Abstract
The investigation on the geology of the Sierra Leone Rise contains seismic, petrographic and sedimentological data from the Soviet expedition of R/V »Professor Shtokman«. New results on bottom relief and structure of the Sierra Leone Rise (SLR) are documented in Figs. 1–7. Detailled descriptions of dredge samples of trachyandesites, trachytes, trachyte tuffs, trachybasalts and their tuffs and their chemical composition (Tab. 2) together with the seismic structure of the SLR allow some assumptions on the age and origin of the Rise.
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