Annotated record of the detailed examination of Mn deposits from DSDP Leg 37 (Holes 332B, 334)

• Main Authors: Aumento, Fabrizio, Melson, William G, Robinson, Paul T
• Format: Dataset
• Language: English
• Published: PANGAEA 1977
• Subjects: 37-332B; 37-334; Comment; Deep Sea Drilling Project; Deposit type; DEPTH; sediment/rock; Description; DRILL; Drilling/drill rig; DSDP; Event label; Glomar Challenger; Identification; Leg37; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; North Atlantic/BASIN; North Atlantic/VALLEY; Position; Quantity of deposit; Sample code/label; Sediment type; Substrate type; Visual description; North Atlantic
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.870513; https://doi.org/10.1594/PANGAEA.870513

DSDP Leg 337 was planned as an attemp at deep penetration of the igneous section of the oceanic crust on the western flank of the FAMOUS (Franco- American Mid-Ocean Undersea Study) area of the Mid-Atlantic Ridge at 36°N. Site 332 is located in Deep Drill Valley approximately 30 km west of the axis of the Mid-Atlantic Ridge at 36°52'N latitude. The principal goal at this site was deep penetration into layer 2 of the ocean crust by multiple re-entry. Site 334 was drilled on a steep east-facing slope in a small, deep basin near the middle of magnetic anomaly 5. In this area, breccias with gabbro and peridotite clasts in a nannofossil-foram ooze matrix are interlayered with the plutonic rocks and may reflect exposure of a melange in or near the Median Valley of the Mid- Atlantic Ridge prior to burial by later basaltic extrusions.