Annotated record of the detailed examination of Mn deposits from DSDP Leg 40 (Hole 361)

• Main Authors: Bolli, Hans M, Ryan, William B F, Foresman, J B, Hottman, W E, Kagami, H, Longoria, J F, McKnight, B K, Melguen, M, Natland, J, Proto-Decima, F, Siesser, W G
• Format: Dataset
• Language: English
• Published: PANGAEA 1978
• Subjects: 40-361; Comment; Deep Sea Drilling Project; Deposit type; DEPTH; sediment/rock; Description; DRILL; Drilling/drill rig; DSDP; File name; Glomar Challenger; Identification; Leg40; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Position; Quantity of deposit; Sample code/label; Sediment type; Size; South Atlantic Ocean; Uniform resource locator/link to image; Visual description
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.871366; https://doi.org/10.1594/PANGAEA.871366

From a structural and morphological point of view, the continental margin of southwestern Africa is a middle-aged "pull-apart" or "passive-type" margin which was initially created during the breakup of the supercontinent of Gondwanaland in the Mesozoic. The most important objective of the Leg 40 expedition was the attainment of strata laid down when the newly formed ocean was very young and only a few hundred kilometers wide. Site 361 was drilled at the fall of continental platform into the Cape Basin, to a sub-sea floor depth of 1314 meters and yielded sediments that range in age from upper Eocene to lower Aptian and possibly slightly older.