RRS Charles Darwin CD7
Cruise summary report
|Ship name (ship code)||RRS Charles Darwin (74AB)|
|Cruise period||1985-08-31 — 1985-10-05|
|Port of departure||Funchal, Portugal|
|Port of return||Mindelo, Cape Verde|
|Objectives||To investigate the Mesozoic and early Cenozoic plate motions in the eastern Equatorial Atlantic and examine their relation to crustal structure and the history of sediment deposition. The study involved:
1. recording seismic reflection profiles to examine the sedimentary cover of the African margin.
2. delineating the magnetic and bathymetric trends of the region.
3. determining the patterns of sediment accumulation at the various stages of Atlantic opening.
4. using seismic refraction to study the structure of the Guinee Fracture Zone.
|Chief scientist||E John W Jones (University College London, Department of Geology)|
|Cruise report||(0.38 MB)|
|General||North East Atlantic Ocean (limit 40W)|
|Specific||E. Central Atlantic Ocean|
|Track charts||(0.02 MB)|
|Geology and geophysics|
|In-situ seafloor measurement/sampling||Description: The studying of the structure of the Ginee Fracture Zone using seismic refraction. No. of measurements not noted. Bottom samples were also taken.|
|In-situ seafloor measurement/sampling||Description: Determination of sediment accumulation patterns at various stages of the Atlantic opening. No. of experiments not noted.|
|Single channel seismic reflection||Description: Seismic reflection profiles were created to examine the sedimentary cover of the African margine. No. of profiles not noted.|
|Single channel seismic reflection||Description: The studying of the structure of the Ginee Fracture Zone using seismic refraction. No. of measurements not noted. Bottom samples were also taken.|
|Magnetic measurements||Description: Delineating bathymetric and magnetic trends of the region. No. of experiments not noted.|