Froelich, Philip N; Mortlock, Richard A; Mefferd, M; Powers, J (1991): Pore-water chemistry of ODP Leg 114 holes [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.755281, Supplement to: Froelich, PN et al. (1991): Interstitial-water chemistry: abyssal South Atlantic and East Georgia basins, Islas Orcadas and Meteor Rises. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 719-731, https://doi.org/10.2973/odp.proc.sr.114.153.1991
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Abstract:
Pore-water samples were recovered at five sites from ODP Leg 114 in the subantarctic South Atlantic Ocean and analyzed for pH, alkalinity, chloride, sulfate, fluoride, silica, magnesium, calcium, strontium, potassium, lithium, and barium. At sites in the East Georgia Basin and on the Islas Orcadas Rise, Ca increases and Mg decreases linearly downhole with a DeltaMg/DeltaCa ratio reflecting conservative diffusive exchange and basalt basement reactions. At sites on the west flank of the Mid-Atlantic Ridge and on the Meteor Rise, Ca gradients are nonlinear, and nonconservative DeltaMg/DeltaCa ratios reflect alteration reactions of abundant silicic volcanic ash in the sediment. K decreases linearly downhole at all sites, reflecting uptake by basement and the absence of significant sediment-hosted reactions. SO4 decreases and alkalinity increases downhole are due to a slight sulfate reduction at all sites except at Site 701. Sr increases downhole at all sites except Site 701, with DeltaSr/DeltaCa ratios reflecting diffusive exchange with basement. At Site 704 on the Meteor Rise, there is intense Sr production during carbonate recrystallization in the upper 200 mbsf. Below 200 mbsf at Site 704, the ion concentration product of SrSO4 is constant, suggesting Sr control by celestite solubility. Li and F concentrations display complex behavior related to sedimentary reactions, probably calcite recrystallization (Li uptake and F release).
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -50.631222 * Median Longitude: -18.720833 * South-bound Latitude: -52.985000 * West-bound Longitude: -30.677000 * North-bound Latitude: -46.879000 * East-bound Longitude: 7.420800
Date/Time Start: 1987-03-20T10:45:00 * Date/Time End: 1987-05-03T10:14:00
Minimum DEPTH, sediment/rock: 2.9 m * Maximum DEPTH, sediment/rock: 665.1 m
Event(s):
114-699A * Latitude: -51.542000 * Longitude: -30.677000 * Date/Time Start: 1987-03-20T10:45:00 * Date/Time End: 1987-03-26T15:29:00 * Elevation: -3716.0 m * Penetration: 518.1 m * Recovery: 356.52 m * Location: South Atlantic Ocean * Campaign: Leg114 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 56 cores; 518.1 m cored; 0 m drilled; 68.8 % recovery
114-700B * Latitude: -51.533000 * Longitude: -30.278100 * Date/Time Start: 1987-03-27T22:45:00 * Date/Time End: 1987-04-03T12:45:00 * Elevation: -3612.0 m * Penetration: 489 m * Recovery: 245.19 m * Location: South Atlantic Ocean * Campaign: Leg114 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 53 cores; 472.1 m cored; 0 m drilled; 51.9 % recovery
114-701A * Latitude: -51.985000 * Longitude: -23.212300 * Date/Time Start: 1987-04-04T14:35:00 * Date/Time End: 1987-04-06T06:29:00 * Elevation: -4647.0 m * Penetration: 74.8 m * Recovery: 69.66 m * Location: South Atlantic Ocean * Campaign: Leg114 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 8 cores; 74.8 m cored; 0 m drilled; 93.1 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Froelich, Philip N | DSDP/ODP/IODP sample designation | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 4 | pH | pH | Froelich, Philip N | |||
| 5 | Alkalinity, total | AT | mmol(eq)/l | Froelich, Philip N | ||
| 6 | Salinity | Sal | Froelich, Philip N | |||
| 7 | Magnesium | Mg | mmol/l | Froelich, Philip N | ||
| 8 | Calcium | Ca | mmol/l | Froelich, Philip N | ||
| 9 | Chloride | Cl- | mmol/l | Froelich, Philip N | ||
| 10 | Sulfate | [SO4]2- | mmol/l | Froelich, Philip N | ||
| 11 | Fluoride | F- | µmol/l | Froelich, Philip N | ||
| 12 | Silicon | Si | µmol/l | Froelich, Philip N | ||
| 13 | Strontium | Sr | µmol/l | Froelich, Philip N | ||
| 14 | Potassium | K | mmol/l | Froelich, Philip N | ||
| 15 | Lithium | Li | µmol/l | Froelich, Philip N | ||
| 16 | Barium | Ba | µmol/l | Froelich, Philip N |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1058 data points