Cruise inventory

RRS Charles Darwin CD21

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Charles Darwin (74AB)
Cruise identifierCD21
Cruise period1987-03-10 — 1987-04-07
StatusCompleted
Port of departureVictoria, Seychelles
Port of returnPort Louis, Mauritius
PurposeResearch
ObjectivesThe cruise programme consisted of two major elements. The first of these was a series of site surveys along the Mascarene Plateau for the closely following (May-July '87) drilling programme of the ODP Leg 115. The second element involved a multidisciplinary study of the structure, origins and evolution of the Rodrigues Ridge.
Chief scientistAlistair N Baxter (City of London Polytechnic Department of Geology)
Cruise reportRRS Charles Darwin CD21 cruise report cd21.pdf — access key 'C' (1.41 MB) 
Ocean/sea areas 
GeneralIndian Ocean
SpecificS. Indian Ocean
Track chartsRRS Charles Darwin CD21 cruise track — trk3335.html RRS Charles Darwin CD21 cruise track — trk3335a.html RRS Charles Darwin CD21 cruise track — trk3335b.html RRS Charles Darwin CD21 cruise track — trk3335c.html RRS Charles Darwin CD21 cruise track — trk3335d.html RRS Charles Darwin CD21 cruise track — trk3335e.html RRS Charles Darwin CD21 cruise track — trk3335f.html
Measurements 
Geology and geophysics 
DredgeQuantity: number of deployments = 17
Grab
Core - soft bottomQuantity: number of cores = 11
Description: physical & chemical analysis
Single-beam echosoundingQuantity: track kilometres = 1000
Single channel seismic reflectionQuantity: track kilometres = 1000
Gravity measurementsQuantity: track kilometres = 1852
Magnetic measurementsQuantity: track kilometres = 1852
Other geological/geophysical measurementsDescription: basalt geochemistry
Other geological/geophysical measurementsQuantity: track kilometres = 1666.8
Description: 3.5kHz
Other geological/geophysical measurementsDescription: paleomagnetism & rock magnetism, geochronology, paleontology