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Springer (part of Springer Nature), Geo-Marine Letters, 1(18), p. 19-25

DOI: 10.1007/s003670050047

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A geophysical survey of the De Gerlache Seamounts: Preliminary results

Journal article published in 1998 by Rick A. Hagen, Karsten Gohl ORCID, Rainer Gersonde, Gehard Kuhn ORCID, David Volker, V. N. Kodagali
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The De Gerlache Seamounts actually consist of two medium-sized guyots, with summits at depths of 350-600 m. Acoustic profiler data show no significant sediment on these guyots. Alkaline basalts dredged from the summit of the eastern guyot yield K/Ar ages between 20.1 ~c 1.0 and 23.2 ~c 1.2 Ma. Basement ridges and sediment-filled troughs between the guyots are associated with the prominent gravity anomaly extending north from the Antarctic margin. This structure possibly played a role in the guyot formation, however, the question of how the De Gerlache Seamounts are related to this gravity anomaly remains uncertain.