Cruise inventory

RRS Charles Darwin CD17

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Charles Darwin (74AB)
Cruise identifierCD17
Cruise period1986-10-15 — 1986-11-07
Port of departureMuscat, Oman
Port of returnMuscat, Oman
ObjectivesPrincipal objectives were to obtain sediment cores from a variety of environments representing (a) shallow water sediments situated above the oxygen minimum layer (b) organic rich sediments situated within the oxygen minimum layer, that is at depths between 200-1800 m and c) hemipelagic/oceanic sediments. For this box cores and piston cores were employed.

Collected material was to be used for:
(a) Facies variation of the sediment with respect to the oxygen minimum zone and to distance from likely sediment sources e.g. Indus River and deserts.
(b) Diagentic reactions of sediments showing variation in organic matter content and accumulated rate. Theses will be realised by study of both the solid and pore waters of the sediments.
c) History of sedimentation of piston cores represent about 200,000 years of accumulation. Here it is envisaged that changes in the accumulation of biogenic and terrigenous constituents will provide evidence for change of monsoonal conditions during glacial and interglacial periods.
(d) Changes in the input of man made radionuclides and the mixture of these into the sediments.
Chief scientistN Brian Price (University of Edinburgh Department of Geology)
Cruise reportRRS Charles Darwin CD17 cruise report cd17.pdf — access key 'C' (1.38 MB) 
Ocean/sea areas 
GeneralArabian Sea
SpecificN. West Indian Ocean
Track chartsRRS Charles Darwin CD17 cruise track — trk3331a.html RRS Charles Darwin CD17 cruise track — trk3331b.html
Physical oceanography 
Water bottle stationsQuantity: number of stations = 8
CTD stationsQuantity: number of stations = 8
Chemical oceanography 
OxygenQuantity: number of stations = 8
PhosphateQuantity: number of stations = 8
NitrateQuantity: number of stations = 8
SilicateQuantity: number of stations = 8
Trace elementsQuantity: number of stations = 8
Other chemical oceanographic measurementsQuantity: number of stations = 8
Description: particulate matter
Geology and geophysics 
Core - soft bottomQuantity: number of cores = 42
Description: box & piston corers; pore water analysis
Other geological/geophysical measurementsDescription: dust sampling (airborne dust)