Avedik, Felix and Hieke, Werner (1981) Reflection seismic profiles from the Central Ionian Sea (Mediterranean) and their geodynamic interpretation. Meteor Forschungsergebnisse: Reihe C, Geologie und Geophysik, 34 . pp. 49-64.

Text Avedik_F_1981_C.pdf - Reprinted Version Restricted to Registered users only Download (2MB) | Contact

Abstract

Five reflection seismic profiles from the borderland between Messina Abyssal Plain and Malta Ridge (= Medina Rise), recorded during "Meteor" cruise no. 50 in 1978, are described. The subbottom/bottom structures are interpreted as a pattern of broad grabens and intercalated SW-NE striking narrow horsts. Within the grabens great thicknesses of Messinian evaporites as well as of Quaternary turbiditic sediments, depending on the respective differential sinking, were accumulated. Some of the horsts rise above the surrounding seafloor. Ontop of the horsts, being mainly composed of pre-Messinian series, only little or no evaporites at all were deposited. The cover of Quaternary sediments depends on the position of the horst with respect to the seafloor. The thickness of Pliocene sediments is constant within the whole studied area. The authors conclude from the observations that the pattern of horsts and grabens acted already during Messinian time producing the variable thickness of the evaporite layer. The relative movements between grabens and horsts as well as a general sinking of the whole area must have acted also in Pliocene and Quaternary time.

Actions (login required)

View Item