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Dorschel, Boris; Hebbeln, Dierk; Rüggeberg, Andres; Dullo, Wolf Christian (2005): Stable oxygen isotope ratios and grain size analyses of sediment cores from the Propeller Mound, Northeast Atlantic. PANGAEA, https://doi.org/10.1594/PANGAEA.711985, 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, https://doi.org/10.1016/j.epsl.2005.01.035

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Abstract:
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.
Related to:
Dorschel, Boris (2003): Late Quaternary Development of a deep-water Carbonate Mound in the northeast Atlantic. PhD Thesis, Elektronische Dissertationen an der Staats- und Universitätsbibliothek Bremen, Germany, urn:nbn:de:gbv:46-diss000006917
Dorschel, Boris; Hebbeln, Dierk; Rüggeberg, Andres; Dullo, Wolf Christian (2007): Carbonate budget of a cold-water coral carbonate mound: Propeller Mound, Porcupine Seabight. International Journal of Earth Sciences, 96(1), 73-83, https://doi.org/10.1007/s00531-005-0493-0
Rüggeberg, Andres; Dorschel, Boris; Dullo, Wolf Christian; Hebbeln, Dierk (2005): Sedimentary patterns in the vicinity of a carbonate mound in the Hovland Mound Province, northern Porcupine Seabight. In: Freiwald, A & Roberts, JM (eds.), 2005, Cold-water Corals and Ecosystems, Springer-Verlag, Berlin, Heidelberg, 87-112, https://doi.org/10.1007/3-540-27673-4_5
Rüggeberg, Andres; Dullo, Wolf Christian; Dorschel, Boris; Hebbeln, Dierk (2007): Environmental changes and growth history of a cold-water carbonate mound (Propeller Mound, Porcupine Seabight). International Journal of Earth Sciences, 96(1), 57-72, https://doi.org/10.1007/s00531-005-0504-1
Coverage:
Median Latitude: 52.153167 * Median Longitude: -12.762710 * South-bound Latitude: 52.147683 * West-bound Longitude: -12.773000 * North-bound Latitude: 52.156317 * East-bound Longitude: -12.752633
Date/Time Start: 2000-09-18T10:57:00 * Date/Time End: 2000-09-24T17:34:00
Event(s):
GeoB6718-2 (POS478-2) * Latitude: 52.156317 * Longitude: -12.752633 * Date/Time: 2000-09-18T10:57:00 * Elevation: -900.0 m * Recovery: 4.5 m * Location: Porcupine Seabight * Campaign: POS265 * Basis: Poseidon * Device: Gravity corer (Kiel type) (SL)
GeoB6728-1 (POS488-1) * Latitude: 52.154000 * Longitude: -12.765333 * Date/Time: 2000-09-24T14:47:00 * Elevation: -749.0 m * Recovery: 5.9 m * Location: Porcupine Seabight * Campaign: POS265 * Basis: Poseidon * Device: Gravity corer (Kiel type) (SL)
GeoB6729-1 (POS489-1) * Latitude: 52.153850 * Longitude: -12.773000 * Date/Time: 2000-09-24T16:11:00 * Elevation: -711.0 m * Recovery: 4.6 m * Location: Porcupine Seabight * Campaign: POS265 * Basis: Poseidon * Device: Gravity corer (Kiel type) (SL)
Comment:
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
Size:
7 datasets

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