Annotated record of the detailed examination of Mn deposits from DSDP Leg 77 (Holes 535, 536, 537, 538A)

• Main Authors: Buffler, Richard T, Schlager, Wolfgang
• Format: Dataset
• Language: English
• Published: PANGAEA 1984
• Subjects: 77-535; 77-536; 77-537; 77-538A; Comment; Deep Sea Drilling Project; Deposit type; DEPTH; sediment/rock; Description; DRILL; Drilling/drill rig; DSDP; Event label; File name; Glomar Challenger; Gulf of Mexico/BASIN; Gulf of Mexico/KNOLL; Gulf of Mexico/SLOPE; Identification; Leg77; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; 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.875040; https://doi.org/10.1594/PANGAEA.875040

The drilling of Leg 77 is part of an overall program by the JOIDES Passive Margin Panel to study the evolution of the western North Atlantic passive margin. The history of the central North Atlantic is probably the best known of all ocean basins, but the origin and history of the neighboring Gulf of Mexico are very much uncertain. Some geologists consider it the oldest ocean basin still in existence (Paleozoic), but others doubt the existence of "true" oceanic crust under the central Gulf. The nature and origin of the transitional crust and the overlying Mesozoic sedimentary sequences in the southeastern Gulf, therefore, was the main objective of Leg 77.