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  • 151-911A; AGE; Carbon, organic, total; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Element analyser CHN Rapid, Heraeus; Joides Resolution; Leg151; North Greenland Sea; Ocean Drilling Program; ODP  (1)
  • 151-911A; DRILL; Drilling/drill rig; Joides Resolution; Leg151; North Greenland Sea; Ocean Drilling Program; ODP  (1)
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  • 1
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    Unknown
    Total organic carbon (TOC) on ground bulk and carbonate-free sediment samples of ODP Hole 151-911A (2002)
    PANGAEA
    In:  Supplement to: Knies, Jochen; Matthiessen, Jens; Vogt, Christoph; Stein, Ruediger (2002): Evidence of Mid Pliocene (3 Ma) global warmth in the eastern Arctic Ocean and implications for the Svalbard/Barents Sea ice sheet during the late Pliocene and early Pleistocene. Boreas, 31(1), 82-93, https://doi.org/10.1111/j.1502-3885.2002.tb01058.x
    Details
    Publication Date: 2024-01-09
    Description: A multiproxy analysis of Hole 911A (Ocean Drilling Program (ODP) Leg 151) drilled on the Yermak Plateau (eastern Arctic Ocean) is used to investigate the behaviour of the Svalbard/Barents Sea ice sheet (SBIS) during late Pliocene and early Pleistocene (~3.0-1.7 Ma) climate changes. Contemporary with the 'Mid-Pliocene (~3 Ma) global warmth' (MPGW), a warmer period lasting ~300 kyr with seasonally ice-free conditions in the marginal eastern Arctic Ocean is assumed to be an important regional moisture source, and possibly one decisive trigger for intensification of the Northern Hemisphere glaciation in the Svalbard/Barents Sea area at ~2.7 Ma. An abrupt pulse of ice-rafted debris (IRD) to the Yermak Plateau at ~2.7 Ma reflects distinct melting of sediment-laden icebergs derived from the SBIS and may indicate the protruding advance of the ice sheet onto the outer shelf. Spectral analysis of the total organic carbon (TOC) record being predominantly of terrigenous/fossil-reworked origin indicates SBIS and possibly Scandinavian Ice Sheet response to incoming solar radiation at obliquity and precession periodicities. The strong variance in frequencies near the 41 kyr obliquity cycle between 2.7 and 1.7 Ma indicates, for the first time in the Arctic Ocean, a close relationship of SBIS growth and decay patterns to the Earth's orbital obliquity amplitudes, which dominated global ice volume variations during late Pliocene/early Pleistocene climate changes.
    Keywords: 151-911A; AGE; Carbon, organic, total; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Element analyser CHN Rapid, Heraeus; Joides Resolution; Leg151; North Greenland Sea; Ocean Drilling Program; ODP
    Type: Dataset
    Format: text/tab-separated-values, 606 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Neodymium, lead and strontium isotope data of down core leachate and bulk digest of ODP Hole 151-911A (2016)
    PANGAEA
    In:  Supplement to: Teschner, Claudia; Frank, Martin; Haley, Brian A; Knies, Jochen (2016): Plio-Pleistocene evolution of water mass exchange and erosional input at the Atlantic-Arctic gateway. Paleoceanography, 31(5), 582-599, https://doi.org/10.1002/2015PA002843
    Details
    Publication Date: 2024-01-09
    Description: Water mass exchange between the Arctic Ocean and the Norwegian-Greenland Seas has played an important role for the Atlantic thermohaline circulation and Northern Hemisphere climate. We reconstruct past water mass mixing and erosional inputs from the radiogenic isotope compositions of neodymium (Nd), lead (Pb), and strontium (Sr) at Ocean Drilling Program site 911 (leg 151) from 906 m water depth on Yermak Plateau in the Fram Strait over the past 5.2 Myr. The isotopic compositions of past bottom waters were extracted from authigenic oxyhydroxide coatings of the bulk sediments. Neodymium isotope signatures obtained from surface sediments agree well with present-day deepwater epsilon-Nd signature of -11.0 ± 0.2. Prior to 2.7 Ma the Nd and Pb isotope compositions of the bottom waters only show small variations indicative of a consistent influence of Atlantic waters. Since the major intensification of the Northern Hemisphere Glaciation at 2.7 Ma the seawater Nd isotope composition has varied more pronouncedly due to changes in weathering inputs related to the waxing and waning of the ice sheets on Svalbard, the Barents Sea, and the Eurasian shelf, due to changes in water mass exchange and due to the increasing supply of ice-rafted debris (IRD) originating from the Arctic Ocean. The seawater Pb isotope record also exhibits a higher short-term variability after 2.7 Ma, but there is also a trend toward more radiogenic values, which reflects a combination of changes in input sources and enhanced incongruent weathering inputs of Pb released from freshly eroded old continental rocks.
    Keywords: 151-911A; DRILL; Drilling/drill rig; Joides Resolution; Leg151; North Greenland Sea; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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