Montade, Vincent; Behling, Hermann; Bremond, Laurent; Rouland, Sylvie; Daut, Gerhard; Kasper, Thomas; Favier, Charly: Magnetic susceptibility of sediment core LMAHA-18 from lake Mahasarika, northern Madagascar [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.968795 (dataset in review)
Abstract:
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 magnetic susceptibility measurements, the core was scanned in 3 mm steps with three replicate measurements using an MS2E surface scanning sensor (Bartington Instruments).
Keyword(s):
Related to:
Montade, Vincent; Bremond, Laurent; Teixeira, Helena; Kasper, Thomas; Daut, Gerhard; Rasoamanana, Elysée; Ramavovolona, Perle; Favier, Charly; Arnaud, Fabien; Radespiel, Ute; Behling, Hermann (in review): Montane rain forest dynamics under changes in climate and human impact during the past millennia in northern Madagascar. Preprint, bioRxiv, https://doi.org/10.1101/2023.06.07.544115
Funding:
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. BE 2116/30: Demographic fluctuations in dynamic landscapes: the integration of molecular and paleoecological evidence in a primate model opens a validated window into the past
Coverage:
Latitude: -12.535090 * Longitude: 49.177010
Minimum DEPTH, sediment/rock: 0.02705 m * Maximum DEPTH, sediment/rock: 4.76348 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Montade, Vincent | Geocode | |
| 2 | AGE | Age | ka BP | Montade, Vincent | Geocode | |
| 3 | Magnetic susceptibility | MAGS | 10-6 SI | Montade, Vincent | Magnetic susceptibility meter, Bartington Instruments Ltd., MS2E [surface scanning sensor] |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1546 data points