Citation:

PANGAEA.915000

Name: Thorium / uranium dating of stalagmite PR-LA-1 (Cueva Larga, Puerto Rico)
Published: 2020-04-21
License: https://creativecommons.org/licenses/by/4.0/
Keywords: speleothem

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Keyword(s):

speleothem

Further details:

Cheng, Hai; Edwards, Ross L; Hoff, John A; Gallup, Christina D; Richards, David A; Asmerom, Yemane (2000): The half-lives of uranium-234 and thorium-230. Chemical Geology, 169(1-2), 17-33, https://doi.org/10.1016/S0009-2541(99)00157-6

Project(s):

Global marine biogeochemical cycles of trace elements and their isotopes (GEOTRACES)

Coverage:

Latitude: 18.317000 * Longitude: -66.800000

Minimum DISTANCE: 0.05 cm * Maximum DISTANCE: 18.68 cm

Event(s):

PR-LA-1 * Latitude: 18.317000 * Longitude: -66.800000 * Elevation: 350.0 m * Recovery: 1.85 m * Location: Cueva Larga, Puerto Rico * Method/Device: Speleothem sample (SPS)

Comment:

Activity ratios were corrected for initial Th assuming an detrital weight ratio 232Th/238U = 0.13 ± 0.04 (corresponding to an activity ratio of the detritus in secular equilibrium of (230Th/232Th)detr = 23.7 ± 7.5), and secular equilibrium of the detritus.

Ages are calculated using the decay constants by Cheng et al. (2000).

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Laboratory code/label	Lab label		Warken, Sophie F
2	Comment	Comment		Warken, Sophie F
3	Sample ID	Sample ID		Warken, Sophie F
4	DISTANCE	Distance	cm	Warken, Sophie F		Geocode – cm from top
5	Uranium-238	238U	mg/kg	Warken, Sophie F	Uranium-thorium isotope dilution measurement by MC-ICPMS
6	Uranium-238, standard deviation	238U std dev	±	Warken, Sophie F	Uranium-thorium isotope dilution measurement by MC-ICPMS	Uncertainty, 2σ- range, not including half-life uncertainties
7	Thorium-232	232Th	µg/kg	Warken, Sophie F	Uranium-thorium isotope dilution measurement by MC-ICPMS
8	Thorium-232, standard deviation	232Th std dev	±	Warken, Sophie F	Uranium-thorium isotope dilution measurement by MC-ICPMS	Uncertainty, 2σ- range, not including half-life uncertainties
9	Thorium-230/Thorium-232 activity ratio	(230Th/232Th)		Warken, Sophie F	Uranium-thorium isotope dilution measurement by MC-ICPMS
10	Thorium-230/Thorium-232 activity ratio, standard deviation	(230Th/232Th) std dev	±	Warken, Sophie F	Uranium-thorium isotope dilution measurement by MC-ICPMS	Uncertainty, 2σ- range, not including half-life uncertainties
11	Uranium-234/Uranium-238 activity ratio	(234U/238U)		Warken, Sophie F	Uranium-thorium isotope dilution measurement by MC-ICPMS
12	Uranium-234/Uranium-238 activity ratio, standard deviation	(234U/238U) std dev	±	Warken, Sophie F	Uranium-thorium isotope dilution measurement by MC-ICPMS	Uncertainty, 2σ- range, not including half-life uncertainties
13	Thorium-230/Uranium-238 activity ratio	(230Th/238U)		Warken, Sophie F	Uranium-thorium isotope dilution measurement by MC-ICPMS
14	Thorium-230/Uranium-238 activity ratio, standard deviation	(230Th/238U) std dev	±	Warken, Sophie F	Uranium-thorium isotope dilution measurement by MC-ICPMS	Uncertainty, 2σ- range, not including half-life uncertainties
15	Uranium-234/Uranium-238 activity ratio (0)	234U/238U(0)		Warken, Sophie F	Uranium-thorium isotope dilution measurement by MC-ICPMS
16	Uranium-234/Uranium-238 activity ratio (0), standard deviation	234U/238U(0) std dev	±	Warken, Sophie F	Uranium-thorium isotope dilution measurement by MC-ICPMS	Uncertainty, 2σ- range, not including half-life uncertainties
17	Age, dated	Age dated	ka	Warken, Sophie F	Age, 230Th/U Thorium-Uranium	Uncorrected
18	Age, dated standard deviation	Age dated std dev	±	Warken, Sophie F	Age, 230Th/U Thorium-Uranium	Uncertainty, 2σ- range, uncorrected
19	Age, dated	Age dated	ka	Warken, Sophie F	Corrected, using the decay constants by Cheng et al. (2000)	Corrected
20	Age, dated standard deviation	Age dated std dev	±	Warken, Sophie F	Corrected, using the decay constants by Cheng et al. (2000)	Uncertainty, 2σ- range, corrected

License:

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

Size:

1289 data points

Data

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

1 Lab label	2 Comment	3 Sample ID	4 Distance [cm] (cm from top)	5 238U [mg/kg] (Uranium-thorium isotope dilut...)	6 238U std dev [±] (Uncertainty, 2σ- range, not i...)	7 232Th [µg/kg] (Uranium-thorium isotope dilut...)	8 232Th std dev [±] (Uncertainty, 2σ- range, not i...)	9 (230Th/232Th) (Uranium-thorium isotope dilut...)	10 (230Th/232Th) std dev [±] (Uncertainty, 2σ- range, not i...)	11 (234U/238U) (Uranium-thorium isotope dilut...)	12 (234U/238U) std dev [±] (Uncertainty, 2σ- range, not i...)	13 (230Th/238U) (Uranium-thorium isotope dilut...)	14 (230Th/238U) std dev [±] (Uncertainty, 2σ- range, not i...)	15 234U/238U(0) (Uranium-thorium isotope dilut...)	16 234U/238U(0) std dev [±] (Uncertainty, 2σ- range, not i...)	17 Age dated [ka] (Uncorrected, Age, 230Th/U Tho...)	18 Age dated std dev [±] (Uncertainty, 2σ- range, uncor...)	19 Age dated [ka] (Corrected, Corrected, using t...)	20 Age dated std dev [±] (Uncertainty, 2σ- range, corre...)
SW111		L1A-0.5	0.05	0.2947	0.0035	0.44680	0.00490	313	3	1.1070	0.0120	0.1468	0.0031	1.1110	0.0120	16.44	0.28	15.28	0.52
SW1		L1A-1.5	0.15	0.2811	0.0017	0.10560	0.00150	1297	19	1.1018	0.0018	0.1573	0.0013	1.1066	0.0019	16.98	0.13	16.70	0.17
SW41		L1A-2.5	0.25	0.1007	0.0006	0.00890	0.00020	18566	363	1.0992	0.0044	0.1632	0.0015	1.1042	0.0046	17.49	0.19	17.47	0.19
SW9		L1A-5.3	0.53	0.3165	0.0021					1.0923	0.0025	0.1654	0.0014	1.0970	0.0026	17.85	0.16	17.85	0.16
SW2		L1A-6.5	0.65	0.3006	0.0016					1.0895	0.0015	0.1754	0.0013	1.0945	0.0016	19.09	0.16	19.09	0.16
SW17		L1A-9.5	0.95	0.3290	0.0019	0.02780	0.00040	6507	93	1.0913	0.0016	0.1792	0.0010	1.0965	0.0017	19.56	0.13	19.49	0.13
SW10		L1A-10.8	1.08	0.2743	0.0019	0.48430	0.00600	330	4	1.0977	0.0043	0.1811	0.0033	1.1024	0.0045	20.73	0.19	19.37	0.58
SW42		L1A-11.8	1.18	0.0927	0.0006	0.03710	0.00050	5289	85	1.0934	0.0046	0.1869	0.0020	1.0989	0.0047	20.44	0.25	20.36	0.26
SW11		L1A-16.1	1.61	0.2954	0.0022	0.04960	0.00240	3439	164	1.0848	0.0047	0.1881	0.0017	1.0899	0.0050	20.81	0.24	20.68	0.23
SW25		L1A-17.5	1.75	0.2589	0.0015	0.08340	0.00110	1811	25	1.0789	0.0024	0.1892	0.0016	1.0835	0.0025	21.17	0.19	20.92	0.21
SW3		L1A-19.5	1.95	0.3896	0.0023	0.70910	0.00750	341	3	1.0781	0.0015	0.1937	0.0032	1.0824	0.0016	22.71	0.14	21.29	0.58
SW33		L1A-20.3	2.03	0.2981	0.0018	0.18640	0.00280	954	16	1.0794	0.0017	0.1919	0.0020	1.0841	0.0018	21.69	0.21	21.20	0.29
SW43		L1A-21.3	2.13	0.1332	0.0008	0.01980	0.00030	9625	161	1.0807	0.0033	0.1919	0.0016	1.0856	0.0035	21.29	0.21	21.24	0.21
SW18		L1A-23.2	2.32	0.3002	0.0016	1.72100	0.01700	123	1	1.0809	0.0017	0.2000	0.0099	1.0839	0.0018	26.04	0.16	21.50	1.90
SW26		L1A-25.2	2.52	0.3036	0.0018	2.02700	0.02000	108	1	1.0805	0.0025	0.2007	0.0116	1.0832	0.0027	26.77	0.17	21.40	2.20
SW4		L1A-26.5	2.65	0.3026	0.0018	0.17940	0.00270	1042	17	1.0772	0.0014	0.1989	0.0021	1.0819	0.0015	22.57	0.24	22.11	0.30
SW12		L1A-31.7	3.17	0.3306	0.0028	0.02080	0.00220	9887	1033	1.0819	0.0063	0.2031	0.0018	1.0872	0.0068	22.64	0.27	22.59	0.26
SW19		L1A-32.5	3.25	0.3075	0.0018	0.04510	0.00060	4315	58	1.0808	0.0016	0.2062	0.0016	1.0861	0.0017	23.11	0.21	22.99	0.20
SW5		L1A-35	3.50	0.3491	0.0022					1.0847	0.0017	0.2100	0.0014	1.0905	0.0017	23.38	0.18	23.38	0.18
SW6		L1A-41	4.10	0.3205	0.0020					1.0883	0.0018	0.2136	0.0012	1.0944	0.0019	23.74	0.16	23.74	0.16
SW13		L1A-47.8	4.78	0.2838	0.0018					1.0832	0.0023	0.2149	0.0020	1.0891	0.0025	24.03	0.26	24.03	0.26
SW14		L1A-49.3	4.93	0.2536	0.0017					1.0801	0.0035	0.2153	0.0019	1.0857	0.0036	24.15	0.26	24.15	0.26
SW20		L1A-50.8	5.08	0.2574	0.0015	0.15180	0.00200	1147	16	1.0789	0.0017	0.2182	0.0020	1.0844	0.0018	24.94	0.22	24.48	0.29
SW15		L1A-54.5	5.45	0.2585	0.0017	0.19330	0.00280	910	13	1.0759	0.0032	0.2188	0.0018	1.0812	0.0033	25.19	0.19	24.61	0.31
SW29		L1B-0.00	5.50	0.2923	0.0032	0.02302	0.00062	8582	239	1.0730	0.0100	0.2207	0.0028	1.0780	0.0110	25.08	0.45	25.02	0.45
SW44		L1B-4.0	5.90	0.3924	0.0024	0.00986	0.00018	18277	343	1.0654	0.0042	0.2235	0.0019	1.0703	0.0045	25.61	0.27	25.58	0.27
SW49		L1B-5.5	6.05	0.2708	0.0023	0.05500	0.00140	3443	102	1.0623	0.0066	0.2279	0.0039	1.0671	0.0071	26.39	0.54	26.23	0.55
SW34		L1B-9.3	6.43	0.3374	0.0020	0.01604	0.00053	14834	503	1.0614	0.0020	0.2303	0.0020	1.0662	0.0021	26.62	0.27	26.59	0.27
SW50		L1B-10.8	6.58	0.3278	0.0026	0.03056	0.00066	7877	193	1.0661	0.0061	0.2398	0.0033	1.0714	0.0067	27.75	0.48	27.68	0.48
SW145		L1B-13.2	6.82	0.3925	0.0023	0.07210	0.00120	4000	68	1.0628	0.0018	0.2395	0.0019	1.0678	0.0019	27.87	0.26	27.72	0.26
SW27		L1B-17.7	7.27	0.4043	0.0024	0.02920	0.00072	10101	264	1.0646	0.0025	0.2383	0.0026	1.0698	0.0026	27.59	0.35	27.53	0.35
SW51		L1B-19.7	7.47	0.3428	0.0038	0.02240	0.00069	11404	368	1.0710	0.0100	0.2435	0.0036	1.0770	0.0110	28.07	0.57	28.01	0.58
SW45		L1B-24.0	7.90	0.1120	0.0007	0.03674	0.00050	7426	105	1.0977	0.0039	0.2566	0.0021	1.1059	0.0041	28.97	0.28	28.88	0.29
SW28		L1B-25.3	8.03	0.2699	0.0017	0.05160	0.00077	4162	65	1.0977	0.0027	0.2593	0.0021	1.1060	0.0030	29.37	0.29	29.22	0.29
SW105		L1C-1.5	8.20	0.4442	0.0030					1.0987	0.0045	0.2582	0.0021	1.1071	0.0048	29.07	0.31	29.07	0.31
SW35		L1C-2.7	8.32	0.4708	0.0027	0.00377	0.00046	98840	12050	1.0995	0.0018	0.2591	0.0020	1.1081	0.0020	29.17	0.27	29.16	0.26
SW106		L1C-6.2	8.67	0.3363	0.0032					1.1000	0.0084	0.2616	0.0026	1.1087	0.0089	29.47	0.42	29.47	0.42
SW146		L1C-8.9	8.94	0.3752	0.0021	0.05437	0.00072	5552	77	1.1007	0.0016	0.2625	0.0019	1.1094	0.0017	29.66	0.25	29.55	0.26
SW46		L1C-10.6	9.11	0.0941	0.0006	0.00556	0.00014	54828	1472	1.1014	0.0050	0.2637	0.0027	1.1103	0.0054	29.70	0.39	29.69	0.38
SW52		L1C-11.7	9.22	0.3532	0.0037	0.00097	0.00029	292363	85792	1.1019	0.0099	0.2640	0.0032	1.1110	0.0110	29.72	0.52	29.71	0.52
SW147		L1C-14.2	9.47	0.3467	0.0020	0.03649	0.00056	7670	123	1.0973	0.0017	0.2636	0.0021	1.1058	0.0018	29.88	0.27	29.80	0.27
SW107		L1C-16.3	9.68	0.3073	0.0030	0.00140	0.00110	175481	137687	1.0930	0.0088	0.2682	0.0029	1.1014	0.0096	30.56	0.48	30.55	0.49
SW30		L1C-19.9	10.04	0.3244	0.0022	0.00703	0.00030	37507	1603	1.0915	0.0040	0.2657	0.0025	1.0997	0.0042	30.29	0.35	30.27	0.35
SW47		L1C-22.7	10.32	0.2007	0.0013	0.01040	0.00017	27485	464	1.0860	0.0032	0.2750	0.0020	1.0941	0.0035	31.71	0.29	31.69	0.28
SW108		L1C-24.3	10.48	0.3114	0.0037	0.01260	0.00140	20893	2296	1.0850	0.0110	0.2759	0.0034	1.0930	0.0120	31.88	0.59	31.85	0.59
SW 36		L1C-26.1	10.66	0.3411	0.0020					1.0706	0.0018	0.2819	0.0026	1.0776	0.0020	33.18	0.36	33.18	0.36
SW109		L1C-28.3	10.88	0.3370	0.0022					1.0687	0.0040	0.2839	0.0024	1.0756	0.0043	33.52	0.36	33.52	0.36
SW148*	not used to calculate the age model	L1C-33.4	11.39	0.3596	0.0020	0.07142	0.00086	4501	56	1.0510	0.0017	0.2916	0.0020	1.0563	0.0018	35.44	0.30	35.28	0.30
SW110*	not used to calculate the age model	L1C-35.5	11.60	0.3140	0.0036	0.33730	0.00390	836	10	1.0494	0.0108	0.2889	0.0039	1.0540	0.0120	35.71	0.67	34.85	0.79
SW149*	not used to calculate the age model	L1C-37.0	11.75	0.3483	0.0020	0.07840	0.00090	4030	52	1.0505	0.0020	0.2956	0.0025	1.0558	0.0021	36.06	0.37	35.88	0.37
SW31		L1C-38.5	11.90	0.3637	0.0025	0.01813	0.00040	17384	418	1.0541	0.0044	0.2833	0.0033	1.0596	0.0048	34.04	0.49	34.00	0.50
SW113		L1D-0.0	12.06	0.3443	0.0019					1.0469	0.0015	0.2758	0.0037	1.0515	0.0017	33.25	0.54	33.25	0.54
SW129*	not used to calculate the age model	L1D-3.2	12.38	0.2682	0.0016	0.20610	0.00250	1440	19	1.0719	0.0017	0.3590	0.0031	1.0811	0.0018	44.72	0.43	44.12	0.55
SW114		L1D-7.4	12.80	0.3484	0.0020	0.00160	0.00093	190315	110448	1.0448	0.0016	0.2850	0.0040	1.0494	0.0018	34.64	0.57	34.63	0.57
SW130*	not used to calculate the age model	L1D-10.2	13.08	0.1967	0.0011	1.45500	0.01500	168	2	1.0808	0.0022	0.3776	0.0136	1.0891	0.0025	51.47	0.40	45.56	3.55
SW115		L1D-13.0	13.36	0.3398	0.0019	0.03010	0.00110	9937	382	1.0529	0.0017	0.2873	0.0034	1.0583	0.0019	34.69	0.48	34.62	0.49
SW131*	not used to calculate the age model	L1D-17.1	13.77	0.2364	0.0014	1.02900	0.01000	276	3	1.0711	0.0020	0.3757	0.0080	1.0796	0.0022	49.71	0.34	46.20	2.10
SW132*	not used to calculate the age model	L1D-18.3	13.89	0.2265	0.0013	0.05063	0.00088	4789	86	1.0719	0.0017	0.3492	0.0027	1.0810	0.0019	42.90	0.41	42.73	0.43
SW116		L1D-23.7	14.43	0.3783	0.0022					1.0770	0.0018	0.3003	0.0028	1.0852	0.0019	35.48	0.40	35.48	0.40
SW125		L1E-1.2	14.62	0.2887	0.0016	0.01636	0.00052	18345	560	1.0953	0.0016	0.3485	0.0022	1.1071	0.0017	41.52	0.32	41.48	0.33
SW133		L1E-5.9	15.09	0.2025	0.0012	0.00910	0.00042	23611	1084	1.0952	0.0016	0.3468	0.0023	1.1069	0.0017	41.28	0.33	41.24	0.33
SW134		L1E-10.9	15.59	0.2961	0.0017	0.03165	0.00060	10140	200	1.0778	0.0018	0.3541	0.0030	1.0878	0.0021	43.25	0.45	43.17	0.45
SW126		L1E-11.9	15.69	0.3274	0.0019	0.03503	0.00066	10026	194	1.0778	0.0018	0.3543	0.0030	1.0879	0.0020	43.27	0.46	43.19	0.45
SW127		L1E-14.0	15.90	0.3358	0.0019	0.44330	0.00600	829	12	1.0796	0.0017	0.3528	0.0036	1.0894	0.0019	43.74	0.43	42.71	0.70
SW124		L1E-19.2	16.42	0.3346	0.0019	0.07760	0.00130	4608	77	1.0719	0.0017	0.3504	0.0026	1.0811	0.0019	43.08	0.41	42.90	0.41
SW135		L1Eb-0.7	16.68	0.3227	0.0018	0.42640	0.00580	829	12	1.0796	0.0017	0.3528	0.0036	1.0894	0.0019	43.75	0.41	42.72	0.70
SW117*	not used to calculate the age model	L1Eb-2.2	16.83	0.3328	0.0019	0.04790	0.00150	7102	240	1.0709	0.0016	0.3334	0.0047	1.0794	0.0017	40.56	0.69	40.44	0.69
SW121		L1Eb-4.1	17.02	0.2882	0.0016	0.22220	0.00260	1437	19	1.0719	0.0017	0.3593	0.0031	1.0812	0.0019	44.77	0.44	44.16	0.55
SW150		L1Eb-8.2	17.43	0.2950	0.0023	0.98550	0.00990	333	4	1.0679	0.0060	0.3502	0.0067	1.0756	0.0068	45.31	0.58	42.70	1.60
SW122		L1Eb-10.1	17.62	0.2493	0.0014	1.84500	0.01900	168	2	1.0808	0.0022	0.3780	0.0140	1.0891	0.0025	51.54	0.40	45.60	3.50
SW123		L1Eb11.1	17.72	0.2385	0.0014	1.03800	0.01100	276	3	1.0711	0.0020	0.3757	0.0080	1.0796	0.0022	49.70	0.34	46.20	2.10
SW151*	not used to calculate the age model	L1Eb-12.5	17.86	0.2475	0.0015	0.17120	0.00230	1719	26	1.0696	0.0023	0.3861	0.0039	1.0796	0.0026	48.99	0.57	48.45	0.67
SW118		L1Eb-15.2	18.13	0.2816	0.0016	0.19370	0.00270	1643	28	1.0700	0.0016	0.3669	0.0043	1.0793	0.0018	45.98	0.65	45.44	0.72
SW119		L1Eb-20.7	18.68	0.3081	0.0017					1.0724	0.0017	0.3694	0.0042	1.0825	0.0019	45.78	0.64	45.78	0.64