Charcoal concentration of sediment core LMAHA-18 from lake Mahasarika, northern Madagascar
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2024
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| _version_ | 1867171043155640320 |
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| author | Montade, Vincent Behling, Hermann Bremond, Laurent Rouland, Sylvie Daut, Gerhard Kasper, Thomas Favier, Charly |
| author_facet | Montade, Vincent Behling, Hermann Bremond, Laurent Rouland, Sylvie Daut, Gerhard Kasper, Thomas Favier, Charly |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The datasets provided here correspond to sedimentary charcoal counts, magnetic susceptibility measurements, and δ13C isotopic measurements obtained from a lacustrine sediment core recovered from Lake Maharasika in Montagne d'Ambre (northern Madagascar, 1,073 m asl). Fieldwork has been carried out in August 2018. The sediment core LMAHA-18 was taken from the central and deepest part of the lake (7 m water depth; 12.53509S, 49.17701E). Core LMAHA-18 was sampled with a Livingstone piston sediment corer operated from a small platform settled on two rubber boats. Using sampling tubes of ca. 5 cm diameter and 120 cm length, a total of 6 sections of about 100 cm sediment length were sampled with overlaps of 10-50 cm length. Preserved in aluminium tubes for transport to the laboratory, sediment was extruded from each aluminium tube and split into two sister cores, LMAHA-18a and LMAHA-18b. Each sister core was stored under cool (4°C) and dark conditions at the laboratory facilities (LMAHA-18a at the Friedrich-Schiller-University Jena and LMAHA-18b at the University of Goettingen, Germany). For extraction of charcoal particles, 1 cm3 of sediment was taken every cm along the LMAHA-18 core. Each sample was soaked in a 3% NaP2O4 solution plus bleach for several hours to deflocculate the sediment and oxidise organic matter. The samples were sieved through a 160 μm mesh and the carbon particles were counted using a x40 magnification stereomicroscope. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_968794 |
| institution | PANGAEA |
| language | en |
| publishDate | 2024 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Charcoal concentration of sediment core LMAHA-18 from lake Mahasarika, northern Madagascar Montade, Vincent Behling, Hermann Bremond, Laurent Rouland, Sylvie Daut, Gerhard Kasper, Thomas Favier, Charly AGE; Charcoal concentration; Core; CORE; DEPTH, sediment/rock; isotope; Lake sediment; LMAHA-18; macroscopic charcoal; Madagascar; Magnetic susceptibility; Sediment core; Stereo microscope, Leica [40x magnification]; δ13C analysis The datasets provided here correspond to sedimentary charcoal counts, magnetic susceptibility measurements, and δ13C isotopic measurements obtained from a lacustrine sediment core recovered from Lake Maharasika in Montagne d'Ambre (northern Madagascar, 1,073 m asl). Fieldwork has been carried out in August 2018. The sediment core LMAHA-18 was taken from the central and deepest part of the lake (7 m water depth; 12.53509S, 49.17701E). Core LMAHA-18 was sampled with a Livingstone piston sediment corer operated from a small platform settled on two rubber boats. Using sampling tubes of ca. 5 cm diameter and 120 cm length, a total of 6 sections of about 100 cm sediment length were sampled with overlaps of 10-50 cm length. Preserved in aluminium tubes for transport to the laboratory, sediment was extruded from each aluminium tube and split into two sister cores, LMAHA-18a and LMAHA-18b. Each sister core was stored under cool (4°C) and dark conditions at the laboratory facilities (LMAHA-18a at the Friedrich-Schiller-University Jena and LMAHA-18b at the University of Goettingen, Germany). For extraction of charcoal particles, 1 cm3 of sediment was taken every cm along the LMAHA-18 core. Each sample was soaked in a 3% NaP2O4 solution plus bleach for several hours to deflocculate the sediment and oxidise organic matter. The samples were sieved through a 160 μm mesh and the carbon particles were counted using a x40 magnification stereomicroscope. |
| title | Charcoal concentration of sediment core LMAHA-18 from lake Mahasarika, northern Madagascar |
| topic | AGE; Charcoal concentration; Core; CORE; DEPTH, sediment/rock; isotope; Lake sediment; LMAHA-18; macroscopic charcoal; Madagascar; Magnetic susceptibility; Sediment core; Stereo microscope, Leica [40x magnification]; δ13C analysis |
| url | https://doi.org/10.1594/PANGAEA.968794 |