Confirmation of central volcanoes off the Icelandic coast

Leó Kristjánsson*, Kjartan Thors, H. R. Karlsson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


THE Icelandic shelf and slope region occupies much of the transition zone between the complex Icelandic hot spot and more uniform ocean-ridge areas to the north and south. This transition zone is relatively little known geologically, but in this communication we summarise some recent observations on the nature of its basement. It is well known1 that the shelf is generally narrower off the eastern half of Iceland than off its western half. This is most obvious south of Iceland, where the shelf width changes suddenly at the eastern volcanic zone; the insular slope is also steepest off south-eastern and north-eastern Iceland. Recent geophysical surveys1,2 in the southern and south-eastern shelf area have indicated the presence of an abrupt basement scarp now covered by sediments, 5-14 km inside the bathymetric shelf break (Fig. 1). This scarp is at least 1 km high and only a few km in mean width. No such basement scarp is indicated in comparable surveys conducted so far off western Iceland1-3; north-east of the island, detailed data is not yet available.

Original languageEnglish
Pages (from-to)325-326
Number of pages2
Publication statusPublished - 28 Jul 1977

Bibliographical note

Copyright 1977, Nature Publishing Group


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