Beisel, Elvira; Frank, Norbert; Robinson, Laura F; Lausecker, Marleen; Friedrich, Ronny; Therre, Steffen; Schröder-Ritzrau, Andrea; Butzin, Martin (2023): Radiocarbon dating of Atlantic cold-water corals over the last 32,000 years [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.959515, In: Beisel, E et al. (2023): Cold-water coral Atlantic thermocline ventilation records over the last 32,000 years [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.959508
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Published: 2023-08-03 • DOI registered: 2023-09-01
Abstract:
The radiocarbon analysis of uranium-thorium-dated cold-water corals (CWCs) provides an excellent opportunity for qualitative reconstruction of past ocean circulation and water mass aging. While mid-depth water mass aging has been studied in the Atlantic Ocean, the evolution of the thermocline, tightly coupled to the atmosphere, is still largely unknown. Here we present a combined 14C and 230Th/U age record obtained from thermocline dwelling CWCs with partially centennial resolution over the last 32 ka at various locations in the central and east Atlantic Ocean (Azores Front, Mauritania, Angola), as well as in the Alboran Sea. Preparation for radiocarbon dating took place at the Institute of Environmental Physics, Heidelberg University, Germany (Therre et al., 2021). The samples were measured on an accelerator mass spectrometer (MICADAS) at the Curt-Engelhorn Center for Archaeometry in Mannheim, Germany (Kromer et al., 2013, Synal et al., 2007).
Keyword(s):
Related to:
Beisel, Elvira; Frank, Norbert; Robinson, Laura F; Lausecker, Marleen; Friedrich, Ronny; Therre, Steffen; Schröder-Ritzrau, Andrea; Butzin, Martin (2023): Climate induced thermocline aging and ventilation in the eastern Atlantic over the last 32.000 years. Paleoceanography and Paleoclimatology, e2023PA004662, https://doi.org/10.1029/2023PA004662
References:
Kromer, Bernd; Lindauer, Susanne; Synal, Hans-Arno; Wacker, Lukas (2013): MAMS – A new AMS facility at the Curt-Engelhorn-Centre for Achaeometry, Mannheim, Germany. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 294, 11-13, https://doi.org/10.1016/j.nimb.2012.01.015
Synal, Hans-Arno; Stocker, Martin; Suter, Martin (2007): MICADAS: A new compact radiocarbon AMS system. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 259(1), 7-13, https://doi.org/10.1016/j.nimb.2007.01.138
Therre, Steffen; Proß, L; Friedrich, Ronny; Trüssel, Martin; Frank, Norbert (2021): Heidelberg Radiocarbon Lab – Establishing a new carbon dioxide extraction line for carbonate samples. Radiocarbon, 63(3), 915-924, https://doi.org/10.1017/RDC.2021.28
Funding:
German Research Foundation (DFG), grant/award no. 312721254: The marine 234U/238U isotopic ratio in the past
German Research Foundation (DFG), grant/award no. 325099762: Atlantic Radiocarbon Calibration using framework forming cold water corals
Coverage:
Median Latitude: 22.777988 * Median Longitude: -14.137858 * South-bound Latitude: -9.823000 * West-bound Longitude: -30.206350 * North-bound Latitude: 38.031250 * East-bound Longitude: 12.781000
Date/Time Start: 2010-11-12T00:00:00 * Date/Time End: 2018-10-27T15:21:00
Minimum ELEVATION: -972 m a.s.l. * Maximum ELEVATION: -259 m a.s.l.
Event(s):
GeoB14884-1 (MSM16/3_1051-1) * Latitude: 18.963380 * Longitude: -16.868710 * Date/Time: 2010-11-12T00:00:00 * Elevation: -492.0 m * Recovery: 8.13 m * Campaign: MSM16/3 * Basis: Maria S. Merian * Method/Device: Gravity corer (GC)
GeoB14890-2 (1057-2) * Latitude: 18.646533 * Longitude: -16.728300 * Date/Time: 2010-11-13T11:29:00 * Elevation: -580.0 m * Recovery: 10.13 m * Location: Canyon S of Timiris mound chain * Campaign: MSM16/3 * Basis: Maria S. Merian * Method/Device: Gravity corer (GC) * Comment: core contains coral fragments
GeoB14899-1 (1065-1) * Latitude: 17.669850 * Longitude: -16.672150 * Date/Time: 2010-11-14T13:10:00 * Elevation: -485.0 m * Recovery: 5.1 m * Location: Banda mounds * Campaign: MSM16/3 * Basis: Maria S. Merian * Method/Device: Gravity corer (GC) * Comment: core contains coral fragments
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
1840 data points