Citation:

S0016-7037(03)00128-5

Name: (Table 2) U and Th isotopic compositions of authigenic carbonates, bottom- and pore water and 230Th/234U ages of authigenic carbonates
Published: 2003
License: https://creativecommons.org/licenses/by/3.0/

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Related to:

Teichert, Barbara M A; Eisenhauer, Anton; Bohrmann, Gerhard; Haase-Schramm, Alexandra; Bock, Barbara; Linke, Peter (2004): Erratum to "U/Th Systematics and ages of authigenic carbonates from Hydrate Ridge, Cascadia Margin: Recorders of fluid flow variations" [Geochimica et Cosmochimica Acta 67(20), 3845-3857]. Geochimica et Cosmochimica Acta, 68(10), 2401-2403, https://doi.org/10.1016/j.gca.2004.01.001

Coverage:

Median Latitude: 44.568167 * Median Longitude: -125.128709 * South-bound Latitude: 44.448233 * West-bound Longitude: -125.153000 * North-bound Latitude: 44.674333 * East-bound Longitude: -125.030317

Date/Time Start: 1996-06-01T21:58:00 * Date/Time End: 2000-08-09T00:00:00

Minimum Elevation: -922.2 m * Maximum Elevation: -577.0 m

Event(s):

3424-4-A * Latitude: 44.568330 * Longitude: -125.152830 * Elevation: -812.0 m * Campaign: * Basis: * Method/Device: Manipulator arm (ROV_MA)

3428-6-A * Latitude: 44.568167 * Longitude: -125.150667 * Elevation: -774.0 m * Campaign: * Basis: * Method/Device: Manipulator arm (ROV_MA)

3429-3-A * Latitude: 44.568333 * Longitude: -125.152833 * Elevation: -772.0 m * Campaign: * Basis: * Method/Device: Manipulator arm (ROV_MA)

Comment:

Notes: All given statistical errors are two standard deviations of the mean (2Sigma). The used decay constants are: Lamda234U = 2.8262 x 10**-6 a**-1 (Cheng et al., 2000b); Lamda238U = 1.55125 x 10**-10 a**-1 (Jaffey et al., 1971); Lamda230Th = 9.158 x 10**-6 a**-1 (Cheng et al., 2000b). Corrections for U and Th chemistry blanks are negligible. Column 2: Subsamples of one carbonate sample are represented by numbers following letters. Samples labeled 'a' and 'b' are different aliquots of the same sample before dissolution. Column 11: The measured 234U/238U activity ratios (delta234U(0)) are presented as deviation permil from the equilibrium value, delta234U(0) = {(234U/238U) x (lamda234/lamda238) - 1} x 1000 (Edwards et al., 1987). Column 13: The decay-corrected 234U/238U activity ratios (delta234U(T)) are calculated from the Th corrected ages (column 10) delta234U(T) = delta234U(0) x e**(lamda234*t) (Edwards et al., 1987). Column 17: Maximum ages are calculated using the equation: (230Th/238U) = 1 - e**(lamda230*t) + [delta234U(0)] - 0.001 x [lamda230/(230Th - lamda234)] x [1 - e((lamda234 - lamda230)*t)]. Column 19: Best age estimate corrected for the effect of detrital Th. The uncertainty on the age correction is deduced from an uncertainty of +-50% on the 230Th/232Th activity ratio of 1.92.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Sample code/label	Sample label		Teichert, Barbara M A
3	Comment	Comment		Teichert, Barbara M A
4	Location type	Loc type		Teichert, Barbara M A	Mass spectrometer Finnigan MAT 262 RPQ Plus
5	Uranium-238	238U	mg/kg	Teichert, Barbara M A
6	Uranium-238, standard deviation	238U std dev	±	Teichert, Barbara M A	Mass spectrometer Finnigan MAT 262 RPQ Plus
7	Thorium-230	230Th	ng/kg	Teichert, Barbara M A
8	Thorium-230, standard deviation	230Th std dev	±	Teichert, Barbara M A
9	Thorium-230/Thorium-232 activity ratio	(230Th/232Th)		Teichert, Barbara M A	Mass spectrometer Finnigan MAT 262 RPQ Plus
10	Thorium-230/Thorium-232 activity ratio, standard deviation	(230Th/232Th) std dev	±	Teichert, Barbara M A
11	δ234 Uranium (0)	δ234U (0)	‰	Teichert, Barbara M A	Mass spectrometer Finnigan MAT 262 RPQ Plus	d234U(0)
12	δ234 Uranium, standard deviation	δ234U std dev	±	Teichert, Barbara M A
13	δ234 Uranium	δ234U	‰	Teichert, Barbara M A	Mass spectrometer Finnigan MAT 262 RPQ Plus	d234U(T)
14	δ234 Uranium, standard deviation	δ234U std dev	±	Teichert, Barbara M A
15	Thorium-230/Uranium-234 activity ratio	(230Th/234U)		Teichert, Barbara M A
16	Thorium-230/Uranium-234 activity ratio, standard deviation	(230Th/234U) std dev	±	Teichert, Barbara M A
17	Age, dated	Age dated	ka	Teichert, Barbara M A	Calculated
18	Age, dated standard deviation	Age dated std dev	±	Teichert, Barbara M A
19	Age, dated	Age dated	ka	Teichert, Barbara M A	Calculated	Th corr.
20	Age, dated standard deviation	Age dated std dev	±	Teichert, Barbara M A

License:

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

Size:

534 data points

Data

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

1 Event	2 Sample label	3 Comment	4 Loc type (Mass spectrometer Finnigan MA...)	5 238U [mg/kg]	6 238U std dev [±] (Mass spectrometer Finnigan MA...)	7 230Th [ng/kg]	8 230Th std dev [±]	9 (230Th/232Th) (Mass spectrometer Finnigan MA...)	10 (230Th/232Th) std dev [±]	11 δ234U (0) [‰] (d234U(0), Mass spectrometer F...)	12 δ234U std dev [±]	13 δ234U [‰] (d234U(T), Mass spectrometer F...)	14 δ234U std dev [±]	15 (230Th/234U)	16 (230Th/234U) std dev [±]	17 Age dated [ka] (Calculated)	18 Age dated std dev [±]	19 Age dated [ka] (Th corr., Calculated)	20 Age dated std dev [±]
SO143_21-2	21-2-B-1		SHR	1.1406	0.0009	0.390	0.030	5.500	0.400	214	5	215	5	0.0170	0.0010	1.900	0.3	1.3	0.4
SO143_21-2	21-2-B-2		SHR	1.1561	0.0005	0.341	0.005	7.600	0.100	166	4	167	4	0.0155	0.0002	1.300	0.2	1.3	0.2
SO143_55-5	55-5-3		SHR	1.3770	0.0010	0.630	0.020	2.800	0.100	164	4	164	4	0.0240	0.0006	8.009	0.9	0.8	0.9
SO143_56-1	56-1-C-2		SHR	1.4907	0.0008	1.010	0.030	89.800	3.200	173	4	175	4	0.0320	0.0010	3.500	0.3	3.4	0.3
SO143_56-1	56-1-C-1		SHR	0.3451	0.0004	0.140	0.020	18.300	0.700	315	5	317	5	0.0190	0.0030	2.000	0.7	1.8	0.7
SO143_56-1	56-1-C-5		SHR	1.8120	0.0010	1.530	0.030	14.700	0.300	178	4	180	4	0.0440	0.0010	4.900	0.2	4.3	0.4
SO143_56-1	56-1-H-1		SHR	1.8850	0.0010	2.010	0.030	8.100	0.100	187	4	189	4	0.0550	0.0008	4.800	0.7	4.8	0.7
SO143_56-1	56-1-H-2		SHR	1.6000	0.0030	2.160	0.050	9.700	0.200	175	8	179	8	0.0700	0.0020	7.800	0.4	6.4	0.8
SO143_222	222-C-1		SHR	0.8159	0.0005	0.300	0.008	6.000	0.200	207	2	208	2	0.0186	0.0005	1.400	0.3	1.4	0.3
SO148/2_571-3	571-3-3		SHR	2.5810	0.0010	0.590	0.030	6.200	0.300	170	3	171	3	0.0120	0.0005	8.003	0.3	0.8	0.3
3428-6-A	3428-6-A-1		Pinnacle/SHR	4.5690	0.0020	8.200	0.200	1076.000	31.000	153	3	158	3	0.0950	0.0030	10.800	0.6	10.9	0.6
3424-4-A	3424-4-A-2		Pinnacle/SHR	4.4390	0.0030	5.480	0.060	1009.000	11.000	156	6	159	6	0.0650	0.0010	7.300	0.2	7.3	0.2
3429-3-A	3429-3-A-2		Pinnacle/SHR	6.8060	0.0030	10.400	0.200	398.000	6.000	155	4	159	4	0.0810	0.0010	9.100	0.3	9.2	0.3
3429-3-A	3429-3-A-8a		Pinnacle/SHR	6.3960	0.0050	9.000	1.000	924.000	108.000	155	8	159	8	0.0780	0.0090	8.900	2.0	8.8	2.0
3429-3-A	3429-3-A-8b		Pinnacle/SHR	6.3960	0.0050	11.900	0.500	1338.000	61.000	158	6	163	6	0.0990	0.0040	11.400	1.0	11.4	1.0
SO148/1_570-1	570-1-3		Pinnacle/SHR	5.4420	0.0020	7.730	0.040	1025.000	5.000	149	3	153	3	0.0755	0.0004	8.500	0.1	8.5	0.1
SO148/2_571-2	571-2-1		Pinnacle/SHR	4.5290	0.0030	7.300	0.100	690.000	10.000	167	5	171	5	0.0850	0.0010	9.600	0.3	9.7	0.3
SO148/2_571-2	571-2-2		Pinnacle/SHR	5.0050	0.0020	8.000	0.500	1777.000	111.000	149	2	153	2	0.0850	0.0050	9.700	1.2	9.8	1.2
SO148/2_570-9	570-9-5		Pinnacle/SHR	5.0880	0.0020	9.060	0.070	1794.000	14.000	158	2	160	2	0.0950	0.0010	11.000	0.2	10.9	0.2
SO148/1_26	26		SE-Knoll	2.3890	0.0030	38.520	0.080	4905.000	25.000	60	6	127	6	0.9300	0.0020	26.770	5.5	267.6	5.5
SO148/1_26	26-1		SE-Knoll	3.1910	0.0010	45.700	0.300	14065.000	83.000	77	3	128	3	0.8170	0.0040	17.730	4.2	177.7	4.2
SO148/1_26	26-3		SE-Knoll	8.4160	0.0040	132.200	0.400	15595.000	59.000	82	3	153	3	0.8870	0.0030	22.150	4.5	221.7	4.5
SO148/1_565-7	565-7-7		SE-Knoll	4.4120	0.0010	15.800	0.200	633.000	9.000	155	2	168	2	0.1890	0.0030	22.300	0.7	22.3	0.7
SO109/1_36-4	36-4-Z-1		Alvin/NHR	3.6060	0.0020	31.900	0.200	1023.000	8.000	139	4	168	4	0.4740	0.0030	68.900	1.4	68.7	1.4
SO109/1_36-4	36-4-Z-2		Alvin/NHR	6.6840	0.0020	61.100	0.200	343.800	1.400	138	2	169	2	0.4900	0.0020	72.000	0.6	71.7	0.6
SO143_60-1	60-1-Ea, total		vent area/NHR	1.1300	0.0004	16.400	0.050	1.844	0.006	63	2			0.8280	0.0030
SO143_60-1	60-1-Eb, calcite		vent area/NHR	0.6377	0.0005	0.270	0.010	6.700	0.300	153	4	152	4	0.0179	0.0008	2.000	0.2	1.4	0.3
SO143_60-1	60-1-Eb, detritus		vent area/NHR	1.0497	0.0004	17.200	0.600	1.920	0.070	37	2			0.9500	0.0300
SO148/2_571-1	571-1a	Bottom water	Pinnacle/SHR	2.8820	0.0040					168	7
SO148/2_571-1	571-1b	Bottom water	Pinnacle/SHR	3.1280	0.0050					163	9
SO148/1_566-1	566-1	Bottom water	NHR	2.8560	0.0030					166	7
SO143_55-2	55-2-C	Pore water	SHR	6.2910	0.0060					153	7
SO143_221-2	221-2a	Pore water	SHR	6.0560	0.0050					352	9
SO143_221-2	221-2b	Pore water	SHR	5.8100	0.0100					361	21