(Table 2) Radiocarbon content and 14C AMS ages of planktonic foraminifera from sediment cores Louis_1900 and Louis_2023 ...

• Main Author: Aharon, Paul
• Format: Dataset
• Language: English
• Published: PANGAEA 2003
• Subjects: Event label; DEPTH, sediment/rock; Species; Globigerinoides ruber, δ13C; Δ14C; Δ14C, standard deviation; Age, dated; Age, dated standard deviation; Piston corer; Age, 14C milieu/reservoir corrected -400 yr; Ice Sheet; North Atlantic; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.841362; https://doi.pangaea.de/10.1594/PANGAEA.841362

North American freshwater runoff records have been used to support the case that climate flickers were caused by shutdowns of the ocean thermohaline circulation (THC) resulting from reversals of meltwater discharges. Inconsistencies in the documentation of these meltwater switches, however, continue to fuel the debate on the cause/s of the oscillatory nature of the deglacial climate. New oxygen and carbon isotope records from the northern Gulf of Mexico depict in exceptional detail the succession of meltwater floods and pauses through the southern routing during the interval 16 to 8.9 ka (14C years BP; ka, kiloannum). The records underscore the bimodal role played by the Gulf of Mexico as a destination of meltwater discharges from the receding Laurentide Ice Sheet. The evidence indicates that the Gulf of Mexico acted as the principal source of superfloods at 13.4, 12.6, and 11.9 ka that reached the North Atlantic and contributed significantly to density stratification, disruption of ocean ventilation, and ... : A 1 cm thick slice of sediment was used for sample processing. ...