Citation:

2015GL064048

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Source:

Table of speleothem records from two caves located in central-eastern and northeastern Brazil in xlsx-format

Project(s):

Center for Marine Environmental Sciences (MARUM)

Coverage:

Median Latitude: -14.382995 * Median Longitude: -42.814480 * South-bound Latitude: -16.147770 * West-bound Longitude: -44.610550 * North-bound Latitude: -12.618220 * East-bound Longitude: -41.018410

Event(s):

LSF3 * Latitude: -16.147770 * Longitude: -44.610550 * Location: Central-eastern Brazil * Method/Device: Speleothem sample (SPS) * Comment: Lapa Sem Fim cave

LSF16 * Latitude: -16.147770 * Longitude: -44.610550 * Location: Central-eastern Brazil * Method/Device: Speleothem sample (SPS) * Comment: Lapa Sem Fim cave

PX5 * Latitude: -12.618220 * Longitude: -41.018410 * Location: Southern border of northeastern Brazil * Comment: Paixão cave

Comment:

d234U = ([234U/238U]activity - 1)x1000.

d234Uinitial was calculated based on 230Th age (T), i.e., d234Uinitial = d234Umeasured x e**l234xT.

Corrected 230Th ages assume the initial 230Th/232Th atomic ratio of 4.4 ±2.2 x10-6. Those are the values for a material at secular equilibrium, with the bulk earth 232Th/238U value of 3.8. The errors are arbitrarily assumed to be 50%.

B.P. stands for "Before Present" where the "Present" is defined as the year 2000 A.D.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Stríkis, Nicolás Misailidis
2	Sample code/label	Sample label		Stríkis, Nicolás Misailidis
3	Sample comment	Sample comment		Stríkis, Nicolás Misailidis
4	Uranium-238	238U	mg/kg	Stríkis, Nicolás Misailidis
5	Uranium-238, standard deviation	238U std dev	±	Stríkis, Nicolás Misailidis
6	Thorium-232	232Th	µg/kg	Stríkis, Nicolás Misailidis
7	Thorium-232, standard deviation	232Th std dev	±	Stríkis, Nicolás Misailidis
8	Thorium-230/Thorium-232 atomic ratio	230Th/232Th atom		Stríkis, Nicolás Misailidis
9	Thorium-230/Thorium-232 atomic ratio, standard deviation	230Th/232Th atom std dev	±	Stríkis, Nicolás Misailidis
10	δ234 Uranium	δ234U	‰	Stríkis, Nicolás Misailidis	Measured
11	δ234 Uranium, standard deviation	δ234U std dev	±	Stríkis, Nicolás Misailidis	Measured
12	Thorium-230/Uranium-238 activity ratio	(230Th/238U)		Stríkis, Nicolás Misailidis
13	Thorium-230/Uranium-238 activity ratio, standard deviation	(230Th/238U) std dev	±	Stríkis, Nicolás Misailidis
14	Age, dated	Age dated	ka	Stríkis, Nicolás Misailidis	Age, 230Thorium	uncorrected
15	Age, dated standard deviation	Age dated std dev	±	Stríkis, Nicolás Misailidis		uncorrected, 2 Sigma error
16	δ234 Uranium	δ234U	‰	Stríkis, Nicolás Misailidis		Initial, corrected
17	δ234 Uranium, standard deviation	δ234U std dev	±	Stríkis, Nicolás Misailidis		corrected
18	Age, dated	Age dated	ka BP	Stríkis, Nicolás Misailidis	Age, 230Thorium	corrected, BP=2000 AD
19	Age, dated standard deviation	Age dated std dev	±	Stríkis, Nicolás Misailidis		corrected, 2 Sigma erro, BP=2000 AD

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

488 data points

Data

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

1 Event	2 Sample label	3 Sample comment	4 238U [mg/kg]	5 238U std dev [±]	6 232Th [µg/kg]	7 232Th std dev [±]	8 230Th/232Th atom	9 230Th/232Th atom std dev [±]	10 δ234U [‰] (Measured)	11 δ234U std dev [±] (Measured)	12 (230Th/238U)	13 (230Th/238U) std dev [±]	14 Age dated [ka] (uncorrected, Age, 230Thorium)	15 Age dated std dev [±] (uncorrected, 2 Sigma error)	16 δ234U [‰] (Initial, corrected)	17 δ234U std dev [±] (corrected)	18 Age dated [ka BP] (corrected, BP=2000 AD, Age, 2...)	19 Age dated std dev [±] (corrected, 2 Sigma erro, BP=2...)
LSF16	LSF16-1	LSF16 - Stalagmite	0.062	0.0001	0.136	0.0030	0.002506	0.000051	1668	3.30	0.3355	0.0009	14.457	0.0450	1738	3	14.423	0.048
LSF16	LSF 16 2	LSF16 - Stalagmite	0.073	0.0001	0.045	0.0010	0.009167	0.000198	1680	2.40	0.3391	0.0007	14.550	0.0330	1751	3	14.533	0.033
LSF16	LSF16-3	LSF16 - Stalagmite	0.054	0.0001	0.015	0.0000	0.020349	0.000693	1573	2.70	0.3299	0.0010	14.765	0.0500	1640	3	14.752	0.050
LSF16	LSF16-4	LSF16 - Stalagmite	0.052	0.0000	0.048	0.0010	0.006009	0.000129	1570	2.40	0.3332	0.0008	14.939	0.0410	1638	3	14.919	0.041
LSF16	LSF16-5	LSF16 - Stalagmite	0.074	0.0001	0.354	0.0070	0.001184	0.000024	1614	2.60	0.3454	0.0012	15.243	0.0580	1684	3	15.181	0.068
LSF16	LSF16-7	LSF16 - Stalagmite	0.066	0.0001	0.060	0.0010	0.006580	0.000154	1646	2.80	0.3612	0.0013	15.768	0.0640	1721	3	15.748	0.064
LSF16	LSF16-8	LSF16 - Stalagmite	0.062	0.0001	0.077	0.0020	0.005090	0.000111	1704	4.20	0.3802	0.0016	16.272	0.0790	1784	4	16.249	0.079
LSF16	LSF16-9	LSF16 - Stalagmite	0.076	0.0001	0.984	0.0200	0.000497	0.000010	1685	3.00	0.3889	0.0010	16.795	0.0500	1766	3	16.649	0.108
LSF16	LSF16-10	LSF16 - Stalagmite	0.034	0.0000	0.065	0.0010	0.003453	0.000073	1722	3.40	0.3969	0.0011	16.909	0.0540	1807	4	16.880	0.056
LSF16	LSF16-11	LSF16 - Stalagmite	0.085	0.0001	0.393	0.0080	0.001442	0.000029	1715	3.10	0.4021	0.0011	17.194	0.0540	1800	3	17.136	0.063
LSF16	LSF 16 12	LSF16 - Stalagmite	0.125	0.0001	0.220	0.0040	0.003789	0.000077	1719	2.40	0.4053	0.0008	17.318	0.0400	1805	3	17.290	0.042
LSF16	LSF16-13	LSF16 - Stalagmite	0.076	0.0001	0.725	0.0150	0.000731	0.000015	1701	2.30	0.4246	0.0010	18.328	0.0500	1791	2	18.218	0.086
LSF3	LSF3-A		0.062	0.0002	0.256	0.0020	0.001626	0.000015	1712	7.60	0.4056	0.0028	17.398	0.1390	1798	8	17.346	0.141
LSF3	LSF3-B		0.085	0.0003	0.158	0.0010	0.003758	0.000041	1727	8.60	0.4226	0.0028	18.075	0.1410	1817	9	18.047	0.141
LSF3	LSF3-128		0.076	0.0001	0.759	0.0150	0.000704	0.000014	1714	4.10	0.4284	0.0010	18.409	0.0560	1804	4	18.294	0.092
LSF3	LSF3-188		0.070	0.0001	0.139	0.0030	0.003748	0.000077	1730	4.10	0.4522	0.0012	19.385	0.0620	1827	4	19.354	0.064
PX5	PX5-10		0.193	0.0000	0.666	0.0030	0.001251	0.000009	1480	5.00	0.2624	0.0015	12.051	0.0770	1531	5	12.003	0.079
PX5	PX5-11		0.145	0.0000	0.994	0.0040	0.000768	0.000006	1458	7.00	0.3192	0.0024	14.954	0.1300	1521	8	14.867	0.136
PX7	PX7-1		1.619	0.0050	2.292	0.0050	0.005501	0.000018	2608	5.00	0.4727	0.0020	15.052	0.0660	2721	5	15.033	0.066
PX7	PX 7-A		1.425	0.0028	2.090	0.0420	0.005548	0.000112	2540	4.00	0.4935	0.0010	16.094	0.0500	2658	4	16.074	0.051
PX7	PX 7-B		1.524	0.0038	0.397	0.0080	0.034301	0.000698	2837	5.00	0.5423	0.0020	16.321	0.0630	2970	5	16.311	0.063
PX7	PX7-4		1.196	0.0040	0.768	0.0020	0.013741	0.000048	2733	5.00	0.5354	0.0020	16.563	0.0720	2864	5	16.550	0.072
PX7	PX7-5		1.738	0.0057	0.239	0.0048	0.062721	0.001282	2643	5.25	0.5245	0.0023	16.649	0.0817	16647	82	16.639	0.082
PX7	PX 7-C		1.628	0.0040	1.455	0.0290	0.010381	0.000210	2886	4.00	0.5627	0.0020	16.743	0.0610	3026	5	16.728	0.061
PX7	PX 7-D		1.645	0.0071	0.133	0.0030	0.112000	0.002377	2597	8.00	0.5477	0.0030	17.669	0.1160	2730	8	17.660	0.116
PX7	PX 7 E		0.732	0.0015	0.095	0.0020	0.069370	0.001418	2601	5.00	0.5487	0.0020	17.686	0.0600	2734	5	17.677	0.060
PX7	PX7-8		2.332	0.0130	0.258	0.0020	0.080857	0.000501	2496	10.00	0.5419	0.0030	18.038	0.1300	2627	11	18.029	0.130
PX7	PX7-9		2.082	0.0070	0.220	0.0010	0.104000	0.000661	3048	5.00	0.6673	0.0030	19.202	0.0930	3218	6	19.194	0.093