Citation:

PANGAEA.993811 (DOI registration in progress)

Name: Plant wax alkanes of lake sediment core TAR2-18-1 from Tarn 2, East Falkland
Published: 2026-04-27
License: https://creativecommons.org/licenses/by/4.0/
Keywords: alkanes; Biomarker; Lake sediment core; Long-chain n-alkanes; Pollen; South Altantic; south westerly wind; Vegetation change; Vegetation composition

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Published: 2026-04-27

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Abstract:

Plant wax alkanes from Tarn 2, Mt. Usborne, East Falkland extracted from tar2-18-1 with piston corer in Spring 2018. Data is plotted by depth of the piston core and age. Plant wax alkanes are reported as carbon chain length, concentration (ug/g of sediment), and stable isotope (hydrogen-dD VSMOW; carbon-d13C VDPB).

Keyword(s):

alkanes; Biomarker; Lake sediment core; Long-chain n-alkanes; Pollen; South Altantic; south westerly wind; Vegetation change; Vegetation composition

Related to:

Spoth-Ascencao, Meghan; Hall, Brenda L; Gill, Jacquelyn; et al. (accepted): A 13,000-year record of the Southern Hemisphere Westerlies inferred from pollen and plant wax isotopes from the South Atlantic. Paleoceanography and Paleoclimatology

Spoth-Ascencao, Meghan; Hall, Brenda L; Lowell, Thomas V; Diefendorf, Aaron F; Corcoran, Megan C; Brickle, Paul (2023): Tracking the southern hemisphere westerlies during and since the last glacial maximum with multiproxy lake records from the Falkland Islands (52 °S). Quaternary Science Reviews, 311, 108135, https://doi.org/10.1016/j.quascirev.2023.108135

Coverage:

Latitude: -51.696367 * Longitude: -58.826867

Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 1.480 m

Event(s):

TAR2-18-1 * Latitude: -51.696367 * Longitude: -58.826867 * Elevation: 600.0 m * Location: Falkland Islands * Method/Device: Piston corer (PC) * Comment: Spring 2018, Tarn 2

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample code/label	Sample label		Spoth-Ascencao, Meghan
2	DEPTH, sediment/rock	Depth sed	m	Spoth-Ascencao, Meghan		Geocode
3	AGE	Age	ka BP	Spoth-Ascencao, Meghan		Geocode
4	n-Alkane C12, per unit sediment mass	C12/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
5	n-Alkane C13, per unit sediment mass	C13/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
6	n-Alkane C14, per unit sediment mass	C14/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
7	n-Alkane C15, per unit sediment mass	C15/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
8	n-Alkane C16, per unit sediment mass	C16/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
9	n-Alkane C17, per unit sediment mass	C17/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
10	n-Alkane C18, per unit sediment mass	C18/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
11	n-Alkane C19, per unit sediment mass	C19/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
12	n-Alkane C20, per unit sediment mass	C20/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
13	n-Alkane C21, per unit sediment mass	C21/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
14	n-Alkane C22, per unit sediment mass	C22/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
15	n-Alkane C23, per unit sediment mass	C23/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
16	n-Alkane C24, per unit sediment mass	C24/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
17	n-Alkane C25, per unit sediment mass	C25/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
18	n-Alkane C26, per unit sediment mass	C26/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
19	n-Alkane C27, per unit sediment mass	C27/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
20	n-Alkane C28, per unit sediment mass	C28/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
21	n-Alkane C29, per unit sediment mass	C29/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
22	n-Alkane C30, per unit sediment mass	C30/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
23	n-Alkane C31, per unit sediment mass	C31/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
24	n-Alkane C32, per unit sediment mass	C32/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
25	n-Alkane C33, per unit sediment mass	C33/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
26	n-Alkane C34, per unit sediment mass	C34/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
27	n-Alkane C35, per unit sediment mass	C35/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
28	n-Alkane C36, per unit sediment mass	C36/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
29	n-Alkane C37, per unit sediment mass	C37/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
30	n-Alkane C38, per unit sediment mass	C38/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
31	n-Alkane C39, per unit sediment mass	C39/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
32	n-Alkane C40, per unit sediment mass	C40/sed	µg/g	Spoth-Ascencao, Meghan	see reference(s)
33	n-Alkane C23, δ13C	C23 δ13C	‰ PDB	Spoth-Ascencao, Meghan	see reference(s)	vs. VPDB
34	n-Alkane C25, δ13C	C25 δ13C	‰ PDB	Spoth-Ascencao, Meghan	see reference(s)	vs. VPDB
35	n-Alkane C27, δ13C	C27 δ13C	‰ PDB	Spoth-Ascencao, Meghan	see reference(s)	vs. VPDB
36	n-Alkane C29, δ13C	C29 δ13C	‰ PDB	Spoth-Ascencao, Meghan	see reference(s)	vs. VPDB
37	n-Alkane C31, δ13C	C31 δ13C	‰ PDB	Spoth-Ascencao, Meghan	see reference(s)	vs. VPDB
38	n-Alkane C33, δ13C	C33 δ13C	‰ PDB	Spoth-Ascencao, Meghan	see reference(s)	vs. VPDB
39	n-Alkane C23, δD	C23 δD	‰ SMOW	Spoth-Ascencao, Meghan	see reference(s)	vs. VSMOW
40	n-Alkane C25, δD	C25 δD	‰ SMOW	Spoth-Ascencao, Meghan	see reference(s)	vs. VSMOW
41	n-Alkane C25, δD, standard deviation	C25 δD std dev	±	Spoth-Ascencao, Meghan	see reference(s)	ISD
42	n-Alkane C27, δD	C27 δD	‰ SMOW	Spoth-Ascencao, Meghan	see reference(s)	vs. VSMOW
43	n-Alkane C27, δD, standard deviation	C27 δD std dev	±	Spoth-Ascencao, Meghan	see reference(s)	ISD
44	n-Alkane C29, δD	C29 δD	‰ SMOW	Spoth-Ascencao, Meghan	see reference(s)	vs. VSMOW
45	n-Alkane C29, δD, standard deviation	C29 δD std dev	±	Spoth-Ascencao, Meghan	see reference(s)	ISD
46	n-Alkane C31, δD	C31 δD	‰ SMOW	Spoth-Ascencao, Meghan	see reference(s)	vs. VSMOW
47	n-Alkane C31, δD, standard deviation	C31 δD std dev	±	Spoth-Ascencao, Meghan	see reference(s)
48	n-Alkane C33, δD	C33 δD	‰ SMOW	Spoth-Ascencao, Meghan	see reference(s)	vs. VSMOW
49	n-Alkane C33, δD, standard deviation	C33 δD std dev	±	Spoth-Ascencao, Meghan	see reference(s)	ISD

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

959 data points

Data

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

1 Sample label	2 Depth sed [m]	3 Age [ka BP]	4 C12/sed [µg/g]	5 C13/sed [µg/g]	6 C14/sed [µg/g]	7 C15/sed [µg/g]	8 C16/sed [µg/g]	9 C17/sed [µg/g]	10 C18/sed [µg/g]	11 C19/sed [µg/g]	12 C20/sed [µg/g]	13 C21/sed [µg/g]	14 C22/sed [µg/g]	15 C23/sed [µg/g]	16 C24/sed [µg/g]	17 C25/sed [µg/g]	18 C26/sed [µg/g]	19 C27/sed [µg/g]	20 C28/sed [µg/g]	21 C29/sed [µg/g]	22 C30/sed [µg/g]	23 C31/sed [µg/g]	24 C32/sed [µg/g]	25 C33/sed [µg/g]	26 C34/sed [µg/g]	27 C35/sed [µg/g]	28 C36/sed [µg/g]	29 C37/sed [µg/g]	33 C23 δ13C [‰ PDB]	34 C25 δ13C [‰ PDB]	35 C27 δ13C [‰ PDB]	36 C29 δ13C [‰ PDB]	37 C31 δ13C [‰ PDB]	38 C33 δ13C [‰ PDB]	39 C23 δD [‰ SMOW]	40 C25 δD [‰ SMOW]	41 C25 δD std dev [±]	42 C27 δD [‰ SMOW]	43 C27 δD std dev [±]	44 C29 δD [‰ SMOW]	45 C29 δD std dev [±]	46 C31 δD [‰ SMOW]	47 C31 δD std dev [±]	48 C33 δD [‰ SMOW]	49 C33 δD std dev [±]
tar2-18-1 T1 0 cm	0.000	2.095	0.02	0.02	0.07	0.05	0.18	0.18	0.13	0.10	0.15	0.50	0.65	2.12	1.41	4.09	1.93	6.12	1.54	8.21	0.81	8.27	0.31	2.21	0.00	0.01	0.00	0.00	-30.9	-31.2	-31.8	-32.2	-31.7	-30.6	-173.9	-184.4		-182.0		-181.6		-179.1		-165.9
tar2-18-1 T1 10 cm	0.100	2.651	0.00	0.00	0.07	0.03	0.20	0.19	0.14	0.00	0.14	0.48	0.61	1.99	1.29	3.86	1.78	5.82	1.48	8.41	0.81	8.85	0.31	2.25	0.06	0.26	0.00	0.00		-31.2	-31.9	-32.1	-31.5	-30.4		-174.1	1.3	-180.5	1.3	-180.9	1.3	-180.0	1.0	-164.0	1.8
tar2-18-1 T1 19 cm	0.190	3.167	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.47	0.64	2.07	1.41	4.18	1.93	6.23	1.67	8.75	0.98	9.58	0.43	2.40	0.00	0.28	0.00	0.00
tar2-18-1 T1 30 cm	0.300	3.717	0.02	0.02	0.10	0.07	0.22	0.19	0.13	0.00	0.08	0.31	0.36	1.28	0.86	2.73	1.24	4.24	1.11	6.24	0.67	6.67	0.27	1.87	0.05	0.22	0.00	0.00	-30.3	-31.0	-31.8	-32.3	-31.9	-31.0		-174.3		-175.8		-180.5		-180.3		-168.4
tar2-18-1 T1 40 cm	0.400	4.218	0.05	0.00	0.21	0.12	0.34	0.29	0.23	0.00	0.22	0.84	0.86	2.81	1.68	5.42	2.22	7.34	1.91	11.52	1.28	14.74	0.55	4.21	0.11	0.55	0.00	0.00	-29.9	-30.6	-31.3	-32.0	-31.7	-31.2		-177.8		-177.0		-181.4		-182.2		-168.4
tar2-18-1 T1 50 cm	0.500	4.721	0.00	0.00	0.05	0.04	0.15	0.18	0.10	0.00	0.10	0.46	0.50	1.60	0.96	3.04	1.32	4.47	1.17	6.81	0.75	8.16	0.30	2.19	0.06	0.25	0.00	0.00	-30.5	-31.0	-31.7	-32.4	-32.1	-31.5		-163.4	2.3	-171.5	1.7	-177.3	0.8	-179.8	0.7	-166.6	1.6
tar2-18-1 T1 61 cm	0.610	5.275	0.00	0.00	0.00	0.00	0.00	0.00	0.03	0.05	0.17	0.68	0.85	2.55	1.63	4.73	1.98	5.94	1.62	10.45	1.40	16.05	0.53	3.11	0.00	0.00	0.00	0.00	-30.3	-30.6	-31.5	-31.9	-31.4	-31.3	-155.2	-175.7		-171.2		-176.5		-180.6		-171.4
tar2-18-1 T1 70 cm	0.700	5.720	0.02	0.02	0.07	0.03	0.07	0.11	0.05	0.00	0.13	0.65	0.67	2.21	1.39	4.30	0.02	5.48	1.48	9.24	1.00	12.65	0.39	3.01	0.00	0.37	0.00	0.04	-30.4	-31.0	-31.8	-32.0	-31.8	-31.5		-184.6	0.3	-178.4	1.3	-180.7	0.5	-179.7	0.3	-168.1	1.2
tar2-18-1 T1 80 cm	0.800	6.149	0.00	0.00	0.05	0.00	0.08	0.09	0.09	0.00	0.20	1.31	0.74	2.48	1.40	4.52	1.60	5.32	1.35	8.69	0.94	11.09	0.38	3.18	0.00	0.46	0.00	0.00	-30.0	-30.8	-31.8	-32.3	-31.8	-31.3		-185.8		-179.4		-180.7		-180.1		-167.1
tar2-18-1 T2 32.5 cm	0.875	6.481	0.00	0.00	0.06	0.05	0.10	0.13	0.12	0.00	0.12	0.48	0.54	1.69	1.17	3.61	1.46	4.29	1.13	6.80	0.81	9.45	0.33	2.43	0.00	0.31	0.00	0.00	-30.1	-30.6	-31.4	-32.0	-31.8	-30.9		-176.8		-174.8		-177.3		-178.1		-164.3
tar2-18-1 T1 90 cm	0.900	6.592	0.06	0.00	0.13	0.04	0.27	0.20	0.17	0.00	0.13	0.41	0.49	1.58	1.09	3.50	1.39	4.17	1.06	6.46	0.75	8.77	0.30	2.38	0.00	0.29	0.05	0.00	-30.1	-30.7	-31.5	-32.2	-31.9	-31.4		-156.2		-172.6		-163.4		-177.0		-165.8
tar2-18-1 T2 42 cm	0.970	7.018	0.00	0.00	0.00	0.00	0.00	0.01	0.03	0.00	0.00	0.06	0.00	0.16	0.09	0.33	0.11	0.39	0.00	0.57	0.06	0.64	0.00	0.12	0.00	0.00	0.00	0.00	-29.1	-29.8	-30.6	-31.7	-31.8	-31.0	-163.7	-159.9		-168.0		-175.1		-180.3		-166.0
tar2-18-1 T2 48 cm	1.030	7.405	0.00	0.00	0.07	0.00	0.09	0.08	0.07	0.00	0.15	0.43	0.38	1.30	0.74	2.66	0.91	3.24	0.72	5.26	0.58	7.51	0.26	2.17	0.05	0.27	0.00	0.00	-28.8	-29.8	-30.8	-31.8	-31.9	-31.1	-158.0	-170.3		-173.0		-180.6		-180.3		-164.1
tar2-18-1 T2 50 cm	1.050	7.559	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.52	1.68	1.90	6.91	4.35	15.54	5.69	19.62	4.42	29.62	3.61	41.26	1.78	11.93	0.00	0.00	0.00	0.00	-28.5	-29.4	-30.3	-31.7	-31.7	-30.9	-150.4	-172.2		-172.4		-179.6		-182.5		-175.5
tar2-18-1 T2 55 cm	1.100	8.406	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.13	0.34	1.25	1.29	4.21	2.86	9.51	3.60	11.82	2.86	18.16	2.32	26.36	1.11	7.98	0.22	1.01	0.00	0.00	-28.3	-29.8	-30.2	-31.6	-32.3	-30.8	-150.0	-174.1		-172.9		-180.0		-183.9		-176.4
tar2-18-1 T2 60 cm	1.150	9.361	0.01	0.01	0.05	0.04	0.17	0.18	0.17	0.00	0.13	0.56	0.50	1.58	1.03	3.30	1.27	4.07	1.05	6.61	0.80	9.27	0.34	2.76	0.06	0.33	0.00	0.00	-28.8	-30.2	-31.1	-32.0	-31.8	-31.1		-178.9		-177.6		-182.0		-181.7		-168.3
tar2-18-1 T2 62 cm	1.170	9.719	0.00	0.02	0.06	0.03	0.07	0.07	0.10	0.00	0.15	0.82	0.69	2.15	1.29	3.87	1.45	4.39	1.20	7.16	0.87	9.42	0.36	2.75	0.00	0.34	0.00	0.00	-28.9	-30.3	-31.1	-32.0	-31.8	-30.7	-171.2	-183.4		-180.6		-183.5		-179.9		-166.3
tar2-18-1 T2 65 cm	1.200	10.257	0.01	0.00	0.04	0.02	0.07	0.06	0.17	0.00	0.15	0.88	0.72	2.31	1.30	4.08	1.47	4.52	1.23	7.41	0.90	9.93	0.38	3.07	0.07	0.40	0.00	0.00	-28.7	-30.1	-31.0	-31.9	-31.8	-30.6	-170.4	-181.9		-181.2		-184.1		-182.1		-170.2
tar2-18-1 T2 70 cm	1.250	10.783	0.00	0.00	0.00	0.00	0.00	0.00	0.02	0.07	0.20	0.82	0.52	2.08	1.03	3.50	1.17	3.97	1.02	7.19	0.84	9.18	0.36	2.64	0.00	0.27	0.00	0.00	-26.8	-29.2	-30.1	-31.5	-31.3	-30.1	-135.8	-164.3		-166.3		-179.9		-179.6		-172.1
tar2-18-1 T2 72 cm	1.270	10.991	0.00	0.00	0.04	0.03	0.08	0.09	0.06	0.00	0.15	0.71	0.43	1.57	0.76	2.44	0.86	2.87	0.78	5.50	0.62	6.69	0.26	1.87	0.05	0.18	0.00	0.00	-27.3	-29.7	-30.6	-31.7	-31.5	-30.2	-123.3	-161.6		-166.4		-181.3		-178.4		-164.2
tar2-18-1 T2 79 cm	1.340	11.730	0.06	0.02	0.09	0.03	0.06	0.04	0.00	0.00	0.07	0.24	0.26	0.71	0.40	1.08	0.45	1.25	0.34	2.37	0.26	3.04	0.10	0.83	0.02	0.08	0.00	0.00	-27.7	-29.6	-30.0	-31.3	-31.1	-29.8	-153.8	-175.8		-170.3		-184.4		-179.4		-166.8
tar2-18-1 T2 86 cm	1.410	12.179	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.08	0.09	0.10	0.23	0.12	0.30	0.12	0.40	0.10	0.70	0.07	0.61	0.03	0.16	0.01	0.02	0.00	0.00	-28.9	-29.6	-29.8	-31.2	-31.1	-30.7	-148.9	-166.3		-169.7		-186.9		-186.2		-175.1
tar2-18-1 T2 93 cm	1.480	12.542	0.00	0.02	0.08	0.03	0.06	0.04	0.00	0.00	0.03	0.07	0.09	0.20	0.12	0.29	0.15	0.43	0.10	0.74	0.06	0.63	0.00	0.13	0.00	0.00	0.00	0.00	-28.8	-29.3	-29.5	-31.2	-31.2	-30.7	-145.0	-158.9		-161.4		-180.2		-178.2		-158.4