Citation:

PANGAEA.933814

Name: Concentrations of alkenones in Hala Hu sediment core H7
Published: 2021-07-19
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Alkenone; Biomarker; China; isotopes; Paleoclimate; Sediment core; Tibetan Plateau

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Published: 2021-07-19 • DOI registered: 2021-12-09

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Abstract:

Concentrations of alkenones were analysed in core H7 from Hala Hu, China by means of an Agilent 7890A gas chromatography (GC) instrument, equipped with a mass selective detector (MSD; Agilent 5975C Series) and a flame ionization detector (FID; Agilent 7683B Series). For the GC, an Agilent VF-200ms column (60 m, inner diameter 0.25 mm, film thickness 0.25 μm) was used.

The lake is located on the northern margin of the Tibetan Plateau (97.24 - 97.47°E, 38.12 - 38.25°N, 4078 m above sea level), along the modern marginal zone between the Asian Summer Monsoon (ASM) and westerlies influences. The core was drilled at the deepest point (65 m water depth) of the lake and extends from 212 to 636 cm sediment depth. According to the age-model (Yan et al., 2020) the covered time period is 7462 - 23610 cal yr BP.

Keyword(s):

Alkenone; Biomarker; China; isotopes; Paleoclimate; Sediment core; Tibetan Plateau

Related to:

Yan, Dada; Wünnemann, Bernd; Zhang, Yongzhan (2020): Late Quaternary lacustrine Ostracoda and their implications for hydro-climatic variation in Northeastern Tibetan Plateau. Earth-Science Reviews, 207, 103251, https://doi.org/10.1016/j.earscirev.2020.103251

Funding:

German Research Foundation (DFG), grant/award no. 259668396 : Palaeoclimatology of Central Asia and the northeastern Tibetan Plateau on basis of compound-specific isotope analysis of biomarkers

Coverage:

Latitude: 38.304980 * Longitude: 97.570810

Minimum DEPTH, sediment/rock: 2.12 m * Maximum DEPTH, sediment/rock: 6.20 m

Event(s):

Hala_Hu_2010-H7 (H7) * Latitude: 38.304980 * Longitude: 97.570810 * Elevation: 4079.0 m * Lake water depth: 64.5 m * Location: Hala Hu * Method/Device: Niederreiter Piston corer (NPC) * Comment: winter 2010

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Aichner, Bernhard		Geocode – composite depth
2	Calendar age, minimum/young	Cal age min	ka BP	Aichner, Bernhard		Age model of Yan et al., 2020
3	Calendar age, maximum/old	Cal age max	ka BP	Aichner, Bernhard		Age model of Yan et al., 2020
4	Calendar age	Cal age	ka BP	Aichner, Bernhard		wmean; Age model of Yan et al., 2020
5	Alkenone, C37:4, per unit sediment mass	C37:4/sed	ng/g	Aichner, Bernhard	Gas chromatography - mass spectrometry - flame ionization detector (GC/MS/FID) Agilent	dw
6	Alkenone, C37:3, per unit sediment mass	C37:3/sed	ng/g	Aichner, Bernhard	Gas chromatography - mass spectrometry - flame ionization detector (GC/MS/FID) Agilent	dw
7	Alkenone, C37:2, per unit sediment mass	C37:2/sed	ng/g	Aichner, Bernhard	Gas chromatography - mass spectrometry - flame ionization detector (GC/MS/FID) Agilent	dw
8	Alkenone, C38:4, per unit sediment mass	C38:4/sed	ng/g	Aichner, Bernhard	Gas chromatography - mass spectrometry - flame ionization detector (GC/MS/FID) Agilent	dw
9	Alkenone, C38:3, per unit sediment mass	C38:3/sed	ng/g	Aichner, Bernhard	Gas chromatography - mass spectrometry - flame ionization detector (GC/MS/FID) Agilent	dw
10	Alkenone, C38:2, per unit sediment mass	C38:2/sed	ng/g	Aichner, Bernhard	Gas chromatography - mass spectrometry - flame ionization detector (GC/MS/FID) Agilent	dw
11	Alkenone, C39:4, per unit sediment mass	C39:4/sed	ng/g	Aichner, Bernhard	Gas chromatography - mass spectrometry - flame ionization detector (GC/MS/FID) Agilent	dw
12	Alkenone, C39:3, per unit sediment mass	C39:3/sed	ng/g	Aichner, Bernhard	Gas chromatography - mass spectrometry - flame ionization detector (GC/MS/FID) Agilent	dw
13	Alkenone, C39:2, per unit sediment mass	C39:2/sed	ng/g	Aichner, Bernhard	Gas chromatography - mass spectrometry - flame ionization detector (GC/MS/FID) Agilent	dw

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

672 data points

Data

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

1 Depth sed [m]	2 Cal age min [ka BP]	3 Cal age max [ka BP]	4 Cal age [ka BP]	5 C37:4/sed [ng/g]	6 C37:3/sed [ng/g]	7 C37:2/sed [ng/g]	8 C38:4/sed [ng/g]	9 C38:3/sed [ng/g]	10 C38:2/sed [ng/g]	11 C39:4/sed [ng/g]	12 C39:3/sed [ng/g]	13 C39:2/sed [ng/g]
2.12	7.194	7.832	7.462	264.9	412.2	56.4	52.3	187.3	72.4	17.6	78.1	9.8
2.16	7.277	8.078	7.604	37.9	71.2	9.9	7.3	31.0	13.1	2.6	14.9	1.9
2.23	7.432	8.398	7.856	304.3	447.9	78.5	94.9	277.3	113.8	24.3	90.4	12.6
2.27	7.529	8.570	7.996	0.1	0.4	0.4	0.1	0.3	0.2	0.1	0.5	0.5
2.28	7.555	8.610	8.030	47.2	82.0	9.4	60.0	214.1	45.8	3.7	22.2	2.6
2.34	7.702	8.863	8.240	129.4	50.4	13.6	27.8	49.9	20.8	17.3	18.1	3.5
2.50	8.170	9.472	8.800	21.2	21.5	8.9	4.4	23.0	14.8	2.5	7.8	2.5
2.53	8.280	9.568	8.907	74.2	25.2	7.4	13.4	25.9	13.5	10.8	11.0	3.0
2.63	8.590	9.910	9.251	7.7	6.9	2.6	1.9	6.5	4.8	1.6	3.7	1.8
2.66	8.693	10.008	9.354	13.1	3.0	1.0	0.7	2.2	1.7	1.1	1.6	0.4
2.69	8.801	10.095	9.459	8.7	1.9	0.8	0.6	1.6	1.1	0.2	1.0	0.5
2.79	9.137	10.393	9.805	26.0	47.2	10.4	5.0	20.5	12.5	3.4	11.7	2.9
2.82	9.268	10.477	9.909	42.2	73.4	16.2	8.9	43.9	25.7	8.8	20.1	7.4
2.85	9.367	10.567	10.011	78.6	44.8	11.2	13.8	37.3	16.6	14.9	17.5	4.1
2.91	9.625	10.720	10.216	83.1	56.0	13.5	15.8	35.5	17.4	15.6	17.2	3.2
2.97	9.893	10.881	10.430	3.3	24.3	6.7	2.2	12.7	7.6	0.9	6.9	1.3
3.01	10.074	10.984	10.570	109.2	213.4	33.6	37.1	155.8	57.6	12.2	51.5	5.6
3.04	10.217	11.051	10.674	43.3	43.3	6.7	26.8	43.9	16.5	3.7	10.3	2.3
3.06	10.337	11.096	10.742	64.6	66.4	10.0	51.8	83.8	25.2	3.1	13.0	2.5
3.10	10.540	11.174	10.879	149.1	56.3	11.6	26.2	50.6	18.4	24.5	23.6	4.0
3.12	10.693	11.198	10.944	43.9	40.2	5.8	27.3	44.5	13.6	2.4	8.3	1.7
3.21	10.910	11.576	11.212	9.7	19.4	2.3	15.1	40.9	9.7	1.6	5.8	2.2
3.27	11.021	11.819	11.386	2.1	5.9	1.4	1.0	7.9	3.2	0.2	1.4	0.7
3.31	11.105	11.980	11.502	37.6	16.1	4.1	6.0	14.3	6.6	7.0	9.2	2.0
3.42	11.339	12.356	11.817	56.1	20.1	5.8	9.9	19.6	10.0	7.5	9.1	2.3
3.49	11.487	12.596	12.014	37.4	17.0	3.2	6.5	13.3	5.4	6.4	7.4	1.7
3.55	11.630	12.794	12.191	0.6	2.1	0.9	0.1	2.1	1.5	0.3	0.9	0.2
3.61	11.793	12.959	12.367	1.4	2.7	0.6	0.4	1.9	0.7	0.4	2.2	0.3
4.41	13.957	14.914	14.498	2.1	2.4	0.6	0.9	0.7	0.3	0.3	0.5	0.3
4.44	14.005	14.970	14.546	4.7	2.9	0.5	2.3	3.6	1.2	0.7	1.0	0.7
4.48	14.072	15.030	14.609	4.9	7.1	2.3	2.1	2.3	1.9	0.5	1.2	0.5
4.51	14.121	15.083	14.658	2.5	9.4	1.6	1.0	3.2	1.9	0.6	1.9	0.8
4.57	14.240	15.183	14.756	23.0	34.0	5.4	3.0	14.5	8.5	2.6	6.6	1.3
4.60	14.296	15.240	14.804	14.8	15.4	3.6	2.4	7.8	3.6	0.9	3.7	0.6
4.64	14.358	15.306	14.867	5.3	4.6	0.7	0.9	1.8	0.8	0.6	1.1	0.2
4.68	14.427	15.367	14.929	0.1	0.3	0.0	0.1	0.3	0.1	0.0	0.0	0.0
4.74	14.532	15.467	15.025	0.2	0.3	0.0	0.2	0.4	0.2	0.0	0.0	0.0
4.78	14.598	15.527	15.089	11.1	5.7	0.9	1.3	2.3	1.2	1.3	1.8	0.4
4.84	14.711	15.630	15.184	0.6	0.5	0.1	0.2	0.3	0.2	0.0	0.0	0.0
4.88	14.783	15.702	15.249	1.6	1.3	0.2	0.4	0.6	0.2	0.0	0.0	0.0
4.92	14.858	15.769	15.313	13.9	10.8	1.5	2.0	3.8	2.1	1.1	3.9	0.4
4.94	14.893	15.799	15.346	5.5	8.2	1.7	0.8	2.8	2.2	0.5	2.0	0.4
4.98	14.971	15.865	15.411	1.7	1.5	0.4	0.3	0.7	0.4	0.0	0.0	0.0
5.04	15.079	15.958	15.505	2.6	6.9	1.3	0.3	1.6	1.3	0.0	0.0	0.0
5.09	15.180	16.034	15.585	2.5	2.2	0.7	0.5	1.1	0.7	0.0	0.0	0.0
5.10	15.200	16.052	15.601	2.0	3.6	1.2	0.4	1.6	1.3	0.6	0.9	0.3
5.16	15.317	16.128	15.694	0.6	0.7	0.2	0.1	0.4	0.2	0.2	0.4	0.2
5.22	15.426	16.217	15.788	2.1	2.5	0.9	0.7	1.7	0.7	0.7	1.0	0.5
5.28	15.541	16.305	15.884	1.8	2.1	0.4	0.8	0.6	0.4	0.0	0.0	0.0
5.44	15.939	17.350	16.498	0.6	1.0	0.3	0.5	1.4	0.4	0.0	0.0	0.0
5.48	16.094	17.888	16.807	2.4	3.3	0.5	1.8	3.9	1.1	0.0	0.0	0.0
5.56	16.480	18.701	17.440	2.0	4.4	0.5	0.6	1.4	0.7	0.5	3.9	0.8
5.74	17.540	20.261	18.855	3.0	4.9	0.9	1.3	5.0	2.0	0.5	1.8	0.7
6.08	20.147	22.766	21.559	1.0	2.3	0.6	0.3	0.9	0.5	0.0	0.0	0.0
6.10	20.337	22.889	21.720	0.2	0.5	0.1	0.0	0.0	0.0	0.0	0.0	0.0
6.20	21.223	23.468	22.502	0.0	0.2	0.0	0.0	0.0	0.0	0.0	0.0	0.0