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

S Bjorck, MJC Walker, LC Cwynar, S Johnsen, K-L Knudsen, JJ Lowe, B Wohlfarth, William Edward Newns Austin, INTIMATE Members

Research output: Contribution to journalArticlepeer-review

784 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)283-292
Number of pages10
JournalJournal of Quaternary Science
Volume13
Publication statusPublished - Jul 1998

Keywords

  • 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

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