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PANGAEA - Publishing Network for Geoscientific & Environmental Data (840.638 recursos)

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PANGAEA tech-keyword 'citableWithChilds' (56524 data sets)

Mostrando recursos 1 - 20 de 148.354

  1. Dinoflagellate cysts in the Oligocene to Miocene sediments of IODP Site 318-U1356A

    Bijl, Peter K; Houben, Alexander J P; Bruls, A; Pross, Jörg; Sangiorgi, Francesca; García-Alix, Antonio
    This dataset contains the raw count data of dinoflagellate cysts, acritarchs and terrestrial palynomorphs from the Oligocene-Miocene of Hole U1356A, offshore the Wilkes Land Margin, east Antarctica

  2. Chemical composition of manganese nodules from the Southern Ocean using wet chemical analysis (2)

    Meylan, Maurice A; Goodell, H G

  3. Chemical composition of manganese nodules from the Southern Ocean using wet chemical analysis

    Meylan, Maurice A; Goodell, H G

  4. Chemical composition of manganese nodules from the Southern Ocean

    Meylan, Maurice A; Goodell, H G

  5. Geochemistry on manganese nodules from the Southern Ocean

    Meylan, Maurice A; Goodell, H G
    Manganese nodules from the Scotia Sea and Pacific Ocean sectors of the Southern Ocean display regional differences in chemical and mineralogical composition. Mn/Fe and todorokite/delta-MnO2 ratios decrease southeasterly from the Southwestern Pacific Basin to the Drake passage-Scotia Sea. Relative to Mn, the greatest enrichments of Co, Ti, V, Zn, Mo and Sn occur in Drake Passage-Scotia Sea nodules, while Ni and Cu are most enriched in the Southwestern Pacific Basin. Manganese mineralogy is directly related to the Mn/Fe ratio, so that todorokite rather than delta-MnO2 predominates when high manganese vs iron contents are found. Trace metal contents are also related...

  6. Tab. 1: Sampling date, location, ice thickness, salinity, Nd isotope compositions and REE concentrations for the sea-ice samples recovered during cruise PS80

    Laukert, Georgi; Frank, Martin; Hathorne, Ed C; Krumpen, Thomas; Rabe, Ben; Bauch, Dorothea; Werner, Kirstin; Peeken, Ilka; Kassens, Heidemarie
    Freshwater and sea ice in the Arctic Ocean (AO) both respond to climate forcing but changes in their distribution may in turn also significantly affect Northern Hemisphere climate. The exact mechanisms controlling their transport are, however, still subject of ongoing research. Radiogenic neodymium (Nd) isotopes (expressed as eNd) and rare earth elements (REEs) have successfully been used to trace ocean circulation in the AO and can provide valuable information on the origin, transport and fate of Arctic freshwater and drifting sea ice. Here, we present first sea-ice data and discuss the applicability of these tracers to determine the pathways of...

  7. Annotated record of the detailed examination of Mn deposits from R.R.S. "Discovery" Cruise 11 stations

    Stanley, Daniel Jean; Taylor, P T; Sheng, Harrison; Stuckenrath, Robert Jr
    The southernmost part of the Sohm Abyssal Plain in the Northwest Atlantic Basin is geographically distal with respect to the major source of Quaternary terrigenous material transported from the Canadian Maritime Provinces. An assessment of the proportion of more locally introduced sediment relative to that derived from distal sources is based largely on size and compositional analyses of Quaternary piston core samples. These data are supplemented by radiocarbon dating of selected core samples, bottom photographs, conductivity-temperature-depth profiles, and seismic records. The premises of the study are that (a) locally derived sediment should be most abundant near high-relief bathymetric features such...

  8. Annotated record of the detailed examination of Mn deposits off Newfoundland, North Atlantic

    Smith, J N; Schafer, C T
    Measurements of Pb-210 activities, in conjunction with micropaleontological, geotechnical and sedimentological observations, on sediment cores have been used to characterize two distinctive bioturbation regimes on the continental slope and rise east of Newfoundland. On the rise (2600 m), excess Pb-210 is confined to the upper few centimeters of the coarser-grained sediments underlying the axis of the Western Boundary Undercurrent. The geological and geochemical evidence for a low rate of bioturbation in this high bottom current regime is consistent with a reduced population of deeper burrowing macrofauna, particularly the species Maldane sarsi. In contrast, a higher flux of organic-rich, fine-grained particulate...

  9. Annotated record of the detailed examination of Mn deposits observed Mid-Atlantic Ridge at 45°N

    Aumento, Fabrizio
    Diorites, associated with basalts, basalt breccias, and serpentinized peridotites, occur in situ on the faulted scarps of two seamounts from the western High Fractured Plateau of the Mid-Atlantic Ridge at 45°N.

  10. Environmental context of all stations from the Tara Oceans Expedition (2013), about the annual cycle of key parameters estimated daily from remote sensing products at a spatial resolution of 100km

    Ardyna, Mathieu; Tara Oceans Consortium, Coordinators; Tara Oceans Expedition, Participants
    The Tara Oceans Expedition (2009-2013) sampled the world oceans on board a 36 m long schooner, collecting environmental data and organisms from viruses to planktonic metazoans for later analyses using modern sequencing and state-of-the-art imaging technologies. Tara Oceans Data are particularly suited to study the genetic, morphological and functional diversity of plankton. The present data set includes text files, one for each station, that contain the annual cycle of key parameters estimated daily from remote sensing products at a spatial resolution of 100km centered on the sampling location. File names correspond to the station identifier (TARA_station#). A description of all...

  11. Environmental context of all samples from the Tara Oceans Expedition (2013), about the annual cycle of key parameters estimated daily from remote sensing products at a spatial resolution of 9km

    Ardyna, Mathieu; Tara Oceans Consortium, Coordinators; Tara Oceans Expedition, Participants
    The Tara Oceans Expedition (2009-2013) sampled the world oceans on board a 36 m long schooner, collecting environmental data and organisms from viruses to planktonic metazoans for later analyses using modern sequencing and state-of-the-art imaging technologies. Tara Oceans Data are particularly suited to study the genetic, morphological and functional diversity of plankton. The present data set includes text files, one for each sample, that contain the annual cycle of key parameters estimated daily from remote sensing products at a spatial resolution of 9km centered on the sampling location. File names correspond to the sample identifier (TARA_barcodeID). A description of all...

  12. Dip azimuth and dip values data of the Monte Alpi fault network, 3D modelled fault surfaces of the Monte Alpi structural network and excel files related the fault throw and the displacement/length analyses

    La Bruna, Vincenzo; Agosta, Fabrizio; Lamarche, Juliette; Viseur, Sophie; Prosser, Giacomo
    The Monte Alpi massif is made up of Mesozoic carbonates of the Inner Apulian Platform, and a mixed carbonate-terrigenous sedimentary succession representing the infill of a Messinian foreland basin system. The present work focuses on the comprehension of the growth mechanisms and dimensional properties of the pre-Pliocene Monte Alpi fault network by mean of integrated field and laboratory analyses. The field survey focuses on the exposed Messinian succession of Monte Alpi to assess its textural, compositional and overall stratigraphic properties, and on the structural characterization of the outcropping Early Cretaceous, Early Messinian, and Late Messinian syn-sedimentary faults. 3D geological reconstruction...

  13. Radiocarbon ages of peramfrost cores collected on Sobo-Sise Island and Bykovsky Peninsula

    Fuchs, Matthias; Grosse, Guido; Strauss, Jens; Günther, Frank; Grigoriev, Mikhail N; Maximov, Georgy M; Hugelius, Gustaf

  14. Organic Carbon content of peramfrost cores collected on Sobo-Sise Island and Bykovsky Peninsula

    Fuchs, Matthias; Grosse, Guido; Strauss, Jens; Günther, Frank; Grigoriev, Mikhail N; Maximov, Georgy M; Hugelius, Gustaf

  15. Nitrogen content of peramfrost cores collected on Sobo-Sise Island and Bykovsky Peninsula

    Fuchs, Matthias; Grosse, Guido; Strauss, Jens; Günther, Frank; Grigoriev, Mikhail N; Maximov, Georgy M; Hugelius, Gustaf

  16. Mean laboratory results for soil C, N and ground ice characteristics for peramfrost cores collected on Sobo-Sise Island and Bykovsky Peninsula

    Fuchs, Matthias; Grosse, Guido; Strauss, Jens; Günther, Frank; Grigoriev, Mikhail N; Maximov, Georgy M; Hugelius, Gustaf

  17. Sample site characteristics for peramfrost cores collected on Sobo-Sise Island and Bykovsky Peninsula

    Fuchs, Matthias; Grosse, Guido; Strauss, Jens; Günther, Frank; Grigoriev, Mikhail N; Maximov, Georgy M; Hugelius, Gustaf

  18. Agricultural nitrogen fertilizer uses in the continental U.S. during 1850-2015: a set of gridded time-series data

    Cao, Peiyu; Lu, Chaoqun; Yu, Zhen
    To facilitate earth system modeling and inventory-based studies, we developed a spatially explicit time-series data set of nitrogen (N) fertilizer use in agricultural land of the continental U.S. during 1850 to 2015. The spatial resolution of this data set is 5km × 5km, and the time step is annually. Through gap-filling, we reconstructed the state-level crop-specific N fertilizer use history by harmonizing national and state-level N fertilizer use data from multiple data sources. We then spatialized and resampled N fertilizer use data to 5km × 5km gridded maps based on historical land cover data of the continental U.S. developed by...

  19. Sample site characteristics including mean SOC and SN for peramfrost cores collected on Sobo-Sise Island and Bykovsky Peninsula

    Fuchs, Matthias; Grosse, Guido; Strauss, Jens; Günther, Frank; Grigoriev, Mikhail N; Maximov, Georgy M; Hugelius, Gustaf
    Ice rich Yedoma-dominated landscapes store considerable amounts of organic carbon (C) and nitrogen (N) and are vulnerable to degradation under climate warming. We investigate the C and N pools in two thermokarst-affected Yedoma landscapes - on Sobo-Sise Island and on Bykovsky Peninsula in the North of East Siberia. Soil cores up to three meters depth were collected along geomorphic gradients and analysed for organic C and N contents. A high vertical sampling density in the profiles allowed the calculation of C and N stocks for short soil column intervals and enhanced understanding of within-core parameter variability. Profile-level C and N...

  20. Samples of Yukon Coast and Herschel Island

    Hohberg, Stefanie

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