RRS Charles Darwin CD27

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Charles Darwin (74AB)
Cruise identifierCD27
Cruise period1987-08-31 — 1987-09-24
Port of departureMuscat, Oman
Port of returnMuscat, Oman
ObjectivesGeological investigation into the mapping & sedimentology of the mid Indus Sub Fan. This was the follow up to cruise 20, with the aim of mapping selected areas in more detail using seismic methods and to carry out intensive sediment sampling within these areas. There was particular interest in the huge channels (up to 1km wide and 100m deep) that meander over the surface of the fan and look very similar to river floodplains on land.
Chief scientistAdrian Cramp (University of Wales Swansea Natural Sciences)
Cruise reportRRS Charles Darwin CD27 cruise report cd27.pdf (0.49 MB) 
Ocean/sea areas 
GeneralIndian Ocean
Arabian Sea
SpecificOman Basin, Murray Ridge, Indus Fan
Track chartsRRS Charles Darwin CD27 cruise track — trk3315.html
Geology and geophysics 
Core - soft bottomQuantity: number of deployments = 35
Description: 14 Kastenlot, 16 Piston & 5 Calvert box
Single channel seismic reflectionQuantity: track kilometres = 1000
Description: airgun single channel
Gravity measurementsQuantity: track kilometres = 2000
Magnetic measurementsQuantity: track kilometres = 1000
Other geological/geophysical measurementsDescription: deep tow camera (WASP)