Annotated record of the detailed examination of Mn deposits from DSDP Leg 76 (Hole 534A)

The continental edge of eastern North America is the passive margin with the oldest geological history available in the modern oceans. Rifting and seafloor spreading between the North American and African continents began in the late Triassic to Early Jurassic. A possible spreading-center jump and r...

Full description

Bibliographic Details
Main Authors: Shipboard Scientific Party, Sheridan, Robert E
Format: Dataset
Language:English
Published: PANGAEA 1983
Subjects:
76-534A
Comment
Deep Sea Drilling Project
Deposit type
DEPTH
sediment/rock
Description
DRILL
Drilling/drill rig
DSDP
File name
Glomar Challenger
Identification
Leg76
NOAA and MMS Marine Minerals Geochemical Database
NOAA-MMS
North Atlantic/BASIN
Position
Quantity of deposit
Sample code/label
Sediment type
Size
Uniform resource locator/link to image
Visual description
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.874961
https://doi.org/10.1594/PANGAEA.874961
Description
Summary:The continental edge of eastern North America is the passive margin with the oldest geological history available in the modern oceans. Rifting and seafloor spreading between the North American and African continents began in the late Triassic to Early Jurassic. A possible spreading-center jump and reorganization in spreading at the time of the Blake Spur Magnetic Anomaly (?Bathonian ) left some of the oldest crust on the western margin of the North Atlantic. Penetration and sampling of such old ocean crust and the immediately overlying pelagic sedimentary cover, consisting of Middle Jurassic and younger strata, has long been a key objective in oceanographic research. This objective was accomplished at Site 534.

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