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Dan Hammarlund

Dan Hammarlund

Professor

Dan Hammarlund

Inter-regional correlation of palaeoclimatic records for the last Glacial-Interglacial Transition : A protocol for improved precision recommended by the INTIMATE project group

Author

  • J. John Lowe
  • Wim Z. Hoek
  • Svante Bj√∂rck
  • Dan Hammarlund
  • Barbara Wohlfarth

Summary, in English

The remit of the INTIMATE project of the INQUA Palaeoclimate Commission is to synthesise marine, terrestrial and ice-core data for the North Atlantic region during the Last Glacial-Interglacial Transition (LGIT: ca 13-1014C kyr BP; ca 15-11.5 ice-core kyr BP). A major problem, however, is the difficulty of effecting correlations at a temporal resolution that are adequate for defining 'leads' and 'lags' between the polar ice, terrestrial, marine, and atmospheric realms. The limitations of the dating and correlation methods currently employed are summarised, and new quality assurance protocols are proposed. These include recommendations on the contextual information that should accompany radiocarbon dates, procedures for radiocarbon calibration, the use of an event-stratigraphic approach in inter-regional correlations, and the more widespread use of time-parallel marker horizons (based on tephra layers, oxygen isotope stratigraphy, palaeomagnetic stratigraphy, and radiocarbon 'wiggle-matching') to underpin the geochronology and correlation of events during the LGIT. These protocols will be adopted by the INTIMATE project in future international, collaborative research and are recommended to other groups working on this important time period.

Department/s

  • Quaternary Sciences

Publishing year

2001-01-01

Language

English

Pages

1175-1187

Publication/Series

Quaternary Science Reviews

Volume

20

Issue

11

Document type

Journal article

Publisher

Elsevier

Topic

  • Geology
  • Geosciences, Multidisciplinary
  • Climate Research

Status

Published

ISBN/ISSN/Other

  • ISSN: 0277-3791