Citation:

dsdp.proc.70.115.1983

Name: (Table 3) Radiochemistry of Mn deposits at DSDP Hole 54-424
Published: 1983
License: https://creativecommons.org/licenses/by/3.0/

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Project(s):

Deep Sea Drilling Project (DSDP)

Coverage:

Latitude: 0.593800 * Longitude: -86.130300

Date/Time Start: 1977-05-23T00:00:00 * Date/Time End: 1977-05-23T00:00:00

Minimum Elevation: -2685.0 m * Maximum Elevation: -2685.0 m

Event(s):

54-424 * Latitude: 0.593800 * Longitude: -86.130300 * Date/Time: 1977-05-23T00:00:00 * Elevation: -2685.0 m * Penetration: 76 m * Recovery: 36.4 m * Location: North Pacific/MOUND * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 7 cores; 66.5 m cored; 9.5 m drilled; 54.8 % recovery

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample code/label	Sample label		Lalou, Claude	DSDP/ODP/IODP sample designation
2	Description	Description		Lalou, Claude
3	Thorium-232	232Th	mg/kg	Lalou, Claude	Alpha spectrometry
4	Thorium-232, standard deviation	232Th std dev	±	Lalou, Claude	Alpha spectrometry
5	Uranium-238	238U	mg/kg	Lalou, Claude	Alpha spectrometry
6	Uranium-238, standard deviation	238U std dev	±	Lalou, Claude	Alpha spectrometry
7	Uranium-234/Uranium-238 activity ratio	(234U/238U)		Lalou, Claude	Alpha spectrometry	Unit is dpm/dpm
8	Uranium-234/Uranium-238 activity ratio, standard deviation	(234U/238U) std dev	±	Lalou, Claude	Alpha spectrometry
9	Uranium-234	234U	dpm/g	Lalou, Claude	Alpha spectrometry
10	Uranium-234, standard deviation	234U std dev	±	Lalou, Claude	Alpha spectrometry
11	Thorium-230	230Th	dpm/g	Lalou, Claude	Alpha spectrometry
12	Thorium-230, standard deviation	230Th std dev	±	Lalou, Claude	Alpha spectrometry
13	Thorium-230/Uranium-234 ratio	230Th/234U		Lalou, Claude	Alpha spectrometry
14	Thorium-230/Uranium-234 ratio, standard deviation	230Th/234U std dev	±	Lalou, Claude	Alpha spectrometry
15	Age, dated	Age dated	ka	Lalou, Claude
16	Age, dated standard deviation	Age dated std dev	±	Lalou, Claude

License:

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

Size:

123 data points

Data

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

1 Sample label	2 Description	3 232Th [mg/kg]	4 232Th std dev [±]	5 238U [mg/kg]	6 238U std dev [±]	7 (234U/238U)	8 (234U/238U) std dev [±]	9 234U [dpm/g]	10 234U std dev [±]	11 230Th [dpm/g]	12 230Th std dev [±]	13 230Th/234U	14 230Th/234U std dev [±]	15 Age dated [ka]	16 Age dated std dev [±]
54-424-1-1	Loose Mn, fragments of plates mixed with green hydrothermal mud; todorokite and birnessite identified.	0.510	0.17	4.06	0.23	1.170	0.070	3.50	0.180	0.400	0.040	0.115	0.013	13.5	1.5
54-424-1-CC	Two- to three-mm thick plate of pure todorokite; iron present.	0.210	0.05	11.30	0.40	1.171	0.039	9.73	0.038	0.653	0.048	0.067	0.005	7.5	0.5
54-424-2-CC	Internal portion of a 3-mm thick plate; pure todorokite.	0.470	0.20	21.70	0.70	1.154	0.027	18.40	0.600	0.870	0.068	0.047	0.004	5.2	0.5
54-424-3-5,35-40	Plate made with alternating dense and powdered sublayers; todorokite and birnessite identified.			1.07	0.09	1.260	0.130	0.99	0.070	0.270	0.042	0.273	0.048	34.0	7.0
54-424-3-5,118-121	Dense portion (2- to 2.5-mm thick) in a 3-mm thick plate; pure todorokite.	0.033		11.40	0.50	1.092	0.039	9.13	0.390	0.355	0.029	0.039	0.003	4.3	0.3
54-424-4-1,10-12	Two- to three-mm thick plate; pure todorokite.	0.036	0.03	10.60	0.70	1.272	0.060	10.00	0.600	0.543	0.031	0.054	0.005	6.0	0.6
54-424-4-4,40-428	Layer 1: Half of a 7- to 10-mm thick plate; birnessite with some todorokite; iron present.	0.140		3.97	0.19	1.060	0.052	3.10	0.140	1.320	0.070	0.426	0.030	60.0	6.0
54-424-4-4,40-428	Layer 2: Second half of same; about 4-mm thick; birnessite and todorokite, plus an insoluble residue.	0.150		9.60	0.40	0.902	0.030	6.37	0.270	0.700	0.050	0.110	0.009	12.7	1.0