Geodiversitas
20 (2) - Pages 155-228During the Leg 29 of the Marion Dufresne (1981), thirty-four piston cores were collected in the metalliferous sediments deeps of the Central Rift Valley of the Red Sea (Atlantis II, Nereus and Commission I). The main amorphous or crystallized minerals from these sediments are recognized and permit proposing a vertical distribution of sedimentological facies in regard to lithological sequences of Backer & Richter (1973). A chemical analysis of Ni, Cu, Co, Fe, Mn, Pb and Zn is used to identify the origin of these major elements. Metric, centimetric and even millimetric bedding of deposits is related to stratification and homogenization processes within the hot brines pool.
Red Sea, deeps, metalliferous sediments, beddings, hot brines, oxy-hydroxydes, sulphides, sulphates, carbonates, authigenic silicates