An event stratigraphy for the last Termination in the North Atlantic region based on the Greenland ice-core record: a proposal by the INTIMATE group

• Main Authors: Bjorck, S, Walker, MJC, Cwynar, LC, Johnsen, S, Knudsen, K-L, Lowe, JJ, Wohlfarth, B, Austin, William Edward Newns
• Format: Article in Journal/Newspaper
• Language: English
• Published: 1998
• Subjects: GRIP ice-core; stratotype; Last Termination; event stratigraphy; Greenland; North Atlantic region; GLACIAL-INTERGLACIAL TRANSITION; YOUNGER DRYAS EVENT; RADIOCARBON-DATES; LAKE-SEDIMENTS; GLACIAL/INTERGLACIAL TRANSITION; ENVIRONMENTAL-CHANGE; SNOW ACCUMULATION; CLIMATIC CHANGES; C-14; CALIBRATION; Greenland ice core; GRIP; ice core; North Atlantic
• Online Access: https://risweb.st-andrews.ac.uk/portal/en/researchoutput/an-event-stratigraphy-for-the-last-termination-in-the-north-atlantic-region-based-on-the-greenland-icecore-record-a-proposal-by-the-intimate-group(559e50e9-2b6d-4af8-9503-58fccd1d02a9).html; http://www.scopus.com/inward/record.url?scp=0031790458&partnerID=8YFLogxK

It is suggested that the GRIP Greenland ice-core should constitute the stratotype for the Last Termination. Based on the oxygen isotope signal in that core, a new event stratigraphy spanning the time interval from ca. 22.0 to 11.5 k GRIP yr BP (ca. 19.0-10.0 k C-14 yr BP) is proposed for the North Atlantic region. This covers the period from the Last Glacial Maximum, through Termination 1 of the deep-ocean record, to the Pleistocene-Holocene boundary, and encompasses the Last Glacial Late-glacial of the traditional northwest European stratigraphy. The isotopic record for this period is divided into two stadial episodes, Greenland Stadials 1 (GS-1) and 2 (GS-2), and two interstadial events, Greenland Interstadials 1 (GI-1) and 2 (GI-2). In addition, GI-1 and GS-2 are further subdivided into shorter episodes. The event stratigraphy is equally applicable to ice-core, marine and terrestrial records and is considered to be a more appropriate classificatory scheme than the terrestrially based radiocarbon-dated chronostratigraphy that has been used hitherto. (C) 1998 John Wiley & Sons, Ltd.