RRS Charles Darwin CD63
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Charles Darwin (74AB) |
| Cruise identifier | CD63 |
| Cruise period | 1991-10-02 — 1991-10-25 |
| Status | Completed |
| Port of departure | Barry, United Kingdom |
| Port of return | Newport, United Kingdom |
| Purpose | Research |
| Objectives | 1. To map more closely the area covered by a metal-rich layer previously identified at two locations within the study area. To search for traces of relict layers within the sediment column.
2. To determine the time history of preservation of carbonate in the sediments at various depths and sites both on and surrounding the Porcupine Abyssal Plain. 3. To determine the sedimentation history (including turbidites) of the Porcupine Abyssal Plain over the last few hundred thousand years using piston cores. |
| Chief scientist | Sarah Colley (Institute of Oceanographic Sciences Deacon Laboratory) |
| Project | MAST 0022 |
| Cruise report |  (0.66 MB) |
| Ocean/sea areas | |
| General | North East Atlantic Ocean (limit 40W) |
| Specific | Atlantic Ocean, Porcupine Abyssal Plain, Freen Deep, Armorican Seamount |
| Track charts | (0.03 MB) |
| Measurements | |
| Chemical oceanography | |
| Oxygen | Quantity: number of cores = 10 Description: Kasten cores for pore water samples - solid phase geochemistry |
| Oxygen | Quantity: number of cores = 6 Description: Box cores - dissolved oxygen |
| Carbon dioxide | Quantity: number of deployments = 7 Description: in situ pore water sampler |
| Phosphate | Quantity: number of deployments = 7 Description: in situ pore water sampler |
| Phosphate | Quantity: number of cores = 10 Description: Kasten cores for pore water samples - solid phase geochemistry |
| Nitrate | Quantity: number of cores = 10 Description: Kasten cores for pore water samples - solid phase geochemistry |
| Nitrate | Quantity: number of deployments = 7 Description: in situ pore water sampler |
| Nitrite | Quantity: number of deployments = 7 Description: in situ pore water sampler |
| Nitrite | Quantity: number of cores = 10 Description: Kasten cores for pore water samples - solid phase geochemistry |
| Ammonia | Quantity: number of deployments = 7 Description: in situ pore water sampler |
| Ammonia | Quantity: number of cores = 10 Description: Kasten cores for pore water samples - solid phase geochemistry |
| Silicate | Quantity: number of cores = 6 Description: Box cores for pore water samples - solid phase geochemistry |
| Silicate | Quantity: number of deployments = 7 Description: in situ pore water sampler |
| Alkalinity | Quantity: number of deployments = 7 Description: in situ pore water sampler |
| pH | Quantity: number of deployments = 7 Description: in situ pore water sampler |
| pH | Quantity: number of deployments = 7 Description: in situ pH probe |
| Trace elements | Quantity: number of deployments = 7 Description: in situ pore water sampler |
| Trace elements | Quantity: number of cores = 6 Description: Box cores for pore water samples - solid phase geochemistry |
| Radioactivity | Quantity: number of cores = 6 Description: Box cores for pore water samples - solid phase geochemistry |
| Other chemical oceanographic measurements | Quantity: number of cores = 6 Description: Box cores for pore water samples - solid phase geochemistry |
| Other chemical oceanographic measurements | Quantity: number of deployments = 7 Description: in situ pore water sampler |
| Geology and geophysics | |
| Core - soft bottom | Quantity: number of cores = 10 Description: Kasten cores for pore water samples - solid phase geochemistry |
| Core - soft bottom | Quantity: number of cores = 15 Description: cores - piston/gravity cores for solid phase geochemistry |
