Cruise inventory

RRS Shackleton S4/77

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Shackleton (74SF)
Cruise identifierS4/77
Cruise period1977-03-25 — 1977-04-12
StatusCompleted
Port of departureBarry, United Kingdom
Port of returnPlymouth, United Kingdom
PurposeResearch
ObjectivesTo complete the central and eastern most part of a larger survey designed to investigate the geological structure and history of the continental margin. Most specifically, detailed information on variation in the gravity and magnetic fields and the sediment distribution and crustal structures were sought. In addition, we wished to sample the geological basement and the overlying consolidated sedimentary rocks.
Chief scientistRoger A Scrutton (University of Edinburgh Department of Geology)
Cruise reportRRS Shackleton S4/77 cruise report shackleton4_77.pdf — access key 'C' (0.09 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
Track chartsRRS Shackleton S4/77 cruise track — trk1789.html
Measurements 
Geology and geophysics 
DredgeQuantity: number of deployments = 5
Core - rockQuantity: 2
Core - soft bottomQuantity: number of cores = 23
Multi-beam echosoundingQuantity: track kilometres = 2296
Single channel seismic reflectionQuantity: track kilometres = 1795
Gravity measurementsQuantity: track kilometres = 2016.828
Magnetic measurementsQuantity: track kilometres = 1794.588