 4.8 ± 0.2 Myr.
    Materialart: Article , PeerReviewed
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  • 9
    facet.materialart.
    Unbekannt
    Elsevier
    In:  Earth and Planetary Science Letters, 365 . pp. 38-50.
    Publikationsdatum: 2019-09-23
    Beschreibung: We integrate micropaleontological and geochemical records (benthic stable isotopes, neodymium isotopes, benthic foraminiferal abundances and XRF-scanner derived elemental data) from well-dated Pacific Ocean successions (15–12.7 Ma) to monitor circulation changes during the middle Miocene transition into a colder climate mode with permanent Antarctic ice cover. Together with previously published records, our results show improvement in deep water ventilation and strengthening of the meridional overturning circulation following major ice expansion at ∼13.9 Ma. Neodymium isotope data reveal, however, that the provenance of intermediate and deep water masses did not change markedly between 15 and 12.7 Ma. We attribute the increased δ13C gradient between Pacific deep and intermediate water masses between ∼13.6 and 12.7 Ma to more vigorous entrainment of Pacific Central Water into the wind-driven ocean circulation due to enhanced production of intermediate and deep waters in the Southern Ocean. Prominent 100 kyr ventilation cycles after 13.9 Ma reveal that the deep Pacific remained poorly ventilated during warmer intervals at high eccentricity, whereas colder periods (low eccentricity) were characterized by a more vigorous meridional overturning circulation with enhanced carbonate preservation. The long-term δ13C decline in Pacific intermediate and deep water sites between 13.5 and 12.7 Ma reflects a global trend, probably related to a re-adjustment response of the global carbon cycle following the last 400 kyr carbon maximum (CM6) of the “Monterey Excursion”.
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  • 10
    Publikationsdatum: 2019-09-23
    Beschreibung: Present day oceans are well ventilated, with the exception of mid-depth oxygen minimum zones (OMZs) under high surface water productivity, regions of sluggish circulation, and restricted marginal basins. In the Mesozoic, however, entire oceanic basins transiently became dysoxic or anoxic. The Cretaceous ocean anoxic events (OAEs) were characterised by laminated organic-carbon rich shales and low-oxygen indicating trace fossils preserved in the sedimentary record. Yet assessments of the intensity and extent of Cretaceous near-bottom water oxygenation have been hampered by deep or long-term diagenesis and the evolution of marine biota serving as oxygen indicators in today's ocean. Sedimentary features similar to those found in Cretaceous strata were observed in deposits underlying Recent OMZs, where bottom-water oxygen levels, the flux of organic matter, and benthic life have been studied thoroughly. Their implications for constraining past bottom-water oxygenation are addressed in this review. We compared OMZ sediments from the Peruvian upwelling with deposits of the late Cenomanian OAE 2 from the north-west African shelf. Holocene laminated sediments are encountered at bottom-water oxygen levels of 〈 7 μmol kg−1 under the Peruvian upwelling and 〈 5 μmol kg−1 in California Borderland basins and the Pakistan Margin. Seasonal to decadal changes of sediment input are necessary to create laminae of different composition. However, bottom currents may shape similar textures that are difficult to discern from primary seasonal laminae. The millimetre-sized trace fossil Chondrites was commonly found in Cretaceous strata and Recent oxygen-depleted environments where its diameter increased with oxygen levels from 5 to 45 μmol kg−1. Chondrites has not been reported in Peruvian sediments but centimetre-sized crab burrows appeared around 10 μmol kg−1, which may indicate a minimum oxygen value for bioturbated Cretaceous strata. Organic carbon accumulation rates ranged from 0.7 and 2.8 g C cm−2 kyr−1 in laminated OAE 2 sections in Tarfaya Basin, Morocco, matching late Holocene accumulation rates of laminated Peruvian sediments under Recent oxygen levels below 5 μmol kg−1. Sediments deposited at 〉 10 μmol kg−1 showed an inverse exponential relationship of bottom-water oxygen levels and organic carbon accumulation depicting enhanced bioirrigation and decomposition of organic matter with increased oxygen supply. In the absence of seasonal laminations and under conditions of low burial diagenesis, this relationship may facilitate quantitative estimates of palaeo-oxygenation. Similarities and differences between Cretaceous OAEs and late Quaternary OMZs have to be further explored to improve our understanding of sedimentary systems under hypoxic conditions.
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