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Brisset, Elodie (2020): Sedimentological and geochemical compositions of the Lake Petit sediments (Southern French Alps) [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.921655

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Published: 2020-08-17 • DOI registered: 2020-08-17

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Abstract:
A 144-cm long sediment core named PET09P2 (coordinates N 44°06.789; E 7°11.342) has been taken in 2009 in the Lake Petit (2200 m a.s.l., in the Southern Alps, city of Valdeblore, France), covering the Mid- to Late-Holocene period (last 4800 years BP). This dataset includes the sedimentological and geochemical analyses, that were used as proxies to reconstruct catchment and lake paleoenvironmental changes:
- Age-depth model based on radiocarbon ages (7 samples) and short-lived isotopes (210Pb, 137Cs).
- Clay-size particles abundance (Grain-size laser diffraction measured on a Malvern Mastersizer S at 5 mm sampling intervals).
- Total organic carbon concentrations in per cent (24 discrete samples by Rock-Eval Pyrolysis on a Turbo Model RE6 pyrolyser), as well as Hydrogen and Oxygen Indexes (mg/g of total organic carbon).
- Major element concentrations in per cent (SiO2, Al2O3, Fe2O3, MnO, MgO, CaO, Na2O, K2O, TiO2, P2O5 measured by mass spectrometry on an ICP-AES Thermo X7 after LiBO2 alkaline fusion) and, biogenic silica (SiO2biog) concentration in per cent measured after wet-alkaline leaching using molybdate-yellow spectrophotometry on a Jasco V-650 Spectrophotometer.
- Fourier Transformed Infrared Spectroscopy (FTIRS) inference for SiO2 biogenic and TOC concentrations in per cent (continuous sampling at 1 cm intervals), measured on a Nicolet 380 Smart Diffuse Reflectance spectrometer.
- XRF core scanning inference for Detrital Fraction (DF% = 6.2*Ln[Ti/Si]+20.8), and Chemical Index of Alteration (Ln[Ti/Ca]); measure on an ITRAX Core Scanner (Mo source, 2 mm increment, integration time 60 s, energy 40 kV-35 mA). As shown in Brisset et al., (2013), the relationship between the Ln(Ti/Ca) XRF intensities and the CIA (%) is linear and positive, and both are highly related (n = 20, r = 0.90).
Keyword(s):
4.2 kyrs BP event; Alps; Holocene; human impact; Lake sediment; Mediterranean; Soil erosion
Related to:
Brisset, Elodie; Guiter, Frederic; Miramont, Cécile; Delhon, Claire; Arnaud, Fabien; Disnar, Jean-Robert; Poulenard, Jérôme; Anthony, Edward J; Meunier, Jean-Dominique; Wilhelm, Bruno; Pailles, Christine (2012): Approche multidisciplinaire d'une séquence lacustre holocène dans les alpes du sud au Lac Petit (Mercantour, alt. 2 200 m, France) : histoire d'un géosystème dégradé. Quaternaire, vol. 23/4), https://doi.org/10.4000/quaternaire.6390
Brisset, Elodie; Miramont, Cécile; Guiter, Frederic; Anthony, Edward J; Tachikawa, Kazuyo; Poulenard, Jérôme; Arnaud, Fabien; Delhon, Claire; Meunier, Jean-Dominique; Bard, Edouard; Suméra, Franck (2013): Non-reversible geosystem destabilisation at 4200 cal. BP: Sedimentological, geochemical and botanical markers of soil erosion recorded in a Mediterranean alpine lake. The Holocene, 23(12), 1863-1874, https://doi.org/10.1177/0959683613508158
Coverage:
Latitude: 44.113150 * Longitude: 7.189030
Date/Time Start: 2009-01-01T00:00:00 * Date/Time End: 2009-01-01T00:00:00
Event(s):
PET09P2 (Lake Petit) * Latitude: 44.113150 * Longitude: 7.189030 * Date/Time: 2009-01-01T00:00:00 * Elevation: 2200.0 m * Location: Alps * Method/Device: Core (CORE)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
6 datasets

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Datasets listed in this bundled publication

  1. Brisset, E (2020): (Table 1) Age-depth model of sediment core PET09P2 from Lake Petit (Southern French Alps). https://doi.org/10.1594/PANGAEA.921646
  2. Brisset, E (2020): (Table 2) Clay-size particles abundances of sediment core PET09P2 from Lake Petit (Southern French Alps). https://doi.org/10.1594/PANGAEA.921647
  3. Brisset, E (2020): (Table 3) Total organic carbon concentration and Hydrogen/Oxygen indices of sediment core PET09P2 from Lake Petit (Southern French Alps). https://doi.org/10.1594/PANGAEA.921648
  4. Brisset, E (2020): (Table 4) Major element oxides of sediment core PET09P2 from Lake Petit (Southern French Alps). https://doi.org/10.1594/PANGAEA.921649
  5. Brisset, E (2020): (Table 5) Fourier Transformed Infrared Spectroscopy inference for biogenic silica and TOC of sediment core PET09P2 from Lake Petit (Southern French Alps). https://doi.org/10.1594/PANGAEA.921650
  6. Brisset, E (2020): (Table 6) Detrital fraction and weathering idex of sediment core PET09P2 from Lake Petit (Southern French Alps). https://doi.org/10.1594/PANGAEA.921653