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Wienberg, Claudia; Frank, Norbert; Mertens, Kenneth Neil; Stuut, Jan-Berend W; Marchant, Margarita; Fietzke, Jan; Mienis, Furu; Hebbeln, Dierk (2011): Glacial cold-water coral: ages, isotope concentrations and ratios. doi:10.1594/PANGAEA.770171,
Supplement to: Wienberg, C et al. (2010): Glacial cold-water corals growth in the Gulf of Cádiz: Implications of increased palaeo-productivity. Earth and Planetary Science Letters, 298, 405-416, doi:10.1016/j.epsl.2010.08.017

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Abstract:
A set of 40 Uranium-series datings obtained on the reef-forming scleractinian cold-water corals Lophelia pertusa and Madrepora oculata revealed that during the past 400 kyr their occurrence in the Gulf of Cádiz (GoC) was almost exclusively restricted to glacial periods. This result strengthens the outcomes of former studies that coral growth in the temperate NE Atlantic encompassing the French, Iberian and Moroccan margins dominated during glacial periods, whereas in the higher latitudes (Irish and Norwegian margins) extended coral growth prevailed during interglacial periods. Thus it appears that the biogeographical limits for sustained cold-water coral growth along the NE Atlantic margin are strongly related to climate change. By focussing on the last glacial-interglacial cycle, this study shows that palaeo-productivity was increased during the last glacial. This was likely driven by the fertilisation effect of an increased input of aeolian dust and locally intensified upwelling. After the Younger Dryas cold event, the input of aeolian dust and productivity significantly decreased concurrent with an increase in water temperatures in the GoC. This primarily resulted in reduced food availability and caused a widespread demise of the formerly thriving coral ecosystems. Moreover, these climate induced changes most likely caused a latitudinal shift of areas withoptimum coral growth conditions towards the northern NE Atlantic where more suitable environmental conditions established with the onset of the Holocene.
Coverage:
Median Latitude: 35.653215 * Median Longitude: -7.082690 * South-bound Latitude: 34.991500 * West-bound Longitude: -7.404333 * North-bound Latitude: 36.183000 * East-bound Longitude: -6.787500
Date/Time Start: 2003-12-02T08:30:00 * Date/Time End: 2006-05-14T16:36:00
Minimum DEPTH, sediment/rock: 0.03 m * Maximum DEPTH, sediment/rock: 5.20 m
Event(s):
GeoB9018-1 * Latitude Start: 36.183000 * Longitude Start: -7.306167 * Latitude End: 36.183000 * Longitude End: -7.306167 * Date/Time Start: 2003-12-02T08:30:00 * Date/Time End: 2003-12-02T09:05:00 * Elevation: -702.0 m * Location: Hesperides mud volcano * Campaign: SO175 (GAP) * Basis: Sonne * Device: Gravity corer (GC) * Comment: 3.47m
GeoB9031-1 * Latitude Start: 36.094667 * Longitude Start: -7.402833 * Latitude End: 36.095833 * Longitude End: -7.388000 * Date/Time Start: 2003-12-04T17:35:00 * Date/Time End: 2003-12-04T18:20:00 * Elevation: -897.0 m * Location: Faro/Almazan mud volcano * Campaign: SO175 (GAP) * Basis: Sonne * Device: Gravity corer (GC) * Comment: 4.84m
GeoB9032-1 * Latitude Start: 36.090500 * Longitude Start: -7.404333 * Latitude End: 36.092500 * Longitude End: -7.392833 * Date/Time Start: 2003-12-04T18:30:00 * Date/Time End: 2003-12-04T19:09:00 * Elevation: -843.0 m * Location: Faro/Almazan mud volcano * Campaign: SO175 (GAP) * Basis: Sonne * Device: Gravity corer (GC) * Comment: 2.20m
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Comment of eventComment
3Latitude of eventLatitude
4Longitude of eventLongitude
5DEPTH, sediment/rockDepthmGeocode
6CoralCoralWienberg, Claudia
7Age, relativeAge relkaWienberg, Claudia
8Age, standard deviationAge std dev±Wienberg, Claudia
9Uranium 238238Umg/kgWienberg, Claudia
10Uranium 238, standard deviation238U std dev±Wienberg, Claudia
11Thorium 232232Thµg/kgWienberg, Claudia= ppb as original published
12Thorium 232, standard deviation232Th std dev±Wienberg, Claudia
13delta 234 Uraniumd234Uper milWienberg, Claudia
14delta 234 Uranium, standard deviationd234U std dev±Wienberg, Claudia
Size:
356 data points

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