Publication Date:
2024-02-02
Description:
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).
Keywords:
1057-2; 1065-1; 1070-2; 1071-2; 14C dating; 230Th/U dating; Age, 14C AMS, Mini Carbon Dating System (MICADAS); Age, dated; Age, Uranium-Thorium; Alboran Sea; Alboran Sea - E-Melilla - Brittlestar Ridge I; Angola; Area/locality; Atlantic; Azores Front; Banda mounds; Batm age; Benthic-atmosphere age; Calendar age; Calendar age, standard deviation; Campaign of event; Canyon S of Timiris mound chain; cold-water coral; Comment; Core; Date/Time of event; ELEVATION; EUROFLEETS; Event label; Fraction modern carbon; Fraction modern carbon, standard deviation; GC; GeoB14884-1; GeoB14890-2; GeoB14899-1; GeoB14904-2; GeoB14905-2; GeoB18118-1; GeoB18118-2; GeoB20908-2; GeoB20928-1; GeoB20933-1; GeoB20935-1; GeoB20953-2; GeoB20955-1; GeoB20958-1; GeoB23109-1; GeoB23110-1; GeoB23112-1; GeoB23113-1; GeoB23120-1; GeoB23121-1; GeoB23147-1; GeoB23153-1; GeoB23404-1; GeoB23415-1; GeoB23425-1; GeoB23429-1; GeoB23436-1; GeoB23437-1; Giant box corer; GKG; Grab; GRAB; Gravity corer; Laboratory code/label; Latitude of event; Location; Longitude of event; M122; M122_091-2; M122_111-1; M122_116-1; M122_118-1; M122_137-2; M122_139-1; M122_142-1; M151; M151_100-1; M151_10-1; M151_110-1; M151_114-1; M151_12-1; M151_121-1; M151_122-1; M151_13-1; M151_20-1; M151_21-1; M151_47-1; M151_53-1; M151_89-1; M151_9-1; Maria S. Merian; Marion Dufresne (1995); Mauritania; MD13-3455G; MD13-3459G; MD194; Mean values of ellipses; MeBo70; Meteor (1986); Method/Device of event; MSM16/3; MSM16/3_1051-1; MSM36; northern Banda slide; radiocarbon dating; Remotely operated vehicle SQUID; ROV SQUID; U/Th; ventilation; Δ14C; ΔΔ14C
Type:
Dataset
Format:
text/tab-separated-values, 1840 data points
