Citation:

PANGAEA.979861

Name: Branched glycerol dialkyl glycerol tetraether (brGDGTs) from the NGaoundaba peat deposit (Tropical Africa) covering the Holocene
Published: 2025-03-31
License: https://creativecommons.org/licenses/by/4.0/
Keywords: African Humid Period; alkanes; Biomarker; GDGT; pollen analysis; Tropical peatlands

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Published: 2025-03-31 • DOI registered: 2025-03-31

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Abstract:

This dataset includes lipid biomarker data from a peat sequence (named NGBA19) collected at the NGaoundaba peat deposit in 2019. The NGaoundaba peat deposit is located in North East Cameroon (N 7.135°, E 13.690°, 1175 m a.s.l). The 6-meter core was collected using a Russian peat corer. The core was subsampled at 2.5-cm intervals. Analyses were performed on 73 samples. Measurements were performed between 2020 and 2024 at the LGL-TPE (ENS de Lyon and University Claude Bernard Lyon 1). The NGBA19 core covers the last 10 ka (detail on the datation method and results are given in Schaaff et al. (2023, doi:10.1016/j.orggeochem.2023.104589). This dataset is associated to a publication: Sensitivity to climate and vegetation dynamics of a peatland record from Central Cameroon during the African Humid Period (QSR). The publication details the full method used to obtain the data. The study focus on paleoclimatic and paleoenvironmental reconstructions particularly during and after the African Humid Period. Branched glycerol dialkyl glycerol tetraethers (brGDGTs) peak areas (to be quantified using the peat area of the internal strandard C-46 of Hopmans et al. (2016, doi:10.1016/j.orggeochem.2006.05.008). These analyses were performed using HPLC-MS.

Keyword(s):

African Humid Period; alkanes; Biomarker; GDGT; pollen analysis; Tropical peatlands

Supplement to:

Schaaff, Valentine; Grossi, Vincent; Makou, Matthew; Garcin, Yannick; Deschamps, Pierre; Hamelin, Bruno; Kiahtipes, Christopher Albert; Sebag, David; Ngounou Ngatcha, Benjamin; Ménot, Guillemette (in review): Sensitivity to climate and vegetation dynamics of a peatland record from Central Cameroon during the African Humid Period. Quaternary Science Reviews

Funding:

Agence Nationale de la Recherche (ANR), grant/award no. ANR-18-CE01-0005: ANR TAPIOCA

Coverage:

Latitude: 7.135000 * Longitude: 13.690000

Date/Time Start: 2019-02-01T00:00:00 * Date/Time End: 2019-02-01T00:00:00

Minimum DEPTH, sediment/rock: 0.100 m * Maximum DEPTH, sediment/rock: 5.900 m

Event(s):

NGBA19 * Latitude: 7.135000 * Longitude: 13.690000 * Date/Time: 2019-02-01T00:00:00 * Elevation: 1175.0 m * Location: NGaoundaba peatland, Northeastern Cameroon * Method/Device: Core (CORE)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Schaaff, Valentine		Geocode
2	AGE	Age	ka BP	Schaaff, Valentine	Age, 14C calibrated	Geocode
3	Sample mass	Samp m	g	Schaaff, Valentine		For quantification
4	Carbon, organic, total	TOC	%	Schaaff, Valentine	According to Schaaff et al. (2023)	For quantification
5	C46 Glycerol Dialkyl Glycerol Tetraether, per injection	C46 GDGT	ng/#	Schaaff, Valentine	According to Hopmans et al. (2016)	For quantification
6	C46 Glycerol Dialkyl Glycerol Tetraether, mass/charge ratio 744, peak area	C46 GDGT, m/z 744, peak area		Schaaff, Valentine		For quantification
7	Branched glycerol dialkyl glycerol tetraether, Ia (peak area)	brGDGT Ia peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
8	Branched glycerol dialkyl glycerol tetraether, Ib (peak area)	brGDGT Ib peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
9	Branched glycerol dialkyl glycerol tetraether, Ic (peak area)	brGDGT Ic peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
10	Branched glycerol dialkyl glycerol tetraether, IIa (peak area)	brGDGT IIa peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
11	Branched glycerol dialkyl glycerol tetraether, IIa' (peak area)	brGDGT IIa' peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
12	Branched glycerol dialkyl glycerol tetraether, IIa'' (peak area)	brGDGT IIa'' peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
13	Branched glycerol dialkyl glycerol tetraether, IIb (peak area)	brGDGT IIb peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
14	Branched glycerol dialkyl glycerol tetraether, IIb' (peak area)	brGDGT IIb' peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
15	Branched glycerol dialkyl glycerol tetraether, IIb'' (peak area)	brGDGT IIb'' peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
16	Branched glycerol dialkyl glycerol tetraether, IIc (peak area)	brGDGT IIc peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
17	Branched glycerol dialkyl glycerol tetraether, IIc' (peak area)	brGDGT IIc' peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
18	Branched glycerol dialkyl glycerol tetraether, IIc'' (peak area)	brGDGT IIc'' peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
19	Branched glycerol dialkyl glycerol tetraether, IIIa (peak area)	brGDGT IIIa peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
20	Branched glycerol dialkyl glycerol tetraether, IIIa' (peak area)	brGDGT IIIa' peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
21	Branched glycerol dialkyl glycerol tetraether, IIIa'' (peak area)	brGDGT IIIa'' peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
22	Branched glycerol dialkyl glycerol tetraether, IIIb (peak area)	brGDGT IIIb peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
23	Branched glycerol dialkyl glycerol tetraether, IIIb' (peak area)	brGDGT IIIb' peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
24	Branched glycerol dialkyl glycerol tetraether, IIIb'' (peak area)	brGDGT IIIb'' peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]
25	Branched glycerol dialkyl glycerol tetraether, IIIc (peak area)	brGDGT IIIc peak area		Schaaff, Valentine	High performance liquid chromatography (HPLC), Agilent, 1200 [APCI-MS]

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1659 data points

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Datasets with similar metadata

Schaaff, V; Grossi, V; Makou, M et al. (2025): Raw pollen counts from the NGaoundaba peat deposit (Tropical Africa) covering the Holocene. https://doi.org/10.1594/PANGAEA.979864
Schaaff, V; Grossi, V; Makou, M et al. (2025): General lipid biomarker from the NGaoundaba peat deposit (Tropical Africa) covering the Holocene. https://doi.org/10.1594/PANGAEA.979862
Schaaff, V; Grossi, V; Makou, M et al. (2025): Isotopic lipid biomarker from the NGaoundaba peat deposit (Tropical Africa) covering the Holocene. https://doi.org/10.1594/PANGAEA.979863