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  • 2010-2014  (12)
  • 2013  (12)
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  • 2010-2014  (12)
Year
  • 1
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    Miocene to Pliocene changes in South African hydrology and vegetation in relation to the expansion of C4 plants (2013)
    Elsevier
    Details
    Publication Date: 2013-08-01
    Print ISSN: 0012-821X
    Electronic ISSN: 1385-013X
    Topics: Geosciences , Physics
    Published by Elsevier
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    PAPER CURRENT
  • 2
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    An interlaboratory study of TEX86and BIT analysis of sediments, extracts, and standard mixtures (2013)
    American Geophysical Union
    Details
    Publication Date: 2013-12-01
    Electronic ISSN: 1525-2027
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Published by American Geophysical Union
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    PAPER CURRENT
  • 3
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    Compound specific stable isotopes, BIT, pollen and spores of Miocene to Pliocene sediments of ODP Hole 175-1085A (2013)
    PANGAEA
    In:  Supplement to: Dupont, Lydie M; Rommerskirchen, Florian; Mollenhauer, Gesine; Schefuß, Enno (2013): Miocene to Pliocene changes in South African hydrology and vegetation in relation to the expansion of C4 plants. Earth and Planetary Science Letters, 375, 408-417, https://doi.org/10.1016/j.epsl.2013.06.005
    Details
    Publication Date: 2023-03-03
    Description: Pollen and stable carbon (d13C) and hydrogen (dD) isotope ratios of terrestrial plant wax from the South Atlantic sediment core, ODP Site 1085, is used to reconstruct Miocene to Pliocene changes of vegetation and rainfall regime of western southern Africa. Our results reveal changes in the relative amount of precipitation and indicate a shift of the main moisture source from the Atlantic to the Indian Ocean during the onset of a major aridification 8 Ma ago. We emphasise the importance of declining precipitation during the expansion of C4 and CAM (mainly succulent) vegetation in South Africa. We suggest that the C4 plant expansion resulted from an increased equator-pole temperature gradient caused by the initiation of strong Atlantic Meridional Overturning Circulation following the shoaling of the Central American Seaway during the Late Miocene.
    Keywords: Center for Marine Environmental Sciences; MARUM
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 4
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    Intact and core tetraether lipids in water column profiles of suspended particulate matter and of surface sediment samples off Cape Blanc, NW Africa (2013)
    PANGAEA
    In:  Supplement to: Basse, Andreas; Zhu, Chun; Versteegh, Gerard J M; Fischer, Gerhard; Hinrichs, Kai-Uwe; Mollenhauer, Gesine (2014): Distribution of intact and core tetraether lipids in water column profiles of suspended particulate matter off Cape Blanc, NW Africa. Organic Geochemistry, https://doi.org/10.1016/j.orggeochem.2014.04.007
    Details
    Publication Date: 2023-03-03
    Description: In the reconstruction of sea surface temperature (SST) from sedimentary archives, secondary sources, lateral transport and selective preservation are considered to be mainly negligible in terms of influencing the primary signal. This is also true for the archaeal glycerol dialkyl glycerol tetraethers (GDGTs) that form the basis for the TEX86 SST proxy. Our samples represent four years variability on a transect off Cape Blanc (NW Africa). We studied the subsurface production, vertical and lateral transport of intact polar lipids and core GDGTs in the water column at high vertical resolution on the basis of suspended particulate matter (SPM) samples from the photic zone, the subsurface oxygen minimum zone (OMZ), nepheloid layers (NL) and the water column between these. Furthermore we compared the water column SPM GDGT composition with that in underlying surface sediments. This is the first study that reports TEX86 values from the precursor intact polar lipids (IPLs) associated with specific head groups (IPL -specific TEX86). We show a clear deviation from the sea surface GDGT composition in the OMZ between 300 and 600 m. Since neither lateral transport nor selective degradation provides a satisfactory explanation for the observed TEX-derived temperature profiles with a bias towards higher temperatures for both core- and IPL -specific TEX86 values, we suggest that subsurface in situ production of archaea with a distinct relationship between lipid biosynthesis and temperature is the responsible mechanism. However, in the NW-African upwelling system the GDGT contribution of the OMZ to the surface sediments does not seem to affect the sedimentary TEX86 as it shows no bias and still reflects the signal of the surface waters between 0 and 60 m.
    Keywords: Center for Marine Environmental Sciences; MARUM
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 5
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    Intact and core tetraether lipids of surface sediment samples off Cape Blanc, NW Africa (2013)
    PANGAEA
    Details
    Publication Date: 2023-03-03
    Keywords: 424-3; 426-3; 435-1; Branched and isoprenoid tetraether index; Calculated; Cape Blanc; Carbon, organic, total; Carbon and nitrogen and sulfur (CNS) element analyzer, Elementar, Vario EL; Center for Marine Environmental Sciences; CTD, SEA-BIRD SBE 19; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Event label; GeoB13612-3; GeoB13613-3; GeoB13616-6; Maria S. Merian; MARUM; MSM11/2; MUC; MultiCorer; Sample code/label; Sea surface temperature; Sea surface temperature, annual mean; Station label; Tetraether index of 86 carbon atoms
    Type: Dataset
    Format: text/tab-separated-values, 61 data points
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    DATA PANGAEA
  • 6
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    GDGT analyses for core-top sediments from the southern Adriatic Sea (2013)
    PANGAEA
    Details
    Publication Date: 2023-03-03
    Keywords: 666; 668; 670; 671; 673; 674; 675; 676; 677; 678; 680; 681; 682; 683; 684; 685; 686; 687; 689; 690; 691; 692; 693; 694; 695; 696; 697; 699; 700; 701; 702; 703; 704; 705; 706; 707; 708; 709; 710; 712; 713; 714; 716; 717; 718; 719; Acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Center for Marine Environmental Sciences; Crenarchaeol, fractional abundance; Crenarchaeol regio-isomer, fractional abundance; DEPTH, sediment/rock; Dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; Event label; Gargano Promontory; GeoB10701-4; GeoB10703-3; GeoB10704-3; GeoB10705-3; GeoB10707-4; GeoB10708-3; GeoB10709-4; GeoB10710-4; GeoB10711-3; GeoB10712-3; GeoB10713-3; GeoB10714-3; GeoB10715-3; GeoB10716-3; GeoB10717-3; GeoB10718-3; GeoB10719-3; GeoB10720-5; GeoB10721-3; GeoB10722-3; GeoB10723-3; GeoB10724-3; GeoB10725-3; GeoB10726-3; GeoB10727-3; GeoB10728-3; GeoB10729-4; GeoB10730-3; GeoB10731-3; GeoB10732-3; GeoB10733-3; GeoB10734-3; GeoB10735-3; GeoB10736-3; GeoB10737-3; GeoB10738-3; GeoB10739-3; GeoB10740-3; GeoB10741-3; GeoB10742-3; GeoB10743-3; GeoB10744-3; GeoB10746-3; GeoB10747-3; GeoB10748-3; GeoB10749-3; Gulf of Manfredonia; Gulf of Taranto; High Performance Liquid Chromatography (HPLC-APCI-MS); MARUM; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; MUC; MultiCorer; POS339; Poseidon; Strait of Otranto; Tricyclic glycerol dialkyl glycerol tetraether, fractional abundance
    Type: Dataset
    Format: text/tab-separated-values, 276 data points
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    DATA PANGAEA
  • 7
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    Hydrogen isotope ratios of terrestrial plant wax from ODP Hole 175-1085A (2013)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Keywords: 175-1085A; Age model; Benguela Current, South Atlantic Ocean; Calculated; Calculated, see reference(s); Center for Marine Environmental Sciences; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg175; MARUM; n-Alkane C31, δD; n-Alkane C31, δD, standard deviation; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 369 data points
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    DATA PANGAEA
  • 8
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    Carbon isotope ratios of terrestrial plant wax from ODP Hole 175-1085A (2013)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Keywords: 175-1085A; Age model; Benguela Current, South Atlantic Ocean; Calculated; Calculated, see reference(s); Center for Marine Environmental Sciences; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg175; MARUM; n-Alkane C31, δ13C; n-Alkane C31, δ13C, standard deviation; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 424 data points
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    DATA PANGAEA
  • 9
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    Pollen and age analysis of terrestrial plant wax from ODP Hole 175-1085A (2013)
    PANGAEA
    Details
    Publication Date: 2024-03-06
    Keywords: 175-1085A; Abrus; Abutilon; Acacia; Acanthaceae; Age model; Aizoaceae; Alismataceae; Allophylus; Aloe-type; Amaranthaceae/Chenopodiaceae; Anemia-type; Anthoceros; Anthospermum; Arboreal pollen; Arctotis-type; Asteraceae; Balanites; Benguela Current, South Atlantic Ocean; Bignoniaceae; Borassus-type; Boscia-type; Burkea; Buxus-type madagascaria; Calculated, see reference(s); Calligonum; Cardiospermum; Caryophyllaceae; Cassia-type; Center for Marine Environmental Sciences; Chrozophora; Chrysophyllum; Clematis-type; Cleome; Cliffortia; Coffea-type; Combretum-type; Commiphora; Compositae Liguliflorae; Compositae Tubuliflorae; Compositae Vernonieae; Corchorus; Cotula-type; Counting; Croton-type; Cucurbitaceae; Cussonia; Cyperaceae; Daisy-type; Depth, composite; Detarium; Dialium-type; Dicoma-type; Diospyros; Dodonaea viscosa; Dorstenia; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Ericaceae undifferentiated; Euclea; Euphorbia-type; Flabellaria; Flacourtia; Galium; Garcinia; Gazania-type; Gerbera-type; Gloriosa-type; Gomphrena-type; Grewia; Gunnera perpensa; Hermannia; Hibiscus-type; Hyphaene; Hypoestes type; Ilex cf.. mitis; Indeterminata; Indeterminata/varia; Ixora; Joides Resolution; Justicia-type; Klaineanthus; Kohautia; Lannea; Leg175; Leucadendron; Lithospermum; Lycopodium (Africa); Macaranga-type; Maerua-type; Mallotus; Manilkara; Marker, added; Marker, found; MARUM; Maytenus; Mezoneuron-type; Mussaenda; Myrica; Neurada; Nyctaginaceae; Olea; Olea capensis; Osmunda; Oxygonum; Papilionoideae; Parinari; Parkinsonia; Passerina montana; Paullinia; Pelargonium; Pentzia-type; Petalidium; Petersianthus macrocarpus; Phaeoceros; Phoenix; Phyllanthus; Piliostigma; Plicosepalus; Poaceae undifferentiated; Podocarpus; Pollen, total; Polycarpaea-type; Polygala; Polygonum; Polygonum senegalense-type; Protea; Prunus africana-type; Pteridium; Pteris; Restionaceae; Rhizophora; Rhus; Rhynchosia-type; Ricinus communis; Rubiaceae undifferentiated; Rytigynia; Sample code/label; Sapotaceae/Meliaceae; Sesamum; Solanum; Sorindeia-type; Spirostachys-type; Spores; Spores, monolete; Spores, monolete psilate; Spores, monolete scabrate; Spores, monolete verrucate; Spores, trilete; Spores, trilete echinate; Spores, trilete psilate; Spores, trilete reticulate; Spores, trilete scabrate; Stoebe-type; Tamarindus-type indica; Tarchonanthus/Artemisia-type; Tarenna; Tephrosia; Tetrorchidium; Thymelaeaceae; Tribulus; Trichotomosulcate reticulate; Typha angustifolia-type; Umbilicus; Volume; Welwitschia; Ximenia-type; Zanthoxylum; Ziziphus-type
    Type: Dataset
    Format: text/tab-separated-values, 11520 data points
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    DATA PANGAEA
  • 10
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    Intact and core tetraether lipids in water column profiles of suspended particulate matter off Cape Blanc, NW Africa (2013)
    PANGAEA
    Details
    Publication Date: 2024-02-02
    Keywords: 22-10; 423-2; 424-6; 426-1; 432-2; 603; 604; 609; 610; Acyclic glycerol dialkyl glycerol tetraether; Branched and isoprenoid tetraether index; Calculated from TEX86 (Kim et al., 2010); Campaign of event; Cape Blanc; Carbon, organic, total; Carbon and nitrogen and sulfur (CNS) element analyzer, Elementar, Vario EL; Center for Marine Environmental Sciences; Crenarchaeol; Crenarchaeol regio-isomer; CTD, SEA-BIRD SBE 19; DEPTH, water; Dicyclic glycerol dialkyl glycerol tetraether; Elevation of event; Event label; GeoB13611-2; GeoB13612-7; GeoB13613-1; GeoB13616-2; GeoB14201-5; GeoB14205-2; GeoB14210-1; GeoB15703-8; GeoB15704-2; GeoB15708-4; GeoB15709-4; GeoB16101-5; GeoB16102-4; GeoB16103-4; GeoB16103-9; GeoB16106-1; Glycerol dialkyl glycerol tetraether; High Performance Liquid Chromatography (HPLC-APCI-MS); In situ pump; ISP; Latitude of event; Longitude of event; Maria S. Merian; MARUM; Monocyclic glycerol dialkyl glycerol tetraether; MSM11/2; MSM18/1; Nitrate; Oxygen; PARCACTD; Particle Camera System; CTD; POS396; POS425; Poseidon; Reverse phase liquid chromatography-electrospray ionization-ms (RP-ESI-MS); Sample code/label; Sea surface temperature; Sea surface temperature, annual mean; Station label; Temperature, water; Tetraether index of 86 carbon atoms; Tricyclic glycerol dialkyl glycerol tetraether; Turbidity; Volume
    Type: Dataset
    Format: text/tab-separated-values, 2227 data points
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    DATA PANGAEA
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