BODC Cruise Metadata Report for RRS James Cook (740H) cruise JC130
Introduction
This report collates information from the BODC cruise inventory and oceanographic databases. It presents
- Cruise Inventory Information
- A summary of BODC data holdings for the cruise from the
- References - including cruise tracks and cruise reports
Cruise Inventory Information
| Long name | RRS James Cook (740H) cruise JC130 |
|---|---|
| Short name | JC130 |
| Objectives and Narrative |
International Ocean Discovery Program (IODP) Expedition 357 successfully cored an east?west transect across the southern wall of Atlantis Massif on the western flank of the Mid-Atlantic Ridge to study the links between serpentinization processes and microbial activity in the shallow subsurface of highly altered ultramafic and mafic sequences that have been uplifted to the seafloor along a major detachment fault zone.
The primary goals of this expedition were to (1) examine the role of serpentinization in driving hydrothermal systems, sustaining microbial communities, and sequestering carbon (2) characterize the tectonomagmatic processes that lead to lithospheric heterogeneities and detachment faulting (3) assess how abiotic and biotic processes change with variations in rock type and progressive exposure on the seafloor. To accomplish these objectives, we developed a coring and sampling strategy based around the use of seabed rock drills?the first time that such systems have been used in the scientific ocean drilling programs. This technology was chosen in hopes of achieving high recovery of the carbonate cap sequences and intact contact and deformation relationships. The expedition plans also included several engineering developments to assess geochemical parameters during drilling; sample bottom water before and after drilling; supply synthetic tracers during drilling for contamination assessment; gather downhole electrical resistivity and magnetic susceptibility logs for assessing fractures, fluid flow, and extent of serpentinization; and seal boreholes to provide opportunities for future experiments. |
| Ship | RRS James Cook |
| Departure Port | Southampton, United Kingdom |
| Departure Date | 2015-10-26 |
| Arrival Port | Southampton, United Kingdom |
| Arrival Date | 2015-12-11 |
| Principal Scientist(s) | Carol J Cotterill (British Geological Survey, Edinburgh) |
| Responsible Organisation | British Geological Survey, Edinburgh |
| Associated Project(s) | International Ocean Discovery Program (IODP) |
| IHB Sea Areas Visited | North East Atlantic Ocean (limit 40W) |
| Marsden Squares Visited | 113 |
| Work Area Description | Mid-Atlantic Ridge |
| Unable to lookup cruise bounds at this time | |
| Work Area Bounding Polygon | |
| Southern Limit | unknown |
| Northern Limit | unknown |
| Western Limit | unknown |
| Eastern Limit | unknown |
Cruise Inventory Datasets
| Physical oceanography | |
|---|---|
| CTD stations |
Quantity:
number of profiles =
12
Description: CTD stations. 60 litres collected at each. |
| Water bottle stations |
Quantity:
number of samples =
42
Description: 4L Niskin bottles attached to the drill, fired during and immediately after coring (3 at each site they were used). |
| Water bottle stations |
Quantity:
number of samples =
8
Description: 10-litre surface water samples from CTD |
| Water bottle stations |
Quantity:
number of samples =
42
Description: 10-litre bottom water samples from CTD. |
| Water bottle stations |
Quantity:
number of samples =
20
Description: 10-litre mid-column water samples from CTD. |
| Geology and geophysics | |
| Core - rock |
Quantity:
number of cores =
6
Description: Seabed rockdrill: MeBo system, Core material acquired alongside in-situ water sampling at borehole of temp; pressure; conductivity; dissolved oxygen; pH/ORP and methane using drill-mounted water sensor package. |
| Core - rock |
Quantity:
number of cores =
11
Description: Seabed rockdrill: BGS RD2 system, Core material acquired alongside in-situ water sampling at borehole of temp; pressure; conductivity; dissolved oxygen; pH/ORP and methane using drill-mounted water sensor package. |
| In-situ seafloor measurement/sampling |
Quantity:
number of cores =
11
Description: Seabed rockdrill: BGS RD2 system, Core material acquired alongside in-situ water sampling at borehole of temp; pressure; conductivity; dissolved oxygen; pH/ORP and methane using drill-mounted water sensor package. |
| In-situ seafloor measurement/sampling |
Quantity:
number of cores =
6
Description: Seabed rockdrill: MeBo system, Core material acquired alongside in-situ water sampling at borehole of temp; pressure; conductivity; dissolved oxygen; pH/ORP and methane using drill-mounted water sensor package. |
| Multi-beam echosounding |
Quantity:
number of track lines =
14
Description: Multibeam acquired across Atlantis Massif, Atlantis Fracture Zone and using EM120. Beam angles were focussed to 45 degrees with a survey speed of 5 ? 6 knots and 50 ? 100% overlap in order to acquire 50m resolution. |
Cruise Inventory Mooring/Buoy Operations
| Latitude | Longitude | Data type | Description |
|---|---|---|---|
| 30° 7' N | 42° 9' W | Other geological/geophysical measurements | Installation of borehole packer. However, packer believed to have lifted out of the hole after catching on the drillrig as it was recovered to deck. |
| 30° 7' N | 42° 7' W | Other geological/geophysical measurements | Installation of borehole packer. Plan to re-sample borehole fluids in 2018/19 by NSF funded cruise |
| 30° 7' N | 42° 4' W | Other geological/geophysical measurements | Installation of borehole packer. Plan to re-sample borehole fluids in 2018/19 by NSF funded cruise |
| 30° 9' N | 42° 7' W | Other geological/geophysical measurements | Installation of borehole packer. Plan to re-sample borehole fluids in 2018/19 by NSF funded cruise |
Summary of BODC Data Holdings for the Cruise
National Oceanographic Database
No data currently held for this cruise in the BODC National Oceanographic Database
Project Database
No data currently held for this cruise in the BODC Project Database
