X-ray Fluorescence (XRF) core scanning from sediment core of Lake Alchichica in Mexico
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| Auteurs principaux: | , , , , , , , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2026
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| _version_ | 1867168237241761792 |
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| author | Safaierad, Reza Israde-Alcántara, Isabel Rantala, Marttiina V Domínguez-Vázquez, Gabriela Schefuß, Enno Tylmann, Wojciech Francus, Pierre Mattielli, Nadine Metcalfe, Sarah Fagel, Nathalie |
| author_facet | Safaierad, Reza Israde-Alcántara, Isabel Rantala, Marttiina V Domínguez-Vázquez, Gabriela Schefuß, Enno Tylmann, Wojciech Francus, Pierre Mattielli, Nadine Metcalfe, Sarah Fagel, Nathalie |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The geochemical data were measured from a 57-cm-long sediment core retrieved from Lake Alchichica (19° 24' 38 N, 97° 24' 14 W, 2322 masl) at a water depth of ~ 60 m using a Uwitec® coring device equipped with a 9-cm coring tube. Geochemical compositions of the sediment core were analyzed using an ITRAX X-ray fluorescence core scanner (CS-XRF) at the INRS Centre Eau Terre Environnement in Canada. The analysis produced the ratio of Compton (incoherent) to Rayleigh (coherent) scattering (Inc/Coh), which can serve as an indicator of sediment organic content. The scans were measured at 2 mm intervals using 20 kV with a current of 10 mA and a dwell time of 20 seconds. To reduce matrix effects and address the closed-sum issue, elemental intensities (measured in counts per second) were transformed using the centered log-ratio (clr) method. For better visualization, all elemental data were subjected to min-max normalization. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_982945 |
| institution | PANGAEA |
| language | en |
| publishDate | 2026 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | X-ray Fluorescence (XRF) core scanning from sediment core of Lake Alchichica in Mexico Safaierad, Reza Israde-Alcántara, Isabel Rantala, Marttiina V Domínguez-Vázquez, Gabriela Schefuß, Enno Tylmann, Wojciech Francus, Pierre Mattielli, Nadine Metcalfe, Sarah Fagel, Nathalie (Rhodium-Indium)/coherence ratio; AGE; Age, Bayesian based model Plum on Pb-210 and C-14 data; Calcium (centered log ratio); carbon isotope; Chlorine (centered log ratio); Copper (centered log ratio); DEPTH, sediment/rock; Deuterium Isotopes; Iron (centered log ratio); Lake_Alchichica; leaf waxes; Manganese (centered log ratio); Mexico; Nickel (centered log ratio); oxygen isotope; Pollen; Potassium (centered log ratio); Powder X-ray diffractometer (XRD), Bruker, D8 ADVANCE ECO; Sediment core; Sediment corer, UWITEC; Silicon (centered log ratio); Strontium (centered log ratio); Titanium (centered log ratio); XRD; XRF core scanner data; Zirconium (centered log ratio) The geochemical data were measured from a 57-cm-long sediment core retrieved from Lake Alchichica (19° 24' 38 N, 97° 24' 14 W, 2322 masl) at a water depth of ~ 60 m using a Uwitec® coring device equipped with a 9-cm coring tube. Geochemical compositions of the sediment core were analyzed using an ITRAX X-ray fluorescence core scanner (CS-XRF) at the INRS Centre Eau Terre Environnement in Canada. The analysis produced the ratio of Compton (incoherent) to Rayleigh (coherent) scattering (Inc/Coh), which can serve as an indicator of sediment organic content. The scans were measured at 2 mm intervals using 20 kV with a current of 10 mA and a dwell time of 20 seconds. To reduce matrix effects and address the closed-sum issue, elemental intensities (measured in counts per second) were transformed using the centered log-ratio (clr) method. For better visualization, all elemental data were subjected to min-max normalization. |
| title | X-ray Fluorescence (XRF) core scanning from sediment core of Lake Alchichica in Mexico |
| topic | (Rhodium-Indium)/coherence ratio; AGE; Age, Bayesian based model Plum on Pb-210 and C-14 data; Calcium (centered log ratio); carbon isotope; Chlorine (centered log ratio); Copper (centered log ratio); DEPTH, sediment/rock; Deuterium Isotopes; Iron (centered log ratio); Lake_Alchichica; leaf waxes; Manganese (centered log ratio); Mexico; Nickel (centered log ratio); oxygen isotope; Pollen; Potassium (centered log ratio); Powder X-ray diffractometer (XRD), Bruker, D8 ADVANCE ECO; Sediment core; Sediment corer, UWITEC; Silicon (centered log ratio); Strontium (centered log ratio); Titanium (centered log ratio); XRD; XRF core scanner data; Zirconium (centered log ratio) |
| url | https://doi.org/10.1594/PANGAEA.982945 |