RRS John Murray JM1/69
Cruise summary report
|Ship name (ship code)||RRS John Murray (74MJ)|
|Cruise period||1969-01-05 — 1969-02-12|
|Port of departure||Plymouth, United Kingdom|
|Port of return||Barry, United Kingdom|
|Objectives||Geochemistry on the Moroccan Shelf.
To investigate the areas of interest revealed during the 1968 reconnaisance cruise. Of particular interest were the areas of phosphatic rock on two of the 1968 traverses. In addition, it was planned to study further the use of bottom radioactivity measurements in locating phosphate deposits.
Cruise 1-1969 proved a highly successful operation.
During the 21 days spent on the Moroccan shelf all but the four days in Agadir and Casablanca were fully utilised. In addtion, two days were spent on a prelimianary reconnaisance survey on the Portuguese shelf and a magnetometer traverse was run from Plymouth to the main work area. A total of more than 340 stations were completed (exclusing sub-stations).
|Chief scientist||Colin P Summerhayes (Imperial College London Department of Geology)|
|Cruise report||(0.94 MB)|
|General||North East Atlantic Ocean (limit 40W)|
|Track charts||(0.10 MB)|
|Geology and geophysics|
|Core - rock||Description: corer|
|In-situ seafloor measurement/sampling||Description: magnetometer|
|Seismic refraction||Description: sparker|