Publication detail

Driftwood in the Eemian interglacial lacustrine unit from the Faroe Islands and its possible source areas: palaeobotanical and ichnological analysis

POKORNÝ, R. KOUTECKÝ, V. BJÖRCK, S. KRMÍČEK, L. ÁRTING, U. E. ŠTOFIK, M.

Original Title

Driftwood in the Eemian interglacial lacustrine unit from the Faroe Islands and its possible source areas: palaeobotanical and ichnological analysis

Type

journal article in Web of Science

Language

English

Original Abstract

The coastal cliffs in Klaksvík (Bordoyar Bay) are the only known locality with Eemian sediments in the Faroe Islands. Previous studies carried out there focused on the sedimentology, tephra chemistry, paleoecology including aquatic environment, or the age of the deposits. In the lacustrine, clayey to silty gyttja we collected scattered wood fragments, identified as Larix sp., Pinus sp., Taxus sp. and Betulaceae? In addition, these wood remains contain numerous trace fossils, made by marine wood-boring bivalves (Teredolites longissimus), which together with a discussion about the areal extent of the identified tree species leads us to conclude that they are non-native, i.e. driftwood. Northern Siberia is usually regarded as the most likely source area for driftwood in the eastern North Atlantic region. We combined the approximate transport distance from the areal extent of the wood with the main directions of marine currents in the relevant section of the North Atlantic. Adding the known average marine current velocities during the penultimate interglacial resulted in 130-200 days for transport from North America and 350-1100 days from Siberia. Comparing this with the maximal buoyancy period for the identified tree species, we conclude that the Faroese driftwood may originate not only from Siberia, but also from the eastern coast of North America, especially from the region around the Great Lakes, as well as from western Europe.

Keywords

Faroe Islands; Pleistocene; driftwood; palaeobotany; Teredolites

Authors

POKORNÝ, R.; KOUTECKÝ, V.; BJÖRCK, S.; KRMÍČEK, L.; ÁRTING, U. E.; ŠTOFIK, M.

Released

25. 6. 2018

Publisher

Taylor & Francis

Location

111 RIVER ST, HOBOKEN 07030-5774, USA, NJ

ISBN

0300-9483

Periodical

BOREAS

Year of study

47

Number

4

State

Kingdom of Denmark

Pages from

1230

Pages to

1243

Pages count

14

URL

https://onlinelibrary.wiley.com/doi/abs/10.1111/bor.12332

BibTex

@article{BUT150705,
  author="Richard {Pokorný} and Vít {Koutecký} and Svante {Björck} and Lukáš {Krmíček} and Uni {Árting} and Marcel {Štofik}",
  title="Driftwood in the Eemian interglacial lacustrine unit from the Faroe Islands and its possible source areas: palaeobotanical and ichnological analysis",
  journal="BOREAS",
  year="2018",
  volume="47",
  number="4",
  pages="1230--1243",
  doi="10.1111/bor.12332",
  issn="0300-9483",
  url="https://onlinelibrary.wiley.com/doi/abs/10.1111/bor.12332"
}