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Plikk, Anna; Engels, Stefan; Fernández-Fernández, Maria; Katrantsiotis, Christos; Kylander, Malin E; Löwemark, Ludvig; Salonen, Sakari; Väliranta, Minna; Helmens, Karin (2025): Loss-on-ignition (LOI) data for the Eemian sediment sequence retrieved from Sokli (Finland) in 2010 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.979956

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Published: 2025-04-09 • DOI registered: 2025-05-08

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Abstract:
This dataset provides Loss-on-ignition (LOI) data for the Eemian sediment sequence retrieved from Sokli (Finland) in 2010. LOI values (%) are presented against both depth (m) and age (ka BP). The LOI dataset was used to provide information on Eemian landscape dynamics at Sokli (Plikk et al., 2016). A total of 112 samples were analyzed for LOI. Subsamples of 1 cm3 were dried in a 105 °C oven for 24 hrs before being placed in a furnace at 550 °C for 4 hrs and at 950 °C for 1 hour. Loss-on-ignition was calculated by comparing the dry weight of the samples before and after combustion at 550 °C following Heiri et al. (2001) and results are expressed as a percentage. The analyses were performed in the laboratories of Stockholm University, Sweden.
Keyword(s):
Chironomids; C/N; Diatom; Eemian; Finland; Itrax; loss on ignition; macrobotanical remains; MIS 5e; n-alkanes; non-pollen palynomorphs; Pollen; Sokli; stabe isotopes
Related to:
Helmens, Karin F; Salonen, J Sakari; Plikk, Anna; Engels, Stefan; Väliranta, Minna; Kylander, Malin E; Brendryen, J; Renssen, Hans (2015): Major cooling intersecting peak Eemian Interglacial warmth in northern Europe. Quaternary Science Reviews, 122, 293-299, https://doi.org/10.1016/j.quascirev.2015.05.018
Katrantsiotis, Christos; Norström, Elin; Smittenberg, Rienk H; Salonen, J Sakari; Plikk, Anna; Helmens, Karin (2021): Seasonal variability in temperature trends and atmospheric circulation systems during the Eemian (Last Interglacial) based on n-alkanes hydrogen isotopes from Northern Finland. Quaternary Science Reviews, 273, 107250, https://doi.org/10.1016/j.quascirev.2021.107250
Kylander, Malin E; Plikk, Anna; Rydberg, Johan; Löwemark, Ludvig; Salonen, J Sakari; Fernández-Fernández, Maria; Helmens, Karin (2018): New insights from XRF core scanning data into boreal lake ontogeny during the Eemian (Marine Isotope Stage 5e) at Sokli, northeast Finland. Quaternary Research, 89(1), 352-364, https://doi.org/10.1017/qua.2017.84
Plikk, Anna (2018): The Eemian Interglacial at Sokli, northern Finland [dissertation]. Stockholm University
Plikk, Anna; Engels, Stefan; Luoto, Tomi P; Nazarova, Larisa B; Salonen, J Sakari; Helmens, Karin F (2019): Chironomid-based temperature reconstruction for the Eemian Interglacial (MIS 5e) at Sokli, northeast Finland. Journal of Paleolimnology, 61(3), 355-371, https://doi.org/10.1007/s10933-018-00064-y
Plikk, Anna; Risberg, Jan; Helmens, Karin F (2021): Diatom assemblages from an Eemian palaeolake in Northern Europe with morphological observations of rare Aulacoseira sp. resting spores. Diatom Research, 36(4), 313-321, https://doi.org/10.1080/0269249X.2021.2001381
Salonen, J Sakari; Helmens, Karin F; Brendryen, Jo; Kuosmanen, Niina; Väliranta, Minna; Goring, Simon J; Korpela, Mikko; Kylander, Malin E; Philip, Annemarie; Plikk, Anna; Renssen, Hans; Luoto, Miska (2018): Abrupt high-latitude climate events and decoupled seasonal trends during the Eemian. Nature Communications, 9(1), 2851, https://doi.org/10.1038/s41467-018-05314-1
References:
Heiri, Oliver; Lotter, André F; Lemcke, G (2001): Loss on ignition as a method for estimating organic and carbonate content in sediments: reproducibility and comparability of results. Journal of Paleolimnology, 25(1), 101-110, https://doi.org/10.1023/A:1008119611481
Plikk, Anna; Helmens, Karin F; Fernández-Fernández, Maria; Kylander, Malin E; Löwemark, Ludvig; Risberg, Jan; Salonen, J Sakari; Väliranta, Minna; Weckström, Jan (2016): Development of an Eemian (MIS 5e) Interglacial palaeolake at Sokli (N Finland) inferred using multiple proxies. Palaeogeography, Palaeoclimatology, Palaeoecology, 463, 11-26, https://doi.org/10.1016/j.palaeo.2016.09.008
Funding:
Academy of Finland, grant/award no. 1278692
Academy of Finland, grant/award no. 1310649
Coverage:
Latitude: 67.800278 * Longitude: 29.300278
Date/Time Start: 2010-02-15T08:00:00 * Date/Time End: 2010-02-15T17:00:00
Minimum DEPTH, sediment/rock: 16.015 m * Maximum DEPTH, sediment/rock: 28.420 m
Event(s):
Sokli_2010/4 * Latitude: 67.800278 * Longitude: 29.300278 * Date/Time Start: 2010-02-15T08:00:00 * Date/Time End: 2010-02-15T17:00:00 * Elevation: 220.0 m * Location: Finland * Method/Device: Rotary-percussion drill (RPDRILL)
Comment:
Further funding was provided by Swedish Nuclear Fuel and Waste Management Company (SKB) and Bolin Centre for Climate Research (Stockholm University).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 DEPTH, sediment/rockDepth sedmPlikk, AnnaGeocode
2 AGEAgeka BPPlikk, AnnaGeocode
3 Loss on ignitionLOI%Plikk, AnnaDetermined by loss on ignition at 550 °C, after Heiri et al. (2001)
4 Loss on ignitionLOI%Plikk, AnnaDetermined by loss on ignition at 950°C, after Heiri et al. (2001)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
224 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Depth sed [m]		2 
Age [ka BP]		3 
LOI [%]
(Determined by loss on ignitio...)		4 
LOI [%]
(Determined by loss on ignitio...)
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