Two-step deglaciation at the oxygen isotope stage 6/5e transition: the Zeifen-Kattegat climatic oscillation

• Comparison of marine, lacustrine, and terrestrial records from twenty-four sites suggests the existence of a 'Younger Dryas'-type climate oscillation just prior to the Oxygen Isotope Stage 6/5e boundary. These records include results from biostratigraphic, pedostratigraphic, and speleothem studies, as well as analyses of stable isotope compositions of marine records and ice cores. The climate oscillation is named after the warm Zeifen Interstadial and the cold Kattegat Stadial. The Zeifen Interstadial may be related to a major meltwater pulse in the Baffin Bay-Labrador Sea-Norwegian Sea region. The climate oscillation is presumably in part a result of a variation in ocean circulation, especially in the strength of the North Atlantic Drift, but changes in the atmospheric circulation also played an important role. The geographically widespread distribution of the oscillation suggests that the two-step deglaciation influenced both the northern and southern hemispheres.

Ämnesord

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)

NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Geology (hsv//eng)

Nyckelord

YOUNGER DRYAS EVENT; STABLE ISOTOPE; COLD SPELL; DEEP-WATER; STRATIGRAPHY; RECORD; AFRICA; YUKON

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