de.pangaea.dataset993389 und dataset PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact 2026-07-22T07:47:40Z https://doi.pangaea.de/10.1594/PANGAEA.993389 2026-06-08T09:34:38 publication https://doi.org/10.1594/PANGAEA.993389 Corbett, Thomas

corbett.tdw@gmail.com

https://orcid.org/0000-0001-6943-0373 information author Chow, Kelly

kellychow2003@gmail.com

author Isson, Terry

terry.isson@waikato.ac.nz

author Schipper, Louis A https://orcid.org/0000-0001-9899-1276 information author PANGAEA

info@pangaea.de

https://www.pangaea.de/ information publisher tableDigital This dataset reports measurements from soil incubations examining the effects of temperature (5–50 °C, 18 increments) and labile organic carbon (glucose) on dunite weathering, dissolved inorganic carbon (DIC) production, and CO₂ fluxes. Treatments included soil alone, soil + dunite, soil + glucose, and soil + dunite + glucose, which were incubated for three days. Raw data include dissolved inorganic and organic carbon (DIC and DOC) concentrations, headspace CO₂, pH, total alkalinity, and dissolved cations (Ca²⁺, Mg²⁺, Na⁺ and K⁺). Calculated weathering rates and the 'seacarb' calculated bicarbonate and carbonate sum (DIC species minus dissolved CO₂) are also reported (Gattuso et al., 2024). The incubations were performed on a heat block with 18 wells, one end was cooled and the other heated providing a temperature gradient. Temperature loggers (DS1921G Thermochron iButton, Analog Devices, Inc., USA) were placed in wells 1, 4, 7, 9, 11, 13, 15, and 18, and the temperatures of the remaining wells were calculated via linear regression. Each treatment was run separately on the temperature block. The treatment vessels were sealed periodically (time = 0–6 h, 24–30 h and 48–54 h) and samples were collected for analysis (described below). The water from all the vials for each treatment was collected then centrifuged at 3300 rpm for 10 minutes (Kubota 8420, Japan). Subsamples were taken for alkalinity (via titration to pH 4.2 with 0.01 mol/l HCl) and pH measurements (10 ml) (SI Analytics Titroline 7000); and dissolved inorganic (DIC) and organic carbon (DOC) measurements (10 ml) (OI Analytical Aurora 1030 TOC analyser, Xylem, USA). A 5–10 mL subsample was also taken, filtered to 0.45 µm and acidified to 2 % v/v with HNO₃, for Mg, Ca, K, and Na analysis via ICP-MS (Agilent 8900 ICP−MS, Agilent Technologies, California, USA). Alkalinity titrations provided the moles of H⁺ for the samples (gravimetrically determined volume) to reach pH 4.2. The moles of H⁺ were converted to meq and divided by the sample volume. DIC and DOC analyses were performed alongside a gravimetrically produced calibration set of Potassium Hydrogen Phthalate, via wet oxidation which provided CO₂ peak area. Peak area was plotted against the known molar concentrations of the calibration set, and a linear regression was used to solve for the unknown sample molar concentrations. Dissolved cations (Ca²⁺, Mg²⁺, Na⁺ and K⁺) measured via ICP−MS were converted from µg/l to mmol using the atomic mass and solution volume of the treatment, for weathering rate calculations. Headspace CO₂ samples were measured alongside known volumes of high purity (>99%) CO₂, which were used for calibration standards, as peak area in mV. The moles of CO₂ in the standards were calculated using the known volume, pressure and the ideal gas law, the peak area of the samples used to solve for moles against the linear calibration. The measured sample (moles) were converted to mmol/l by dividing by the volume injected into the analyser, which was subsequently multiplied by the headspace volume of the treatment vessels to get the moles of CO₂ reported here. Seacarb (flag 8, salinity = 0) was used to calculate the total alkalinity based bicarbonate and carbonate for soil + dunite and soil + dunite + glucose, after subtracting the total alkalinity of soil and soil + glucose respectively. Seacarb (flag 9, salinity = 0) was also used to calculate the DIC based bicarbonate and carbonate for soil + dunite and soil + dunite + glucose, after subtracting the DIC of soil and soil + glucose respectively. Weathering rates were calculated using the net total cation sums (i.e. ∑[Mg²⁺], [Ca²⁺], [K⁺], [Na⁺]). The total cation sums for soil alone and soil + glucose were subtracted from the total cation sums of soil + dunite and soil + dunite + glucose respectively, to provide net total cation sum. The net cation molar sum was divided by the specific surface area (m² g⁻¹), dunite mass (g) and t = time (s), to provide weathering rates which were subsequently log transformed. completed Corbett, Thomas

corbett.tdw@gmail.com

https://orcid.org/0000-0001-6943-0373 information principalInvestigator copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation 175.568602 175.568602 -37.561184 -37.561184 2024-09-13T22:41:00 2024-09-13T22:41:00 File contains all raw (aq) and (g) phase data. Each line corresponds to and experimental treatment. Calculated values (e.g. weathering rates) are also provided. Soil sampling data includes decimal coordinates, elevation, sample depth and sample time. Event label thematicClassification DEPTH, soil physicalMeasurement Soil corer; Origin of soil field sample m m Type of study thematicClassification Experimental treatment thematicClassification Incubation of surface soil/sediment, ex-situ Treatment thematicClassification Soil alone or in combination with added dunite and glucose Treatment: temperature physicalMeasurement Temperature controlled by heat block; monitored by temperature loggers, Analog Devices, DS1921G Thermochron iButton °C °C Incubation duration physicalMeasurement days days pH thematicClassification pH meter; mounted in an automatic titrator, SI Analytics, TitroLine™ 7000 Alkalinity, total physicalMeasurement Automatic titrator, SI Analytics, TitroLine™ 7000; titration to pH = 4.2, using 0.01 mol/l HCl mEq/l mEq/l Carbon, inorganic, dissolved physicalMeasurement Total Organic Carbon Analyzer, Xylem, OI Analytical Aurora 1030C TOC Analyzer mmol/l mmol/l Carbon, organic, dissolved physicalMeasurement Total Organic Carbon Analyzer, Xylem, OI Analytical Aurora 1030C TOC Analyzer mmol/l mmol/l Sodium physicalMeasurement ICP-MS, Agilent Technologies, Agilent 8900; Measured concentrations in µg/l were converted to mmol using the atomic mass and solution volume of the treatment, for weathering rate calculations mmol mmol Magnesium' physicalMeasurement ICP-MS, Agilent Technologies, Agilent 8900; Measured concentrations in µg/l were converted to mmol using the atomic mass and solution volume of the treatment, for weathering rate calculations mmol mmol Potassium physicalMeasurement ICP-MS, Agilent Technologies, Agilent 8900; Measured concentrations in µg/l were converted to mmol using the atomic mass and solution volume of the treatment, for weathering rate calculations mmol mmol Calcium physicalMeasurement ICP-MS, Agilent Technologies, Agilent 8900; Measured concentrations in µg/l were converted to mmol using the atomic mass and solution volume of the treatment, for weathering rate calculations mmol mmol Carbon dioxide physicalMeasurement Calculated average/mean values; Average CO₂ concentration in the headspace over 3 days of incubation; average calculated using the daily rates of CO₂ production [mmol/g/h] mol mol Carbon dioxide physicalMeasurement ICP-MS, Agilent Technologies, Agilent 8900; measured in the headspace after 1 day of incubation; Day 1: CO₂ in the headspace; vials were sealed for the first 6 hours (time 0–6) to measure CO₂. mol mol Carbon dioxide physicalMeasurement ICP-MS, Agilent Technologies, Agilent 8900; measured in the headspace after 2 days of incubation; Day 2: CO₂ in the headspace; vials were sealed for the first 6 hours (time 24–30) to measure CO₂. mol mol Carbon dioxide physicalMeasurement ICP-MS, Agilent Technologies, Agilent 8900; measured in the headspace after 3 days of incubation; Day 3: CO₂ in the headspace; vials were sealed for the first 6 hours (time 48–54) to measure CO₂. mol mol Weathering rate, dunite physicalMeasurement Calculated according to Amann et al. (2022); Weathering rate, dunite [log mol/m**2/s] log10 mol/m**2/s log10 mol/m**2/s Alkalinity, total physicalMeasurement Calculated with seacarb package in R version 3.3.3 (Gattuso et al, 2024); Total alkalinity; seacarb calculated bicarbonate and carbonate sum ([[HCO₃⁻] + [CO₃²⁻]) mmol(Eq)/l mmol(Eq)/l Carbon, inorganic, dissolved physicalMeasurement Calculated with seacarb package in R version 3.3.3 (Gattuso et al, 2024); Dissolved inorganic carbon; seacarb calculated bicarbonate and carbonate sum ([HCO₃⁻] + [CO₃²⁻]) mmol/l mmol/l text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.993389?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: Soil_field_sample * LATITUDE: -37.561184 * LONGITUDE: 175.568602 * DATE/TIME: 2024-09-13T22:41:00 * ELEVATION: 11.0 m * LOCATION: Springdale, North Island, New Zealand * METHOD/DEVICE: Soil corer Depth, soil: 0.1 m 2024-09-13T22:41:00 Supplement to Corbett, Thomas

corbett.tdw@gmail.com

https://orcid.org/0000-0001-6943-0373 information author Chow, Kelly

kellychow2003@gmail.com

author Isson, Terry

terry.isson@waikato.ac.nz

author Schipper, Louis A https://orcid.org/0000-0001-9899-1276 information author documentHardcopy Geochemistry References 2022-01-01 publication https://doi.org/10.3389/fclim.2022.929268 Amann, Thorben

science@thorbenamann.de

https://orcid.org/0000-0001-9347-0615 information author Hartmann, Jens

geo@hattes.de

https://orcid.org/0000-0003-1878-9321 information author Hellmann, Roland author Pedrosa, Elisabete Trindade author Malik, Aman https://orcid.org/0000-0002-7310-8448 information author documentDigital Frontiers in Climate 4 929268 Related code / software 2024-01-01 publication https://cran.r-project.org/web/packages/seacarb/index.html Gattuso, Jean-Pierre

jean-pierre.gattuso@imev-mer.fr

https://orcid.org/0000-0002-4533-4114 information author Epitalon, Jean-Marie author Lavigne, Héloïse

hlavigne@naturalsciences.be

https://orcid.org/0009-0006-6766-0638 information author Orr, James

James.Orr@lsce.ipsl.fr

author Gentili, Bernard

bernard.gentili@orange.fr

http://omtab.obs-vlfr.fr/personnes/z_gent_be/gentili.php information author Hagens, Mathilde https://orcid.org/0000-0003-3980-1043 information author Hofmann, Andreas author Mueller, Jens-Daniel author Proye, Aurélien author Rae, James https://orcid.org/0000-0003-3904-2526 information author Soetaert, Karline

karline.soetaert@nioz.nl

https://orcid.org/0000-0003-4603-7100 information author documentDigital