Publication Date:
2022-07-11
Description:
From reflection and refraction seismic measurements in the area of the Great Meteor-Seamount a crustal section of a part of the Great Meteor-Seamount and the adjoining deep sea area is presented. Two remarkable results can be compared with the crustal structure on the continental margin. Firstly there has been found a very distinct horizon with a p-wave velocity of 5.9-6.0 km/s, which is generally observed for the basement under the continents. This horizon has not been found in the deep sea. Secondly the Mohorovicic discontinuity (p-wave velocity 8.1 km/s) shows a distinct down dip from the deep sea to the centre of the seamount. In its central area the "Moho" has not been observed. From the topography of the "Moho" and the upper horizons the core of the Great Meteor-Seamount is assumed to be a mixture of crustal and mantle material. From the centre of the seamount to the deep sea it changes into material of the "oceanic layer". A comparison of the seismic results with magnetic measurements also points to a continental structure of the Great Meteor-Seamount.
Type:
Article
,
PeerReviewed
Format:
text
Permalink
