Extension of the 14C Calibration Curve to ca. 40,000 cal BC by Synchronizing Greenland 18O/16O Ice Core Records and North Atlantic Foraminifera Profiles: A Comparison with U/Th Coral Data

• Published in: Radiocarbon
• Main Authors: Jöris, Olaf, Weninger, Bernhard
• Format: Conference Object
• Language: English
• Published: Department of Geosciences, The University of Arizona 1998
• Subjects: GRIP; Deep Sea Drilling Project; DSDP Site 609; IPOD; Leg 104; Leg 94; Ocean Drilling Program; ODP Site 644; V23 81; O 18 O 16; Th U; Arctic region; Greenland; Anthozoa; Coelenterata; GISP2; ice cores; Atlantic Ocean; North Atlantic; calibration; oxygen; Foraminifera; Protista; isotope ratios; microfossils; Pleistocene; time scales; Cenozoic; Quaternary; C 14; carbon; isotopes; radioactive isotopes; Invertebrata; stable isotopes; absolute age; Arctic; Foraminifera*; ice core
• Online Access: http://hdl.handle.net/10150/653603; https://doi.org/10.1017/S0033822200018373

From the 16th International Radiocarbon Conference held in Gronigen, Netherlands, June 16-20, 1997. For a better understanding of pre-Holocene cultural history, archaeologists are in need of an absolute time scale that can be confirmed and duplicated by different dating methods. Proxy data available from archaeological sites do not, in themselves, allow much reflection on absolute age. Even when founded on supporting radiocarbon data, Paleolithic chronologies that are beyond the actual limits of 14C calibration still remain relative ones, and thus are often quite tentative. Lacking the possibility of calibration for the Paleolithic, archaeologists often attempt to correlate their data with different time scales from different archives that are thought to be absolute or calendric. The main result of this paper is that the GISP2 and U/Th chronologies duplicate each other over their entire range of data overlap, while other time scales (i.e., GRIP, most varve sites) differ significantly. The context-derived 14C calibration curve provides a large potential to correlate the various climate archives as recorded in ice cores and deep ocean drillings with terrestrial sequences. This material was digitized as part of a cooperative project between Radiocarbon and the University of Arizona Libraries. The Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact [e-mail] for further information. Migrated from OJS platform February 2021