Radiocarbon dating of Atlantic cold-water corals over the last 32,000 years


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).

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Metadata Access
Creator Beisel, Elvira ORCID logo; Frank, Norbert ORCID logo; Robinson, Laura F ORCID logo; Lausecker, Marleen ORCID logo; Friedrich, Ronny; Therre, Steffen ORCID logo; Schröder-Ritzrau, Andrea ORCID logo; Butzin, Martin ORCID logo
Publisher PANGAEA
Publication Year 2023
Funding Reference German Research Foundation Crossref Funder ID 247825108 Massenspektrometer (LA-MC-ICPMS); German Research Foundation Crossref Funder ID 312721254 The marine 234U/238U isotopic ratio in the past; German Research Foundation Crossref Funder ID 325099762 Atlantic Radiocarbon Calibration using framework forming cold water corals
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 1840 data points
Discipline Earth System Research
Spatial Coverage (-30.206W, -9.823S, 12.781E, 38.031N); Canyon S of Timiris mound chain; Banda mounds; northern Banda slide; Alboran Sea - E-Melilla - Brittlestar Ridge I; Alboran Sea
Temporal Coverage Begin 2010-11-12T00:00:00Z
Temporal Coverage End 2018-10-27T15:21:00Z