Climatic Change on the Iberian Peninsula Recorded in a 30,000-Yr Pollen Record from Lake Banyoles

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Abstract

The Banyoles lacustrine sequence shows that the vegetational history of the northeastern Iberian Peninsula during the last 30,000 yr follows the North Atlantic pattern of climatic oscillations. The Banyoles pollen diagram, supported by two calibrated 14C dates and nine U/Th dates, shows a clear interstadial event between 30,000 and 27,000 yr B.P., a Pleniglacial period with minor oscillations that ended abruptly ca. 14,420 ± 410 yr B.P., and a late-glacial sequence that records the classical stages described in Northern Europe: the Bølling-Allerød Interstade, the Younger Dryas event at 12,000 yr B.P. (U-series age), and a short warming phase between the Younger Dryas and the last cold event (dated at 11,000 yr B.P., U-series age).

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Most cited references 11

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Grande Pile Peat Bog: A Continuous Pollen Record for the Last 140,000 Years

Geneviève M. Woillard (1978)

In the Southern Vosges Mountains, Northeastern France, the Grande Pile peat bog (47° 44′ N, 6°30′14″ E, 330-m altitude, about 20 m deep) gives a continuous pollen sequence for the last 140,000 years, contrary to others in Northwestern and Central Europe which are all truncated. For the first time, in a region close to the type locatity for the Eem deposits and close to the Würm and Riss stratotypes, palynology demonstrates a complete “glacial-interglacial cycle” offering the possibility of studying the rapid degradation of vegetation at the end of the Last Interglacial, perhaps in sufficient detail to be useful soon in long-term global climate forecasting. The Grande Pile pollen sequence shows, between the classical Eemian Interglacial and the Last (Würm) Glaciation, two temperate intervals interpreted as interglacials (palynological definition): St. Germain I and St. Germain II. These are separated by two very cold phases, probably glacial: Melisey I and Melisey II. This sequence, not easily correlated with the classical European chronology of Woldstedt, agrees well with Frenzel's chronology and, therefore, makes the synchrony of the Alpine glaciations with those of Northern Germany questionable. An attempt is made to correlate the Grande Pile pollen sequence with other chronologies (e.g., deep sea curves based on foraminiferal fauna, oxygen isotopes, and carbonate content, Barbados sea levels, Rocky Mountains sequence) that span the period between 140,000 and 70,000 years BP.