Identification of the Icelandic Landnam tephra (AD 871 +/- 2) in Scottish fjordic sediment

Alix G. Cage*, Siwan M. Davies, Stefan Wastegard, William E. N. Austin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Certain marginal marine environments, such as the Scottish fjord systems, contain high-resolution records of palaeoclimatic change in which decadal to centennial climatic events can be resolved. This paper explores the possibilities of using tephrochronology to stratigraphically constrain the timing of such events in the Loch Sunart record (MD04-2831) on the NW coast of Scotland (UK). One tephra horizon (containing both silicic and basaltic shards) is identified within Late Holocene sediment with geochemical analyses of the basaltic shards suggesting an origin in the Veidiviitn-Baroarbunga volcanic system. Radiocarbon age estimates and stratigraphic information suggests that the AD 871 Landnam tephra is the most likely candidate. The shards identified within this horizon appear hydrated and indicate the operation of post-depositional weathering processes possibly influenced by the saline conditions of the fjord environment. (C) 2011 Elsevier Ltd and INQUA. All rights reserved.

Original languageEnglish
Pages (from-to)168-176
Number of pages9
JournalQuaternary International
Volume246
DOIs
Publication statusPublished - 20 Dec 2011

Keywords

  • LATE-QUATERNARY
  • DISSOLUTION RATES
  • ATLANTIC REGION
  • FAROE-ISLANDS
  • FALLOUT TUFFS
  • ICE CORES
  • TEPHROCHRONOLOGY
  • SCOTLAND
  • AGE
  • WATER

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