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

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 objecti...

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Bibliographic Details
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
Description
Summary: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.

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