Stable oxygen isotope ratios and grain size analyses of sediment cores from the Propeller Mound, Northeast Atlantic, supplement to: Dorschel, Boris; Hebbeln, Dierk; Rüggeberg, Andres; Dullo, Wolf-Christian; Freiwald, André (2005): Growth and Erosion of a Cold-Water Coral Covered Carbonate Mound in the Northeast Atlantic during the Late Pleistocene and Holocene. Earth and Planetary Science Letters, 233(1-2), 33-44


The first detailed stratigraphic record from a deep-water carbonate mound in the Northeast Atlantic based on absolute datings (U/Th and AMS 14C) and stable oxygen isotope records reveals that its top sediment sequences are condensed by numerous hiatuses. According to stable isotope data, mainly sediments with an intermediate signal are preserved on the mound, while almost all fully glacial and interglacial sediments have either not been deposited or have been eroded later. The resulting hiatuses reduce the Late Pleistocene sediment accumulation at Propeller Mound to amounts smaller than the background sedimentation.The hiatuses most likely result due to the sweeping of the mound in turn with the re-establishment of vigour interglacial circulation patterns after sluggish current regimes during glacials. Thus, within the discussion if internal, fluid-driven or external environmentally driven processes control the evolution of such carbonate mounds, our findings for Propeller Mound clearly point to environmental forcing as the dominant mechanism shaping deep-water carbonate mounds in the NE Atlantic during the Late Pleistocene and Holocene.

For age determination see Rueggeberg et al. (2005) datasets: doi:10.1594/PANGAEA.711998 and Dorschel et al. (2007), for Ca/Fe ratios see Dorschel et al. (2007) datasets: doi:10.1594/PANGAEA.712028

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Metadata Access
Creator Dorschel, Boris; Hebbeln, Dierk; Rüggeberg, Andres; Dullo, Wolf-Christian
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2005
Funding Reference Fifth Framework Programme
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Language English
Resource Type Supplementary Collection of Datasets; Collection
Format application/zip
Size 7 datasets
Discipline Earth System Research
Spatial Coverage (-12.773W, 52.148S, -12.753E, 52.156N); Porcupine Seabight
Temporal Coverage Begin 2000-09-18T10:57:00Z
Temporal Coverage End 2000-09-24T17:34:00Z