Climatic fluctuations recorded in the sediment fillings of Loch Sunart (northwestern Scotland) since 20,000 BP.

Zohra Mokeddem, Agnes Baltzer, Martine Clet-Pellerin, Anne Veronique Walter-Simonnet, C Richard Bates, Yvon Balut, Chantal Bonnot-Courtois

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Over the last 20,000 yr, Loch Sunart has accumulated an important record of Late Pleistocene and Holocene sedimentation characteristic of sea lochs on the western coast of Scotland. A seismic survey conducted using a Seistec Boomer system has demonstrated five distinct sediment-acoustic facies in the loch. These facies have been correlated with sediment sequences identified in a long Calypso core (12 m) acquired from the RV Marion Dufresne. Grain-size and pollen analyses, accompanied with three C-14 dates, have yielded information on the patterns of sedimentation since the Late Glacial Maximum. In addition, these data have identified three significant cooling events since the Younger Dryas: 8200, 5500 and 3500 cal. yr BP and. the Little Ice Age.

Original languageEnglish
Pages (from-to)150-160
Number of pages11
JournalComptes Rendus Geoscience
Volume339
Issue number2
DOIs
Publication statusPublished - Feb 2007

Keywords

  • sedimentation
  • pollen
  • C-14
  • Seistec Boomer
  • seismic facies
  • cooling events
  • palaeoenvironments
  • RADIOCARBON AGE CALIBRATION
  • GLACIER FLUCTUATIONS
  • WESTERN SCOTLAND
  • NORTH-ATLANTIC
  • SEA LOCH
  • HOLOCENE
  • EVENT
  • VARIABILITY

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