Pore-water chemistry of ODP Leg 114 holes
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 R...
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1991
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.755281 https://doi.org/10.1594/PANGAEA.755281 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.755281 2024-09-30T14:43:35+00:00 Pore-water chemistry of ODP Leg 114 holes Froelich, Philip N Mortlock, Richard A Mefferd, M Powers, J 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 1991 text/tab-separated-values, 1058 data points https://doi.pangaea.de/10.1594/PANGAEA.755281 https://doi.org/10.1594/PANGAEA.755281 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.755281 https://doi.org/10.1594/PANGAEA.755281 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Froelich, Philip N; Mortlock, Richard A; Mefferd, M; Powers, J (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 114-699A 114-700B 114-701A 114-701B 114-701C 114-702A 114-702B 114-704A 114-704B Alkalinity total Barium Calcium Chloride DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Fluoride Joides Resolution Leg114 Lithium Magnesium Ocean Drilling Program ODP pH Potassium Salinity Sample code/label Silicon South Atlantic Ocean Strontium Sulfate dataset 1991 ftpangaea https://doi.org/10.1594/PANGAEA.75528110.2973/odp.proc.sr.114.153.1991 2024-09-11T00:15:18Z 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). Dataset South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science Georgia Basin ENVELOPE(-35.500,-35.500,-50.750,-50.750) Islas Orcadas Rise ENVELOPE(-26.000,-26.000,-51.500,-51.500) Mid-Atlantic Ridge Orcadas ENVELOPE(-44.717,-44.717,-60.750,-60.750) Orcadas Rise ENVELOPE(-26.000,-26.000,-51.500,-51.500) ENVELOPE(-30.677000,7.420800,-46.879000,-52.985000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
114-699A 114-700B 114-701A 114-701B 114-701C 114-702A 114-702B 114-704A 114-704B Alkalinity total Barium Calcium Chloride DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Fluoride Joides Resolution Leg114 Lithium Magnesium Ocean Drilling Program ODP pH Potassium Salinity Sample code/label Silicon South Atlantic Ocean Strontium Sulfate |
spellingShingle |
114-699A 114-700B 114-701A 114-701B 114-701C 114-702A 114-702B 114-704A 114-704B Alkalinity total Barium Calcium Chloride DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Fluoride Joides Resolution Leg114 Lithium Magnesium Ocean Drilling Program ODP pH Potassium Salinity Sample code/label Silicon South Atlantic Ocean Strontium Sulfate Froelich, Philip N Mortlock, Richard A Mefferd, M Powers, J Pore-water chemistry of ODP Leg 114 holes |
topic_facet |
114-699A 114-700B 114-701A 114-701B 114-701C 114-702A 114-702B 114-704A 114-704B Alkalinity total Barium Calcium Chloride DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Fluoride Joides Resolution Leg114 Lithium Magnesium Ocean Drilling Program ODP pH Potassium Salinity Sample code/label Silicon South Atlantic Ocean Strontium Sulfate |
description |
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). |
format |
Dataset |
author |
Froelich, Philip N Mortlock, Richard A Mefferd, M Powers, J |
author_facet |
Froelich, Philip N Mortlock, Richard A Mefferd, M Powers, J |
author_sort |
Froelich, Philip N |
title |
Pore-water chemistry of ODP Leg 114 holes |
title_short |
Pore-water chemistry of ODP Leg 114 holes |
title_full |
Pore-water chemistry of ODP Leg 114 holes |
title_fullStr |
Pore-water chemistry of ODP Leg 114 holes |
title_full_unstemmed |
Pore-water chemistry of ODP Leg 114 holes |
title_sort |
pore-water chemistry of odp leg 114 holes |
publisher |
PANGAEA |
publishDate |
1991 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.755281 https://doi.org/10.1594/PANGAEA.755281 |
op_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 |
long_lat |
ENVELOPE(-35.500,-35.500,-50.750,-50.750) ENVELOPE(-26.000,-26.000,-51.500,-51.500) ENVELOPE(-44.717,-44.717,-60.750,-60.750) ENVELOPE(-26.000,-26.000,-51.500,-51.500) ENVELOPE(-30.677000,7.420800,-46.879000,-52.985000) |
geographic |
Georgia Basin Islas Orcadas Rise Mid-Atlantic Ridge Orcadas Orcadas Rise |
geographic_facet |
Georgia Basin Islas Orcadas Rise Mid-Atlantic Ridge Orcadas Orcadas Rise |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Supplement to: Froelich, Philip N; Mortlock, Richard A; Mefferd, M; Powers, J (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 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.755281 https://doi.org/10.1594/PANGAEA.755281 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.75528110.2973/odp.proc.sr.114.153.1991 |
_version_ |
1811645338903117824 |