Annotated record of the detailed examination of Mn deposits from DSDP Leg 79 (Holes 544A and 546)

Seaward of the Mazagan Escarpment and slope is a band about 50 km wide where structures interpreted as diapirs stand like columns within a pile of sediments about 5 km thick . Dredges and cores from Vema cruise 30-13 and Valdivia cruise West Africa 1979 on the slopes of the most landward of these st...

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Bibliographic Details
Main Authors: Hinz, Karl, Winterer, Edward L
Format: Dataset
Language:English
Published: PANGAEA 1984
Subjects:
79-544A
79-546
Comment
Deep Sea Drilling Project
Deposit type
DEPTH
sediment/rock
Description
DRILL
Drilling/drill rig
DSDP
Event label
Glomar Challenger
Identification
Leg79
NOAA and MMS Marine Minerals Geochemical Database
NOAA-MMS
North Atlantic/PLATEAU
Position
Quantity of deposit
Sample code/label
Sediment type
Substrate type
Visual description
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.875091
https://doi.org/10.1594/PANGAEA.875091
Description
Summary:Seaward of the Mazagan Escarpment and slope is a band about 50 km wide where structures interpreted as diapirs stand like columns within a pile of sediments about 5 km thick . Dredges and cores from Vema cruise 30-13 and Valdivia cruise West Africa 1979 on the slopes of the most landward of these structural highs, just 10 km from the foot of the escarpment recovered fragments of sheared granite. It was hypothesized that, if this structure were a salt diapir, it might have carried upward very old sediments, dating to the earliest stages of Atlantic evolution, in the Early Jurassic or late Triassic. DSDP Leg 79, sites 544 through 547 were closely located on the structure area.

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