Citation:

j.epsl.2008.04.036

Name: (Table 1) Trace element concentrations and Nd and Pb isotope ratios of sediment samples from Barbados Island
Published: 2008
License: https://creativecommons.org/licenses/by/3.0/

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Coverage:

Median Latitude: 13.239157 * Median Longitude: -59.539879 * South-bound Latitude: 13.183300 * West-bound Longitude: -59.575000 * North-bound Latitude: 13.298300 * East-bound Longitude: -59.471700

Comment:

Nd isotope ratios are relative to the value recommended by Chauvel and Blichert-Toft (2001, doi:10.1016/S0012-821X(01)00379-X) for the Rennes Nd standard (143Nd/144Nd = 0.511961, which corresponds to a La Jolla value of 0.511856). Uncertainties reported on the Nd isotope ratios are in-run errors (2 sigma), where sigma is the standard deviation and n the number of measured 143Nd/144Nd ratios, generally 60). The Rennes Nd standard was run every second sample and its reproducibility (2sigma) calculated on each analyses session (~20 analyses) is typically 30 ppm. Reproducibility calculated using complete duplicate analyses of 7 samples is 1.2 * 10**-5 (2 sigma) on the measured 143Nd/144Nd ratio (25 ppm) and is better than the average in-run errors. Pb isotope ratios are relative to NBS 981 values of 206Pb/204Pb = 16.9405, 207Pb/204Pb = 15.4963 and 208Pb/204Pb = 36.7219 (Galer and Abouchami, 1998). The NBS 981 standard was run every second sample and its reproducibility (2 sigma) calculated on the entire period of analyses is 150, 180 and 200 ppm for 206Pb/204Pb, 207Pb/204Pb and 208Pb/204Pb ratios respectively (106 analysis). Reproducibility calculated using complete duplicate analyses of 8 samples, excluding the 4 duplicates of black shales (Site 144 - Unit 3), is 0.007 (370 ppm), 0.002 (130 pm) and 0.011 (300 ppm) for 206Pb/204Pb, 207Pb/204Pb and 208Pb/204Pb ratios respectively (2 sigma). The reproducibility of the black shale duplicates is not as good probably because of the strong heterogeneities of these samples.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	LATITUDE	Latitude				Geocode
2	LONGITUDE	Longitude				Geocode
3	Sample code/label	Sample label		Carpentier, Marion
4	Formation	Formation		Carpentier, Marion
5	Sample comment	Sample comment		Carpentier, Marion		DR = duplicate run
6	Neodymium	Nd	mg/kg	Carpentier, Marion	Inductively coupled plasma - mass spectrometry (ICP-MS)
7	Samarium	Sm	mg/kg	Carpentier, Marion	Inductively coupled plasma - mass spectrometry (ICP-MS)
8	Lead	Pb	mg/kg	Carpentier, Marion	Inductively coupled plasma - mass spectrometry (ICP-MS)
9	Thorium	Th	mg/kg	Carpentier, Marion	Inductively coupled plasma - mass spectrometry (ICP-MS)
10	Uranium	U	mg/kg	Carpentier, Marion	Inductively coupled plasma - mass spectrometry (ICP-MS)
11	Neodymium-143/Neodymium-144 ratio	143Nd/144Nd		Carpentier, Marion	Anion resin technique (Manhès et al. 1984)
12	Neodymium-143/Neodymium-144 ratio, error	143Nd/144Nd e	±	Carpentier, Marion	Anion resin technique (Manhès et al. 1984)	2 sigma
13	Lead-206/Lead-204 ratio	206Pb/204Pb		Carpentier, Marion	Anion resin technique (Manhès et al. 1984)
14	Lead-206/Lead-204 ratio, error	206Pb/204Pb e	±	Carpentier, Marion	Anion resin technique (Manhès et al. 1984)	2 sigma
15	Lead-207/Lead-204 ratio	207Pb/204Pb		Carpentier, Marion	Anion resin technique (Manhès et al. 1984)
16	Lead-207/Lead-204 ratio, error	207Pb/204Pb e	±	Carpentier, Marion	Anion resin technique (Manhès et al. 1984)	2 sigma
17	Lead-208/Lead-204 ratio	208Pb/204Pb		Carpentier, Marion	Anion resin technique (Manhès et al. 1984)
18	Lead-208/Lead-204 ratio, error	208Pb/204Pb e	±	Carpentier, Marion	Anion resin technique (Manhès et al. 1984)	2 sigma

License:

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

Size:

186 data points

Data

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

1 Latitude	2 Longitude	3 Sample label	4 Formation	5 Sample comment	6 Nd [mg/kg]	7 Sm [mg/kg]	8 Pb [mg/kg]	9 Th [mg/kg]	10 U [mg/kg]	11 143Nd/144Nd	12 143Nd/144Nd e [±]	13 206Pb/204Pb	14 206Pb/204Pb e [±]	15 207Pb/204Pb	16 207Pb/204Pb e [±]	17 208Pb/204Pb	18 208Pb/204Pb e [±]
13.1833	-59.4717	B-1	Oceanic Fm		11.00	3.41	5.30	2.01	2.100			19.5329	0.0016	15.6975	0.0011	38.842	0.003
13.1833	-59.4717	B-2	Oceanic Fm		13.50	3.97	5.52	3.10	2.870	0.513045	0.000015	19.6336	0.0012	15.7039	0.0014	38.855	0.003
13.1833	-59.4717	B-4	Oceanic Fm		19.00	4.18	8.57	5.38	1.550	0.512387	0.000019	19.3442	0.0012	15.7274	0.0012	39.161	0.004
13.2983	-59.5750	B-7	Oceanic Fm		7.65	1.68	2.96	2.07	0.456	0.512240	0.000019	19.2561	0.0030	15.7290	0.0026	39.141	0.007
13.2433	-59.5533	B-6	Upper Scotland Fm		17.30	3.58	7.82	5.56	1.690	0.512089	0.000016	19.5156	0.0011	15.7444	0.0010	39.320	0.003
13.2367	-59.5433	B-10b	Upper Scotland Fm		77.90	18.20	9.30	7.86	3.590	0.512080	0.000021	20.7433	0.0017	15.8790	0.0014	40.037	0.004
13.2367	-59.5433	B-10b		DR						0.512111	0.000010
13.2367	-59.5433	B-10c	Upper Scotland Fm		29.60	5.21	14.00	12.20	2.850	0.512014	0.000010	19.8778	0.0012	15.7930	0.0011	39.710	0.003
13.2367	-59.5433	B-10c		DR						0.511998	0.000011
13.2433	-59.5483	B-11	Upper Scotland Fm		29.60	5.82	18.80	12.60	3.610	0.512041	0.000019	19.9832	0.0015	15.8015	0.0013	39.643	0.004
13.2750	-59.5750	B-8c	Lower Scotland Fm		23.60	4.75	13.30	7.74	2.570	0.512127	0.000021	19.5224	0.0013	15.7420	0.0009	39.348	0.003
13.2750	-59.5750	B-8d	Lower Scotland Fm		32.50	6.10	18.90	13.50	3.160	0.512091	0.000016	19.6153	0.0009	15.7587	0.0010	39.403	0.003
13.2583	-59.5717	B-12a	Lower Scotland Fm		30.10	5.71	21.00	12.50	2.530	0.512217	0.000014	19.3910	0.0017	15.7353	0.0012	39.301	0.003
13.2583	-59.5717	B-12b	Lower Scotland Fm		29.40	5.64	20.10	13.10	3.890	0.512174	0.000018	19.4630	0.0013	15.7404	0.0011	39.347	0.003