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| Autores principales: | , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2023
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| Materias: | |
| Acceso en línea: | https://doi.org/10.1594/PANGAEA.956302 |
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| _version_ | 1867170416364093440 |
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| author | Safaierad, Reza Zolitschka, Bernd |
| author_facet | Safaierad, Reza Zolitschka, Bernd |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | For grain size, prior to grain size analyses, OM was removed by H2O2 (30 %) and carbonates were destroyed with HCl (10 %) from samples. For dispersion, 20 ml of Calgon [(NaPO3)n] was added and agitated overnight. On the next day, analyses were performed with a laser diffraction particle-size analyzer (Beckman Coulter LS 200) after ultrasonic treatment for 30 s. Each sample was measured at least four times for 60 s until a stable distribution was reached. Thereafter, the arithmetic mean was calculated for the best three sample runs. Grain size distributions and all statistical grain size parameters were calculated from the output of the LS 200 as geometric graphical measures according to Folk and Ward (1957) with the MS Excel-based macro Gradistat, Version 8.0 (Blott and Pye, 2001). Analyses were carried out in the GEOPOLAR lab at the University of Bremen. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_956302 |
| institution | PANGAEA |
| language | en |
| publishDate | 2023 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Grain size in Hashilan Wetland sediment core, western Iran Safaierad, Reza Zolitschka, Bernd AGE; Atmospheric dust; Beckman Coulter Laser diffraction particle size analyzer LS 200; DEPTH, sediment/rock; Grain Size; Grain size, mean; Grain size description; Hashilan wetland; HashW_core; Holocene climate; HW; Kurtosis; Kurtosis description; loss on ignition; Magnetic susceptibility; PEATC; Peat corer; Pollen; Sediment type; Size fraction < 0.002 mm, clay; Size fraction 0.004-0.002 mm, 8.0-9.0 phi, very fine silt; Size fraction 0.008-0.004 mm, 7.0-8.0 phi, fine silt; Size fraction 0.016-0.008 mm, 6.0-7.0 phi, medium silt; Size fraction 0.032-0.016 mm, 5.0-6.0 phi, coarse silt; Size fraction 0.063-0.002 mm, silt, mud; Size fraction 0.063-0.032 mm, 4.0-5.0 phi, very coarse silt; Size fraction 0.125-0.063 mm, 3.0-4.0 phi, very fine sand; Size fraction 0.250-0.125 mm, 2.0-3.0 phi, fine sand; Size fraction 0.500-0.250 mm, 1.0-2.0 phi, medium sand; Size fraction 1.000-0.500 mm, 0.0-1.0 phi, coarse sand; Size fraction 2.000-0.630 mm, coarse sand; Skewness; Skewness description; Sorting; Sorting description; Texture; Vegetation dynamics; XRD; XRF For grain size, prior to grain size analyses, OM was removed by H2O2 (30 %) and carbonates were destroyed with HCl (10 %) from samples. For dispersion, 20 ml of Calgon [(NaPO3)n] was added and agitated overnight. On the next day, analyses were performed with a laser diffraction particle-size analyzer (Beckman Coulter LS 200) after ultrasonic treatment for 30 s. Each sample was measured at least four times for 60 s until a stable distribution was reached. Thereafter, the arithmetic mean was calculated for the best three sample runs. Grain size distributions and all statistical grain size parameters were calculated from the output of the LS 200 as geometric graphical measures according to Folk and Ward (1957) with the MS Excel-based macro Gradistat, Version 8.0 (Blott and Pye, 2001). Analyses were carried out in the GEOPOLAR lab at the University of Bremen. |
| title | Grain size in Hashilan Wetland sediment core, western Iran |
| topic | AGE; Atmospheric dust; Beckman Coulter Laser diffraction particle size analyzer LS 200; DEPTH, sediment/rock; Grain Size; Grain size, mean; Grain size description; Hashilan wetland; HashW_core; Holocene climate; HW; Kurtosis; Kurtosis description; loss on ignition; Magnetic susceptibility; PEATC; Peat corer; Pollen; Sediment type; Size fraction < 0.002 mm, clay; Size fraction 0.004-0.002 mm, 8.0-9.0 phi, very fine silt; Size fraction 0.008-0.004 mm, 7.0-8.0 phi, fine silt; Size fraction 0.016-0.008 mm, 6.0-7.0 phi, medium silt; Size fraction 0.032-0.016 mm, 5.0-6.0 phi, coarse silt; Size fraction 0.063-0.002 mm, silt, mud; Size fraction 0.063-0.032 mm, 4.0-5.0 phi, very coarse silt; Size fraction 0.125-0.063 mm, 3.0-4.0 phi, very fine sand; Size fraction 0.250-0.125 mm, 2.0-3.0 phi, fine sand; Size fraction 0.500-0.250 mm, 1.0-2.0 phi, medium sand; Size fraction 1.000-0.500 mm, 0.0-1.0 phi, coarse sand; Size fraction 2.000-0.630 mm, coarse sand; Skewness; Skewness description; Sorting; Sorting description; Texture; Vegetation dynamics; XRD; XRF |
| url | https://doi.org/10.1594/PANGAEA.956302 |