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  • 2010-2014  (24)
  • 2000-2004  (5)
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  • 1
    Publication Date: 2024-01-09
    Keywords: 162-985A; AGE; Albiespollenites spp.; Alnipollenites verus; Appendicidites spp.; Aquilapollenites spp.; Azolla spp.; Basopollis spp.; Caryapollenites simplex; Cedripites; Chenopodipollis spp.; Cicatricosisporites spp.; Compositoipollenites rhizophorus; Cupuliferoidaepollenites liblarensis; Cyclongranulates; Deltoidospora spp.; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Ericipites spp.; Foveosporites spp.; Gleicheniidites spp.; Hydrosporis azollensis; Ilexpollenites spp.; Inaperturopollenites hiatus; Joides Resolution; Laevigatosporites spp.; Leg162; Leotrilites spp.; Lycopodiumsporites spp.; Microfoveolatosporites spp.; Milfordia foveosporites; Momipites coryloides; Monocolpollenites spp.; Norwegian Sea; Nyssapollenites spp.; Ocean Drilling Program; ODP; Osmundacidites spp.; Pandaniidites spp.; Piceapollis spp.; Pinus spp.; Pistillipollenites mcgregorii; Platycaryapollenites platycaryoides; Podocarpidites spp.; Pollen, total; Pollen indeterminata; Polyatriopollenites spp.; Polypodiaceiosporites spp.; Porocolpopollenites vestibulum; Radialisporis spp.; Retitricolpites spp.; Salixpollenites spp.; Sample code/label; Sciadopityspollenites spp.; Sequoiapollenites polyformosus; Stereisporites spp.; Striamonoletes spp.; Subtriporopollenites spp.; Tetracolporopollenites spp.; Tiliaepollenites microreticulatus; Toriosporites spp.; Triatriopollenites subtriangulus; Tricolpites spp.; Tricolporopollenites spp.; Trilites spp.; Triplanosporites spp.; Triporopollenites plektosus; Triporopollenites robustus; Triporopollenites spp.; Trudopollis spp.; Tsuga spp.; Ulmus spp.; Verrucosisporites spp.
    Type: Dataset
    Format: text/tab-separated-values, 715 data points
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  • 2
    Publication Date: 2024-04-25
    Keywords: 318-U1356A; Calculated, see reference(s); DEPTH, sediment/rock; DRILL; Drilling/drill rig; Exp318; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Precipitation, annual mean; Precipitation, annual mean, maximum; Precipitation, annual mean, minimum; Temperature, annual mean; Temperature, annual mean, maximum; Temperature, annual mean, minimum; Temperature, summer; Temperature, summer, maximum; Temperature, summer, minimum; Temperature, winter; Temperature, winter, maximum; Temperature, winter, minimum; Wilkes Land
    Type: Dataset
    Format: text/tab-separated-values, 3646 data points
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  • 3
    Publication Date: 2024-04-25
    Keywords: 318-U1356A; Alisporites sp.; Alisporites tenuicorpus; Anacolosidites acutullus; Anacolosidites luteoides; Araucariacites spp.; Arecipites microverrucatus; Arecipites spp.; Assamiapollenites cf. incognitus; Baculatisporis sp.; Baculatisporites spp.; Battenipollis sectilis; Beaupreaidites cf. elegansiformis; Beaupreaidites orbiculatus-type; Beaupreaidites sp.; Beaupreaidites verrucosus; Bluffopollis scabratus; Bombacacidites protocostatus; Bombacacidites sp.; Brevitricolpites sp.; Callialasporites dampierii; Camarozonosporites cf. ohaiensis; Camarozonosporites sp.; Cannanoropollis obscurus; Chomotriletes sp.; Cicatricosisporites sp.; Classopollis spp.; Counting, palynology; Crassoretitriletes vanraadshoovenii; Crusafontites sp.; Cyathidites cf. splendens; Cyathidites granulatus; Cyathidites sp.; Cyathidites spp.; Dacrycarpites sp.; Dacrydiumites spp.; Densoisporites sp.; Densosporites sp.; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Dicotetradites clavatus; Dilwynites granulatus; Dilwynites tuberculatus; DRILL; Drilling/drill rig; Ephedripites sp.; Ericipites sp.; Exp318; Foveotriletes lacunosus; Foveotriporites sp.; Fungi; Gambierina edwardsii; Gleichenidiites spp.; Gleicheniidites spp.; Graminidites sp.; Granulatisporites sp.; Granulatosporis sp.; Integrated Ocean Drilling Program / International Ocean Discovery Program; Integricorpus sp.; Intratriporopollenites cf. notabilis; IODP; Ischyosporites sp.; Joides Resolution; Klukisporites sp.; Kuylisporites waterbolkii; Laevigatosporites sp.; Laevigatosporites spp.; Lycopodium exoticum; Lycopodiumsporites sp.; Malvacipollis sp.; Malvacipollis spp.; Margocolporites cf. cribellatus; Margocolporites sp.; Microalatidites varisaccatus; Microcachryidites antarticus; Myricipites harrisii; Myrtaceidites spp.; Myrtaceidites tenuis; Neoraistrickia truncata; Nothofagidites asperus complex; Nothofagidites cf. waipawaensis; Nothofagidites flemingii complex; Nothofagidites lachlaniae complex; Nothofagidites spp.; Peninsulapollis sp.; Periporopollenites cf. polyoratus; Periporopollenites cf. vesicus; Phyllocladidites mawsonii; Plicatipollenites spp.; Podocarpidites otagoensis; Podocarpidites sp.; Podocarpidites spp.; Podosporites sp.; Pollen, bisaccate; Pollen and spores; Pollen and spores, reworked; Pollen and spores, reworked per unit sediment mass; Pollen and spores per unit sediment mass; Polycolpites sp.; Polycolpoporopollenites sp.; Polypodiaceoisporites sp.; Polypodiisporites sp.; Propylipollis sp.; Proteacidites aff. reticuloscabratus; Proteacidites annularis; Proteacidites cf. adenanthoides; Proteacidites cf. amolosexinus; Proteacidites cf. annularis; Proteacidites cf. callosus; Proteacidites cf. crassus; Proteacidites cf. incurvatus; Proteacidites cf. minimus; Proteacidites cf. ornatus; Proteacidites cf. pseudomoides; Proteacidites cf. spiniferus; Proteacidites cf. subscabratus; Proteacidites cf. tuberculatus; Proteacidites constrictus; Proteacidites pachypolus; Proteacidites parvus; Proteacidites pseudosyncolporites; Proteacidites reticuloscabratus; Proteacidites similis; Proteacidites sp.; Proteacidites spp.; Proteacidites symphyonemoides; Psilabrevitricolporites sp.; Psilamonocolpites sp.; Psilamonocolpites spp.; Psilastephanocolporites sp.; Psilastephanoporites sp.; Psilatricolpites sp.; Psilatricolpites spp.; Psilatricolporites sp.; Psilatricolporites spp.; Psilatriporites sp.; Psilatriporites spp.; Psilatriporites vestigiatus; Punctatosporites sp.; Retibrevitricolporites sp.; Retistephanocolporites sp.; Retistephanoporites sp.; Retitricolpites spp.; Retitricolporites spp.; Retitriporites sp.; Rhoipites spp.; Sample code/label; Sample mass; Scabratisporis sp.; Scabratricolporites sp.; Schizophacus cf. parvus; Spathiphyllum-type; Spores, baculate trilete; Spores, clavate trilete; Spores, echinate; Spores, foveolate; Spores, foveolate trilete; Spores, laevigate trilete; Spores, trilete; Spores, trilete echinate; Spores, trilete reticulate; Spores, trilete scabrate; Spores, trilete verrucate; Spores, trisaccate; Spores, verrucate; Stereisporites sp.; Striatopodocarpites spp.; Striatricolpites sp.; Tetracolporites oamaruensis; Tetraporina sp.; Tricolpites cf. lilliei; Tricolpites sp.; Triorites aff. spinosus; Triporites sp.; Triporoletes cf. reticulatus; Triporopollenites cf. ambiguus; Triporopollenites sp.; Tubulifloridites sp.; Weylandites lucifer; Wilkes Land
    Type: Dataset
    Format: text/tab-separated-values, 31175 data points
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  • 4
    Publication Date: 2024-04-25
    Keywords: 318-U1356A; Calculated, see reference(s); DEPTH, sediment/rock; DRILL; Drilling/drill rig; Exp318; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Precipitation, annual mean; Precipitation, annual mean, standard deviation; Temperature, annual mean; Temperature, annual mean, standard deviation; Temperature, summer; Temperature, summer, standard deviation; Temperature, winter; Temperature, winter, standard deviation; Wilkes Land
    Type: Dataset
    Format: text/tab-separated-values, 2590 data points
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  • 5
    Publication Date: 2024-04-25
    Keywords: 318-U1356A; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Exp318; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Taxon/taxa; Wilkes Land
    Type: Dataset
    Format: text/tab-separated-values, 432 data points
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  • 6
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    PANGAEA
    In:  Supplement to: Pross, Jörg; Contreras, Lineth; Bijl, Peter K; Greenwood, David R; Bohaty, Steven M; Schouten, Stefan; Bendle, James A; Röhl, Ursula; Tauxe, Lisa; Raine, J Ian; Huck, Claire E; van de Flierdt, Tina; Jamieson, Stewart S R; Stickley, Catherine E; van de Schootbrugge, Bas; Escutia Dotti, Carlota; Brinkhuis, Henk; IODP Expedition 318 Scientists (2012): Persistent near-tropical warmth on the Antarctic continent during the early Eocene epoch. Nature, 488(7409), 73-77, https://doi.org/10.1038/nature11300
    Publication Date: 2024-04-25
    Description: The warmest global climates of the past 65 million years occurred during the early Eocene epoch (about 55 to 48 million years ago), when the Equator-to-pole temperature gradients were much smaller than today (doi:10.1130/0091-7613(1995)023〈1044:ECCALT〉2.3.CO;2, doi:10.1038/nature08399) and atmospheric carbon dioxide levels were in excess of one thousand parts per million by volume (doi:10.1016/j.gca.2003.09.002, doi:10.1038/ngeo1186). Recently the early Eocene has received considerable interest because it may provide insight into the response of Earth's climate and biosphere to the high atmospheric carbon dioxide levels that are expected in the near future (doi:10.1007/s10584-011-0156-z) as a consequence of unabated anthropogenic carbon emissions (doi:10.1038/ngeo1186, doi:10.1038/nature06588). Climatic conditions of the early Eocene 'greenhouse world', however, are poorly constrained in critical regions, particularly Antarctica. Here we present a well-dated record of early Eocene climate on Antarctica from an ocean sediment core recovered off the Wilkes Land coast of East Antarctica. The information from biotic climate proxies (pollen and spores) and independent organic geochemical climate proxies (indices based on branched tetraether lipids) yields quantitative, seasonal temperature reconstructions for the early Eocene greenhouse world on Antarctica. We show that the climate in lowland settings along the Wilkes Land coast (at a palaeolatitude of about 70° south) supported the growth of highly diverse, near-tropical forests characterized by mesothermal to megathermal floral elements including palms and Bombacoideae. Notably, winters were extremely mild (warmer than 10 °C) and essentially frost-free despite polar darkness, which provides a critical new constraint for the validation of climate models and for understanding the response of high-latitude terrestrial ecosystems to increased carbon dioxide forcing.
    Keywords: 318-U1356A; DRILL; Drilling/drill rig; Exp318; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Wilkes Land
    Type: Dataset
    Format: application/zip, 6 datasets
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  • 7
    Publication Date: 2024-04-25
    Keywords: 318-U1356A; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Exp318; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Taxon/taxa; Wilkes Land
    Type: Dataset
    Format: text/tab-separated-values, 512 data points
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  • 8
    Publication Date: 2024-04-25
    Keywords: 318-U1356A; Calculated from the MBT/CBT proxy; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; Exp318; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Sample code/label; Temperature, air, annual mean; Wilkes Land
    Type: Dataset
    Format: text/tab-separated-values, 336 data points
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  • 9
    Publication Date: 2011-05-01
    Description: The high abundances and cyclic distribution of remains of the freshwater fern Azolla in early-Middle Eocene sediments from the Arctic Ocean have previously been related to episodic surface-water freshening, which was speculated to be orbitally modulated. Our integrated palynological and cyclostratigraphical analysis of the recovered Azolla interval in Integrated Ocean Drilling Program (IODP) core 302-M0004A-11X resulted in the recognition of two clear periodicities: a dominant [~]1.2 m cyclicity, which we relate to changes in obliquity ([~]40 k.y.), and a weaker [~]0.7 m cyclicity, which we link to precession ([~]21 k.y.). Cycles in the abundances of Azolla, cysts of freshwater-tolerant dinoflagellates, and swamp-vegetation pollen show covariability in the obliquity domain. This strong correlation suggests periods of enhanced rainfall and runoff during Azolla blooms, presumably linked to increased local summer temperatures during obliquity maxima. Larix and bisaccate conifer pollen covary at the precession frequency, with peak occurrences corresponding to precession minima, possibly as a result of enhanced continental runoff from a more remote source area and a stronger seasonal contrast. Following the sudden demise of Azolla ca. 48.1 Ma, runoff (cycles) continued to influence the central Arctic at decreased intensity. This and a concomitant decline in swamp-vegetation pollen suggest edaphically drier conditions on land and decreased runoff into the Arctic Ocean, causing salinity changes, which might have been fatal for Azolla. Moreover, a sea-level rise, inferred from overall decreasing total terrestrial palynomorph concentrations, possibly facilitated oceanic connections.
    Print ISSN: 0091-7613
    Electronic ISSN: 1943-2682
    Topics: Geosciences
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  • 10
    Publication Date: 2012-01-01
    Description: Early–middle Eocene (ca. 53–38 Ma) sediments of the Eureka Sound Group in Canada’s Arctic Archipelago preserve evidence of lush mixed conifer-broadleaf rain forests, inhabited at times by alligators, turtles, and diverse mammals, including primates, tapirs, brontotheres, and hippo-like Coryphodon. This biota reflects a greenhouse world, offering a climatic and ecologic deep time analog of a mild ice-free Arctic that may be our best means to predict what is in store for the future Arctic if current climate change goes unchecked. In our review of the early–middle Eocene Arctic flora and vertebrate fauna, we place the Arctic fossil localities in historic, geographic, and stratigraphic context, and we provide an integrated synthesis and discussion of the paleobiology and paleoecology of these Eocene Arctic forests and their vertebrate inhabitants. The abundance and diversity of tapirs and plagiomenids (both rare elements in midlatitude faunas), and the absence of artiodactyls, early horses, and the hyopsodontid “condylarth” Hyopsodus (well represented at midlatitude localities) are peculiar to the Eocene Arctic. The Eocene Arctic macrofloras reveal a forested landscape analogous to the swamp-cypress and broadleaf floodplain forests of the modern southeastern United States. Multiple climate proxies indicate a mild temperate early–middle Eocene Arctic with winter temperatures at or just above freezing and summer temperatures of 20 °C (or higher), and high precipitation. At times, this high precipitation resulted in freshwater discharge into a nearly enclosed Arctic Ocean basin, sufficient to cause surface freshening of the Arctic Ocean, supporting mats of the floating fern Azolla. Fluctuating Arctic Ocean sea level due to freshwater inputs as well as tectonics produced temporary land bridges, allowing land plants and animals to disperse between North America and both Europe and Asia.
    Print ISSN: 0016-7606
    Electronic ISSN: 1943-2674
    Topics: Geosciences
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