Citation:

PANGAEA.933814

Name: δD values of biomarkers in Hala Hu sediment core H11
Published: 2021-07-30
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Alkenone; Biomarker; China; highly branched isoprenoid (HBI); isotopes; n-alkane; n-alkene; Paleoclimate; Sediment core; Tibetan Plateau

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Published: 2021-07-30 • DOI registered: 2021-12-09

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Abstract:

Hydrogen isotope composition of aquatic (mid-chain n-alkenes, C20-HBIs, C37-alkenones) and terrestrial (long-chain n-alkanes) biomarker groups were analysed in core H11 from Hala Hu, China. 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) of the lake and extends from 0 to 212 cm sediment depth. According to the age-model (Yan et al., 2020) the covered time period is modern - 9216 cal yr BP.

For separate δD-analysis of n-alkanes and n-alkenes, after quantification the non-polar aliphatic fraction was further split chromatographically into a saturated and unsaturated fraction, using aluminum-coated silicagel as stationary phase and hexane and DCM as solvents. Compound specific hydrogen isotope values were then obtained by using gas chromatography isotope ratio mass spectrometry (GC-IRMS). We used a Thermo Scientific® Trace GC equipped with a Restek RTX-5 column (30 m, inner diameter 0.25 mm, film thickness 0.25 μm). The GC was connected via a GC Isolink with high temperature combustion furnace (1400 °C) and a Conflo IV interface to a Delta V Plus isotope ratio mass spectrometer.

The δD values of the alkenones were determined by a GC/Thermal Conversion/isotope ratio monitoring mass spectrometer (GC-TC-irMS). For this a GC, equipped with a CPsil 5 CB column (25 meters, 0.32 mm inner diameter, film thickness 0.4 μm) was coupled to a GC-isolink I via a Conflo IV to a Thermo Electron DELTA V mass spectrometer.

Keyword(s):

Alkenone; Biomarker; China; highly branched isoprenoid (HBI); isotopes; n-alkane; n-alkene; Paleoclimate; Sediment core; Tibetan Plateau

Further details:

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: 38.304950 * Longitude: 97.570790

Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 2.60 m

Event(s):

Hala_Hu_2011-H11 (H11) * Latitude: 38.304950 * Longitude: 97.570790 * Elevation: 4079.0 m * Lake water depth: 64.5 m * Location: Hala Hu * Method/Device: Niederreiter Piston corer (NPC) * Comment: winter 2011

Comment:

#: single measurement

empty cells: no data

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	n-Alkene C23:1, δD	C23:1 δD	‰ SMOW	Aichner, Bernhard	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
6	n-Alkene C23:1, δD, standard deviation	C23:1 δD std dev	±	Aichner, Bernhard	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
7	n-Alkene C25:1, δD	C25:1 δD	‰ SMOW	Aichner, Bernhard	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
8	n-Alkene C25:1, δD, standard deviation	C25:1 δD std dev	±	Aichner, Bernhard	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
9	n-Alkene C27:1, δD	C27:1 δD	‰ SMOW	Aichner, Bernhard	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
10	n-Alkene C27:1, δD, standard deviation	C27:1 δD std dev	±	Aichner, Bernhard	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
11	n-Alkane C29, δD	C29 δD	‰ SMOW	Aichner, Bernhard	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
12	n-Alkane C29, δD, standard deviation	C29 δD std dev	±	Aichner, Bernhard	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
13	n-Alkane C31, δD	C31 δD	‰ SMOW	Aichner, Bernhard	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
14	n-Alkane C31, δD, standard deviation	C31 δD std dev	±	Aichner, Bernhard	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
15	Sum alkenones C37, δD	(C37) δD	‰ SMOW	Aichner, Bernhard	Gas chromatography - thermal conversion - isotope ratio monitoring mass spectometer (GC-TC-irMS)
16	Sum alkenones C37, δD, standard deviation	(C37) δD std dev	±	Aichner, Bernhard	Gas chromatography - thermal conversion - isotope ratio monitoring mass spectometer (GC-TC-irMS)
17	Highly branched isoprenoids C20, δD	C20 HBI δD	‰ SMOW	Aichner, Bernhard	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
18	Highly branched isoprenoids C20, δD, standard deviation	C20 HBI δD std dev	±	Aichner, Bernhard	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1098 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 C23:1 δD [‰ SMOW]	6 C23:1 δD std dev [±]	7 C25:1 δD [‰ SMOW]	8 C25:1 δD std dev [±]	9 C27:1 δD [‰ SMOW]	10 C27:1 δD std dev [±]	11 C29 δD [‰ SMOW]	12 C29 δD std dev [±]	13 C31 δD [‰ SMOW]	14 C31 δD std dev [±]	15 (C37) δD [‰ SMOW]	16 (C37) δD std dev [±]	17 C20 HBI δD [‰ SMOW]	18 C20 HBI δD std dev [±]
0.01	-0.044	-0.004	-0.022							-175	4.2	-183	4.0
0.10	0.104	0.668	0.312							-177	0.4	-183	1.4
0.13	0.178	0.777	0.424							-176	#	-186	#	-128	3.7
0.16	0.235	0.953	0.533							-169	4.4	-179	#
0.17	0.261	0.988	0.569							-175	0.5	-183	2.1
0.19	0.297	1.073	0.640							-177	#	-180	#
0.20	0.310	1.119	0.676							-170	4.2	-181	5.2
0.25	0.427	1.326	0.864							-171	#	-177	#
0.26	0.477	1.349	0.904							-173	6.2	-181	6.0
0.28	0.537	1.412	0.985							-181	5.9	-182	5.1
0.29	0.556	1.456	1.025							-178	1.2	-184	2.8	-118	2.7
0.31	0.631	1.546	1.105							-177	2.0	-186	2.1
0.32	0.675	1.570	1.144							-175	5.3	-184	6.8
0.34	0.736	1.637	1.222							-174	#	-184	#
0.35	0.764	1.680	1.261							-172	0.8	-186	3.8
0.37	0.856	1.713	1.329							-175	5.2	-186	1.0
0.38	0.889	1.740	1.363							-171	1.5	-182	2.4
0.40	0.939	1.811	1.431							-174	0.4	-183	1.9	-129	2.8
0.43	1.120	1.862	1.543							-176	1.1	-187	1.5
0.46	1.291	1.934	1.657							-175	1.8	-184	0.0
0.47	1.376	1.946	1.696							-171	8.6	-180	7.3
0.49	1.510	1.978	1.774							-170	2.4	-179	2.3
0.50	1.547	2.008	1.813							-173	2.7	-179	4.9
0.53	1.837	2.087	1.941							-172	11.8	-188	2.8
0.55	1.891	2.201	2.025							-175	1.7	-177	7.0	-129	3.7
0.58	1.990	2.382	2.183							-178	1.4	-186	2.9
0.59	2.005	2.473	2.235							-175	3.1	-183	5.0
0.61	2.080	2.604	2.329							-176	5.2	-187	4.1
0.67	2.248	2.845	2.533							-174	3.4	-188	2.0
0.68	2.264	2.866	2.549							-168	#	-177	3.0
0.70	2.296	2.915	2.580							-169	#	-180	#	-141	0.1
0.76	2.433	3.047	2.675							-173	6.3	-180	0.4
0.77	2.458	3.073	2.691							-170	6.3	-180	7.7
0.79	2.491	3.128	2.723							-174	8.1	-182	2.9
0.82	2.555	3.204	2.771							-170	#	-183	#
0.83	2.575	3.229	2.787							-172	0.8	-183	1.8	-135	3.0
0.86	2.709	3.327	2.864							-173	#	-183	#
0.88	2.769	3.435	2.955							-174	4.3	-183	3.8
0.94	2.964	3.776	3.492							-177	10.9	-181	6.2	-139	2.0
0.95	2.989	3.906	3.602							-176	2.8	-185	2.1	-137	1.0
0.97	3.051	3.937	3.640							-181	3.2	-182	4.3	-111	1.5
0.98	3.079	3.956	3.660							-179	1.3	-186	5.0
1.00	3.127	3.999	3.698							-177	3.0	-188	3.6
1.01	3.161	4.013	3.716							-171	0.5	-184	3.7	-135	1.7
1.03	3.221	4.043	3.748							-179	#	-186	#
1.04	3.248	4.058	3.763							-180	2.9	-190	3.0	-122	0.5
1.06	3.310	4.095	3.797							-172	3.8	-189	3.4
1.12	3.496	4.207	3.902							-175	2.3	-187	2.8
1.16	3.613	4.279	3.970							-178	4.2	-187	4.6	-156	0.1
1.18	3.696	4.307	4.005							-168	8.0	-182	4.7
1.19	3.726	4.323	4.022							-170	9.1	-184	9.6
1.21	3.796	4.354	4.056							-174	1.6	-183	5.4
1.22	3.840	4.364	4.073							-175	4.8	-187	3.3
1.25	3.940	4.409	4.125							-173	#	-181	#
1.30	4.036	4.684	4.290							-169	10.4	-188	0.2	-117	5.1
1.31	4.071	4.718	4.330							-180	2.3	-192	1.7	-114	3.6
1.33	4.112	4.827	4.410							-174	5.7	-185	4.0	-131	1.2	-131	#
1.34	4.126	4.901	4.450							-178	5.2	-184	3.4
1.36	4.172	5.022	4.530							-177	1.4	-187	1.1
1.37	4.202	5.064	4.571							-179	3.9	-187	0.8	-131	3.5
1.39	4.239	5.188	4.651							-180	3.7	-191	4.2
1.40	4.254	5.258	4.691							-181	0.9	-193	1.0	-111	1.8
1.42	4.319	5.325	4.770							-182	1.5	-191	0.9	-125	0.1
1.45	4.387	5.485	4.889			-105	0.4	-85	3.6	-175	3.8	-188	2.4	-149	2.2
1.46	4.427	5.519	4.928			-110	0.1			-178	6.6	-186	2.0
1.48	4.485	5.598	5.007			-109	#			-181	1.5	-194	0.3	-154	0.0
1.49	4.504	5.649	5.046							-177	4.1	-188	2.7
1.51	4.563	5.745	5.125			-108	1.2	-80	3.5	-182	3.6	-191	5.2	-148	0.9	-134	1.8
1.54	4.652	5.859	5.243	-97	#	-104	5.3	-75	#	-181	5.8	-188	1.1	-160	2.5
1.55	4.672	5.904	5.282	-112	#	-109	#			-184	1.5	-196	1.7
1.58	4.807	6.028	5.403							-182	0.2	-194	0.1
1.60	4.853	6.124	5.482							-179	8.2	-195	2.4
1.61	4.910	6.148	5.521							-182	1.5	-195	1.0
1.63	4.980	6.210	5.602							-182	1.1	-194	0.2
1.64	5.008	6.252	5.642							-181	0.5	-194	0.2
1.66	5.090	6.327	5.721							-180	4.9	-188	7.6	-152	1.8
1.72	5.339	6.536	5.958			-41	0.2	-47	2.4	-180	8.0	-193	7.4
1.73	5.381	6.563	5.999			-60	0.5	-59	0.8	-183	4.0	-192	6.2
1.75	5.441	6.655	6.080	-83	1.7	-66	1.4	-76	2.0	-182	4.6	-195	4.4			-133	1.0
1.76	5.506	6.678	6.118							-182	4.9	-193	4.4	-157	0.2	-130	0.5
1.78	5.590	6.736	6.193			-43	0.7	-55	1.7	-187	0.1	-196	0.2
1.79	5.628	6.773	6.231			-55	0.3	-63	0.8	-182	6.6	-194	6.1			-138	3.5
1.81	5.720	6.832	6.306	-73	7.3	-47	0.0	-56	5.0	-184	0.6	-193	0.2			-138	#
1.82	5.771	6.850	6.344	-73	2.5	-60	0.1	-69	0.3	-188	0.4	-199	0.8
1.84	5.848	6.904	6.421			-55	0.3	-71	4.5	-190	1.3	-199	0.0	-158	1.5	-141	#
1.87	5.977	6.976	6.534	-64	3.8	-55	2.0	-77	#	-185	#	-196	3.0			-145	#
1.93	6.260	7.127	6.763	-74	3.6	-48	1.0	-48	6.4	-181	0.4	-199	1.1			-146	0.4
1.94	6.296	7.152	6.801							-186	1.6	-206	0.9
1.96	6.418	7.202	6.878							-196	0.8	-192	1.6
1.99	6.582	7.249	6.995	-74	5.3	-57	1.1	-65	13.6	-188	7.1	-193	2.7	-160	1.2	-140	2.6
2.00	6.617	7.276	7.033	-72	#	-68	8.4	-83	12.7	-184	0.9	-195	1.2			-150	10.5
2.02	6.834	7.289	7.110	-78	2.1	-82	1.0	-89	1.8	-191	2.8	-200	6.1			-152	#
2.03	6.929	7.299	7.148	-78	#	-93	2.4			-194	1.3	-204	1.4			-144	1.4
2.05	7.050	7.345	7.228			-53	0.8	-61	1.3	-191	1.2	-201	0.9	-165	2.1
2.07	7.099	7.471	7.296							-188	1.3	-196	5.9
2.09	7.124	7.650	7.360							-189	1.1	-202	0.4
2.12	7.194	7.832	7.462			-68	1.2	-77	1.4	-191	4.3	-201	2.5
2.15	7.244	8.044	7.568	-79	0.8	-54	8.8	-62	7.5	-184	0.5	-198	1.0
2.23	7.432	8.398	7.856			-76	15.9	-87	0.2	-190	#	-201	5.4
2.24	7.449	8.445	7.891							-186	#	-201	#
2.26	7.499	8.531	7.961							-190	4.1	-194	1.8
2.27	7.529	8.570	7.996							-194	1.3	-202	4.8	-169	0.1
2.30	7.594	8.714	8.099							-189	1.0	-201	1.0
2.32	7.655	8.776	8.170	-68	5.0					-189	3.1	-203	1.4
2.33	7.678	8.815	8.205	-52	1.0	-43	0.3	-44	#	-183	1.9	-196	5.6
2.35	7.719	8.916	8.275	-58	0.8	-55	#			-185	7.4	-199	5.9
2.36	7.760	8.941	8.310	-66	0.2	-57	0.0			-186	3.5	-197	1.0
2.39	7.848	9.046	8.414	-66	0.4	-54	0.7	-60	1.5	-191	3.3	-203	1.8
2.41	7.908	9.122	8.484							-186	2.4	-198	3.0
2.42	7.940	9.159	8.520	-68	0.8	-80	0.2	-97	2.0	-191	3.7	-199	6.0	-172	1.0
2.44	7.986	9.242	8.591	-72	1.1	-71	0.6			-187	#
2.45	8.004	9.289	8.625							-186	1.5	-198	0.3
2.47	8.090	9.348	8.695	-80	2.5					-182	8.9	-195	7.5
2.48	8.120	9.386	8.730	-78	0.8	-86	0.8	-104	#	-197	5.5	-208	4.7
2.53	8.280	9.568	8.907	-80	2.1	-74	#			-186	0.8	-196	0.0
2.54	8.310	9.610	8.942							-181	#			-156	0.0
2.56	8.367	9.682	9.011							-183	0.7	-196	1.3
2.57	8.397	9.712	9.046	-75	2.0	-65	2.0	-66	#	-187	5.2	-197	4.6			-125	#
2.59	8.458	9.776	9.114	-77	#	-62	7.4	-74	#	-185	5.1	-197	2.3			-139	0.8
2.60	8.487	9.819	9.149	-76	1.3	-64	0.1			-181	8.0	-190	5.0