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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2025
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| Online Access: | https://doi.org/10.1594/PANGAEA.982937 |
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| _version_ | 1867172209403887616 |
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| author | Paul, Sophie Anna Luise |
| author_facet | Paul, Sophie Anna Luise |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The Neodymium (Nd) isotopic signature (εNd) has been widely used as a proxy to reconstruct past ocean circulation. Recently it has been increasingly questioned which archives can be reliably used to extract authigenic εNd used for the reconstruction of past ocean circulation and under which environmental conditions bottom seawater εNd are altered and the original water mass signature is overprinted. Pore waters of marine sediments are the key environment in which early diagenetic exchange processes between seawater-derived Nd and terrigenous solid phases take place. This dataset contains rare earth element and yttrium (REY) and manganese (Mn) concentrations of pore water and MUC overlying botom seawater from the abyssal Atlantic Ocean. Pore waters are oxic (no elevated Mn) and REY pore-water concentrations are low with 10-40 pM. Samples were collected during cruise MSM96 in 2020. Pore waters were sampled from MUC liners and for some samples several liners were pooled to acquire sufficient volume, especially for samples for which also Nd isotopes were measured. Sediments were centrifuged and the supernatant (i.e., the pore water) and the MUC bottom water were filtered through 0.2 µm pore size by different techniques (polyethersylfone (PES) syringe filters and nuclepore membrane filters using gas pressure). Pore water and seawater was preserved by acidification to ~ pH 1.8 with concentrated ultrapure HCl. REY and Mn for filtered samples were preconcentrated offline using a seaFAST (Elemental Scientific Inc., Nebraska, USA) with a 10 mL sample loop and using a NOBIAS PA-1 resin column. Samples were spiked with 100 ppt Tm and In to monitor yields and all REY were Tm corrected at the end of the data evaluation. Correction was usually within 5-15%. Preconcentrated samples were measured on a Thermo Fisher Element HR-ICP-MS (GEOMAR, Kiel) coupled to a CETAC Aridus 2 desolvating nebulizer for increased sensitivity and decreased oxide formation. Diffusive gradients in thin films (DGTs) were deployed for 12.5 and 28.4 hours at 5°C. Membranes were cut into 1-4 cm slices, eluted with 1 M HNO3 and measured by quadrupole ICP-MS (Perkin Elmer Nexion 350x). Sample concentrations were then calculated following methods described in Zhang and Davison (1995). The different methods lead to different results and based on a comparison of concentration data and shale-normalized REY patterns, syringe filtered samples were deemed most reliable. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_982937 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Dissolved rare earth element and yttrium and manganese concentrations in pore water from sediment cores from the Atlantic (MSM96) Paul, Sophie Anna Luise Cerium; Date/Time of event; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Dysprosium; Erbium; Europium; Event label; Filter; Gadolinium; GPF 20‐3_088; Holmium; KIEL0233GE0V201; KIEL0233GE1V201; KIEL0233GE2V201; KIEL0233GE3V201; KIEL0233GE4V201; KIEL0233GE5V201; KIEL0233GE6V201; KIEL0233GE7V201; KIEL0233GE9V201; KIEL0233GEBU201; KIEL0233GEBV201; KIEL0233GECU201; KIEL0233GEDV201; KIEL0233GEMU201; KIEL0233GEPU201; KIEL0233GEQU201; KIEL0233GERU201; KIEL0233GESU201; KIEL0233GETU201; KIEL0233GEUU201; KIEL0233GEVU201; KIEL0233GEXU201; KIEL0233GEYU201; KIEL0233GEZU201; Lanthanum; Latitude of event; Longitude of event; Lutetium; Manganese; Maria S. Merian; MSM96; MSM96_11-1; MSM96_20-1; MSM96_21-1; MSM96_22-1; MSM96_24-1; MSM96_25-1; MSM96_27-1; MSM96_28-1; MSM96_33-1; MSM96_36-1; MSM96_37-1; MSM96_39-1; MSM96_40-1; MSM96_42-1; MSM96_43-1; MSM96_47-1; MSM96_48-1; MSM96_50-1; MSM96_51-1; MSM96_55-1; MSM96_61-1; MSM96_66-1; MSM96_7-3; MSM96_8-1; MUC; MultiCorer; Multicorer with television; Neodymium; North Atlantic Ocean; Praseodymium; Samarium; Sample code/label; Station label; Terbium; Thulium; TVMUC; Ytterbium; Yttrium The Neodymium (Nd) isotopic signature (εNd) has been widely used as a proxy to reconstruct past ocean circulation. Recently it has been increasingly questioned which archives can be reliably used to extract authigenic εNd used for the reconstruction of past ocean circulation and under which environmental conditions bottom seawater εNd are altered and the original water mass signature is overprinted. Pore waters of marine sediments are the key environment in which early diagenetic exchange processes between seawater-derived Nd and terrigenous solid phases take place. This dataset contains rare earth element and yttrium (REY) and manganese (Mn) concentrations of pore water and MUC overlying botom seawater from the abyssal Atlantic Ocean. Pore waters are oxic (no elevated Mn) and REY pore-water concentrations are low with 10-40 pM. Samples were collected during cruise MSM96 in 2020. Pore waters were sampled from MUC liners and for some samples several liners were pooled to acquire sufficient volume, especially for samples for which also Nd isotopes were measured. Sediments were centrifuged and the supernatant (i.e., the pore water) and the MUC bottom water were filtered through 0.2 µm pore size by different techniques (polyethersylfone (PES) syringe filters and nuclepore membrane filters using gas pressure). Pore water and seawater was preserved by acidification to ~ pH 1.8 with concentrated ultrapure HCl. REY and Mn for filtered samples were preconcentrated offline using a seaFAST (Elemental Scientific Inc., Nebraska, USA) with a 10 mL sample loop and using a NOBIAS PA-1 resin column. Samples were spiked with 100 ppt Tm and In to monitor yields and all REY were Tm corrected at the end of the data evaluation. Correction was usually within 5-15%. Preconcentrated samples were measured on a Thermo Fisher Element HR-ICP-MS (GEOMAR, Kiel) coupled to a CETAC Aridus 2 desolvating nebulizer for increased sensitivity and decreased oxide formation. Diffusive gradients in thin films (DGTs) were deployed for 12.5 and 28.4 hours at 5°C. Membranes were cut into 1-4 cm slices, eluted with 1 M HNO3 and measured by quadrupole ICP-MS (Perkin Elmer Nexion 350x). Sample concentrations were then calculated following methods described in Zhang and Davison (1995). The different methods lead to different results and based on a comparison of concentration data and shale-normalized REY patterns, syringe filtered samples were deemed most reliable. |
| title | Dissolved rare earth element and yttrium and manganese concentrations in pore water from sediment cores from the Atlantic (MSM96) |
| topic | Cerium; Date/Time of event; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Dysprosium; Erbium; Europium; Event label; Filter; Gadolinium; GPF 20‐3_088; Holmium; KIEL0233GE0V201; KIEL0233GE1V201; KIEL0233GE2V201; KIEL0233GE3V201; KIEL0233GE4V201; KIEL0233GE5V201; KIEL0233GE6V201; KIEL0233GE7V201; KIEL0233GE9V201; KIEL0233GEBU201; KIEL0233GEBV201; KIEL0233GECU201; KIEL0233GEDV201; KIEL0233GEMU201; KIEL0233GEPU201; KIEL0233GEQU201; KIEL0233GERU201; KIEL0233GESU201; KIEL0233GETU201; KIEL0233GEUU201; KIEL0233GEVU201; KIEL0233GEXU201; KIEL0233GEYU201; KIEL0233GEZU201; Lanthanum; Latitude of event; Longitude of event; Lutetium; Manganese; Maria S. Merian; MSM96; MSM96_11-1; MSM96_20-1; MSM96_21-1; MSM96_22-1; MSM96_24-1; MSM96_25-1; MSM96_27-1; MSM96_28-1; MSM96_33-1; MSM96_36-1; MSM96_37-1; MSM96_39-1; MSM96_40-1; MSM96_42-1; MSM96_43-1; MSM96_47-1; MSM96_48-1; MSM96_50-1; MSM96_51-1; MSM96_55-1; MSM96_61-1; MSM96_66-1; MSM96_7-3; MSM96_8-1; MUC; MultiCorer; Multicorer with television; Neodymium; North Atlantic Ocean; Praseodymium; Samarium; Sample code/label; Station label; Terbium; Thulium; TVMUC; Ytterbium; Yttrium |
| url | https://doi.org/10.1594/PANGAEA.982937 |