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 language | English |
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Pages (from-to) | 150-160 |
Number of pages | 11 |
Journal | Comptes Rendus Geoscience |
Volume | 339 |
Issue number | 2 |
DOIs | |
Publication status | Published - 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