Annotated record of the detailed examination of Mn deposits from DSDP Leg 80 (Holes 548, 548A, 550, 551)

Deep Sea Drilling Project Leg 80 investigated the structural evolution and depositional history of the Goban Spur and the adjacent Porcupine Abyssal Plain. From the results of DSDP Leg 48, structural relationships and fossil assemblages indicated that the rifting of the Armorican margin created subm...

Full description

Bibliographic Details
Main Authors: de Graciansky, Pierre C, Poag, C Wylie
Format: Dataset
Language:English
Published: PANGAEA 1985
Subjects:
80-548
80-548A
80-550
80-551
Comment
Deep Sea Drilling Project
Deposit type
DEPTH
sediment/rock
Description
DRILL
Drilling/drill rig
DSDP
Event label
File name
Glomar Challenger
Identification
Leg80
NOAA and MMS Marine Minerals Geochemical Database
NOAA-MMS
North Atlantic/ESCARPMENT
North Atlantic/PLAIN
North Atlantic/SPUR
Position
Quantity of deposit
Sample code/label
Sediment type
Size
Substrate type
Uniform resource locator/link to image
Visual description
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.875096
https://doi.org/10.1594/PANGAEA.875096
Description
Summary:Deep Sea Drilling Project Leg 80 investigated the structural evolution and depositional history of the Goban Spur and the adjacent Porcupine Abyssal Plain. From the results of DSDP Leg 48, structural relationships and fossil assemblages indicated that the rifting of the Armorican margin created submarine relief of as much as 2000 m. Seafloor spreading began no later than the early Aptian and was accompanied by rapid crustal subsidence in the form of regional downwarping and tilting. Sites 548 to 551 were consequently placed along a transect across the continent/ocean boundary on the sediment-starved Goban Spur in order to further explore this particular structure.

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