1. Coastal and Marine Hazards and Resources
2. Geoscience Data System

Field Activity 1981-039-FA

Identifier	1981-039-FA
Alternate names	IPOD 80
Purpose	DSDP Leg 80 investigated the structural evolution and depositional history of the Goban Spur and adjacent Porcupine Abyssal Plain. Structural relationships and fossil assemblages indicate the rifting of the Armorican margin created submarine relief of as much as 2,000 m. Sea-floor spreading began no later than early Aptian, accompanied by rapid crustal subsidence, and regional downwarping and tilting. Subsidence was greatest near ocean/continent juncture, diminishing near the thicker continental crust. Subsidence has been minimal since Eocene, influenced by oceanic circulation and water chemistry.
Location	Goban Spur, Pendragon Escarpment, Porcupine Abyssal Plain, Irish Continental Shelf, Northeast Atlantic;
Summary	Wells: 4 (#548, 548A, 549, 549A, 550, 550A, 550B, 551); Cores: 306, recovered 296 (2397.5 m cored, 1493 m recovered).
Info derived	Samples and chemical analysis; Grain size analysis; Morphology;
Comments	Original Center People field contained: C. Wylie Poag - co-Chief Scientist; Leslie Reynolds - sedimentology/paleo assistant. Project = Deep Sea Drilling Project (DSDP), Deep Sea Drilling Project (DSDP)
URL	http://www.deepseadrilling.org/80/dsdp_toc.htm
Platform	Glomar Challenger 400 feet
Itinerary	Start Brest, France 1981-05-30 End Southampton, England 1981-07-22 Days in the field 46
Bounds	West -12.4985 East -11.836 North 49.08817 South 48.51517 Show or hide mapHide layers