Citation:

PANGAEA.964375

Name: δDeuterium measurements of selected n-alkanes (corrected to the VSMOW scale) in sediment core Haem13 from lake Hämelsee
Published: 2024-04-17
License: https://creativecommons.org/licenses/by/4.0/
Keywords: alkanes; Biodiversity; Chironomidae; deuterium; diatoms; ecosystem dynamics; GDGTs; Germany; Haemelsee; LOI; Pediastrum; XRF

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Abstract:

This dataset provides delta-Deuterium data for the Lateglacial sediment sequence retrieved from Lake Hämelsee (Germany) in 2013. Compound-specific hydrogen isotope ratios (expressed as δD) normalized to the Vienna Standard Mean Ocean Water (VSMOW) as well as measurement uncertainties (expressed as SD) are presented against both depth (m) and age (cal yr. BP). The data provides information on the Lateglacial development of local climate dynamics: the plant-wax derived δD signal is typically considered to reflect the hydrogen-isotopic composition of plant leaf water and, by extension, precipitation. We therefore interpret the trends in δD record here as an indicator of past hydrological change (cf Sachse et al., 2012). A total of 167 samples from the Lateglacial section of the core were processed using a Dionex 350 accelerated solvent extraction (ASE) system. Solid phase extraction (SPE) was used to separate the extracts into an aliphatic, aromatic and alcohol/fatty acid fraction. Prior to isotope ratio measurement, the aliphatic fraction was further fractionated on a Pasteur pipette column containing activated AgNO3 (10%) coated silica gel. Compound-specific hydrogen isotope ratios (expressed as δD) were subsequently measured on an isotope ratio mass spectrometer. All δD values are normalized to the Vienna Standard Mean Ocean Water (VSMOW) scale using a linear regression function between measured and certified δD values of a standard mix. We refer to Rach et al. (2020) for further details on the exact analytical setup. All measurements were performed in the laboratories of GeoForschungsZentrum Potsdam.

Keyword(s):

alkanes; Biodiversity; Chironomidae; deuterium; diatoms; ecosystem dynamics; GDGTs; Germany; Haemelsee; LOI; Pediastrum; XRF

Related to:

Engels, Stefan; Lane, Christine S; Hoek, Wim Z; Baneschi, Ilaria; Bouwman, Annerieke; Brogan, Eilis; Bronk Ramsey, Christopher; Collins, James A; de Bruijn, Renee; Haliuc, Aritina; Heiri, Oliver; Hubay, Katalin; Jones, Gwydion; Jones, Vivienne; Laug, Andreas; Merkt, Josef; Muschitiello, Francesco; Müller, Meike; Peters, Tom; Peterse, Francien; Pueschel, Ashley; Staff, Richard A; ter Schure, Anneke; Turner, Falko; van den Bos, Valerie; Wagner-Cremer, Frederike (2024): Biodiversity responses to Lateglacial climate change in the subdecadally-resolved record of Lake Hämelsee (Germany). Quaternary Science Reviews, 331, 108634, https://doi.org/10.1016/j.quascirev.2024.108634

References:

Rach, Oliver; Hadeen, Xennophone; Sachse, Dirk (2020): An automated solid phase extraction procedure for lipid biomarker purification and stable isotope analysis. Organic Geochemistry, 142, 103995, https://doi.org/10.1016/j.orggeochem.2020.103995

Funding:

European Cooperation in Science and Technology (COST), grant/award no. COST action ES0907 : ES0907 - INTegrating Ice core, MArine and TErrestrial records - 60,000 to 8000 years ago (INTIMATE)

Coverage:

Latitude: 52.766667 * Longitude: 9.316667

Date/Time Start: 2013-07-08T09:00:00 * Date/Time End: 2013-07-12T17:00:00

Minimum Elevation: 22.0 m * Maximum Elevation: 22.0 m

Event(s):

Haemelsee_Haem13 * Latitude Start: 52.766667 * Longitude Start: 9.316667 * Latitude End: 52.766667 * Longitude End: 9.316667 * Date/Time Start: 2013-07-08T09:00:00 * Date/Time End: 2013-07-12T17:00:00 * Elevation Start: 22.0 m * Elevation End: 22.0 m * Lake water depth: 3.4 m * Location: Lake Haemelsee, Germany * Method/Device: Niederreiter Piston corer (NPC) * Comment: Lake sediment sequence retrieved using a 60 mm piston corer deployed from a floating platform.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	ORDINAL NUMBER	Ord No		Engels, Stefan		Geocode
2	DEPTH, sediment/rock	Depth sed	m	Engels, Stefan		Geocode
3	AGE	Age	ka BP	Engels, Stefan		Geocode
4	n-Alkane C23, δD	C23 δD	‰ SMOW	Engels, Stefan	Isotope ratio mass spectrometer (IRMS)
5	n-Alkane C23, δD, standard deviation	C23 δD std dev	±	Engels, Stefan	Isotope ratio mass spectrometer (IRMS)
6	n-Alkane C25, δD	C25 δD	‰ SMOW	Engels, Stefan	Isotope ratio mass spectrometer (IRMS)
7	n-Alkane C25, δD, standard deviation	C25 δD std dev	±	Engels, Stefan	Isotope ratio mass spectrometer (IRMS)
8	n-Alkane C27, δD	C27 δD	‰ SMOW	Engels, Stefan	Isotope ratio mass spectrometer (IRMS)
9	n-Alkane C27, δD, standard deviation	C27 δD std dev	±	Engels, Stefan	Isotope ratio mass spectrometer (IRMS)
10	n-Alkane C29, δD	C29 δD	‰ SMOW	Engels, Stefan	Isotope ratio mass spectrometer (IRMS)
11	n-Alkane C29, δD, standard deviation	C29 δD std dev	±	Engels, Stefan	Isotope ratio mass spectrometer (IRMS)
12	n-Alkane C31, δD	C31 δD	‰ SMOW	Engels, Stefan	Isotope ratio mass spectrometer (IRMS)
13	n-Alkane C31, δD, standard deviation	C31 δD std dev	±	Engels, Stefan	Isotope ratio mass spectrometer (IRMS)
14	δ Deuterium, n-alkanes	δD n-alkanes	‰ SMOW	Engels, Stefan	Isotope ratio mass spectrometer (IRMS)	average of C27+C29+C31

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1603 data points

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