Open AccessLithospheric Structure of the Azores Plateau from Rayleigh‐Wave Dispersion
Author(s) -
Searle R. C.
Publication year - 1976
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1976.tb00291.x
Subject(s) - geology , plateau (mathematics) , lithosphere , crust , rayleigh wave , seismology , ridge , mantle (geology) , geophysics , oceanic crust , tectonics , surface wave , paleontology , subduction , mathematical analysis , mathematics , telecommunications , computer science
Summary Rayleigh‐wave group velocities across the Azores Plateau have been determined by analysing Mid‐Atlantic Ridge earthquakes recorded on São Miguel Island. The results show that the crust of the Plateau is about 60 per cent thicker than the surrounding oceanic crust, and that the upper mantle seismic velocities are anomalously low.