The Crustal Structure of Rockall Plateau Microcontinent

Abstract

Interpretation of seismic refraction measurements and gravity profiles from the Rockall Plateau area of the North‐east Atlantic proves that the Plateau is a microcontinent. The depth to the Moho beneath the Plateau varies between 22 and 31 km. P wave velocities of about 6.4 and 7.1 km s−1 were obtained for the main crustal layers; these velocities may be typical of microcontinents. The Plateau is approximately in isostatic equilibrium, as too is Rockall Trough. The Trough is underlain by a thin crust, possibly of oceanic origin. Copyright © 1972, Wiley Blackwell. All rights reserved