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Geomorphological evidence towards a de-glacial control on volcanism

Auteur(s) et Affiliation(s)

CARRIVICK, J.L.
School of Geography, Univ., Leeds, Royaume-Uni
RUSSELL, A.J.
School of Geography, Politics and Sociology, Univ., Newcastle Upon Tyne, Royaume-Uni
RUSHMER, E.L.
Jacobs, Leeds, Royaume-Uni
TWEED, F.S.
Geography Dep., Staffordshire Univ., Stoke on Trent, Royaume-Uni
MARREN, P.M.
Dep. of Forest Resources Management, Univ. British Columbia, Vancouver, Canada
DEEMING, H.
Dep. of geography, Univ., Lancaster, Royaume-Uni
LOWE, O.J.
Environment Agency, Sentinel House, Lichfield, Royaume-Uni


Description :
The AA. describe and explain a regional topographic and geomorphic expression of sub-glacial volcanism, namely that at Kverkfjöll, Iceland. This area comprises a series of parallel sub-glacially-erupted volcanic edifices, which together give excellent 3D geological exposure. These ridges are orientated north-south or along the most probable line of LGM ice margin retreat. The AA. combine topographic and geomorphic observations to explain the changing style of volcanism in space, and attribute this to the recession and downwasting of the LGM ice sheet. Their observations suggest that as the overlying ice sheet became thinner volcanic activity became more explosive. For northern Iceland, their proposed sequence of landscape development suggests 2 major glacial advances during the Holocene, at least one of which at Kverkfjöll probably coincided with volcanic activity and a jökulhlaup.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2009, vol. 34, n°. 8, p. 1164-1178, nombre de pages : 15, Références bibliographiques : 1,5 p.

Date :
2009

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais
Droits :
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