Citation:

PANGAEA.745118, In supplement to: Sharkov, EV et al. (2005): Silicic Fe-Ti-oxide series of slow-spreading ridges: petrology, geochemistry, and genesis with reference to the Sierra Leone segment of the Mid-Atlantic Ridge axial zone at 6°N. Russian Journal of Earth Sciences, 7(4), 1-30

Name: (Table 9) U-Pb isotopic dating of zircons from cataclased hornblende gabbronorite of the Markov depression, Central Atlantic
Published: 2005
License: https://creativecommons.org/licenses/by/3.0/

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Project(s):

Archive of Ocean Data (ARCOD)

Coverage:

Median Latitude: 6.265000 * Median Longitude: -33.396700 * South-bound Latitude: 6.261700 * West-bound Longitude: -33.396700 * North-bound Latitude: 6.268300 * East-bound Longitude: -33.396700

Minimum Elevation: -3800.0 m * Maximum Elevation: -3400.0 m

Event(s):

I1028 * Latitude Start: 6.261700 * Longitude Start: -33.396700 * Latitude End: 6.268300 * Longitude End: -33.396700 * Elevation Start: -3800.0 m * Elevation End: -3400.0 m * Location: Mid-Atlantic Ridge * Campaign: * Basis: Akademik Ioffe * Method/Device: Dredge (DRG)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample code/label	Sample label		Sharkov, E V
2	Sample type	Samp type		Sharkov, E V
3	Sample mass	Samp m	g	Sharkov, E V
4	Lead	Pb	mg/kg	Sharkov, E V		radiogenic
5	Uranium	U	mg/kg	Sharkov, E V	Mass spectrometer Finnigan MAT 261
6	Lead-206/Lead-204 ratio	206Pb/204Pb		Sharkov, E V	Mass spectrometer Finnigan MAT 261
7	Lead-207/Lead-206 ratio	207Pb/206Pb		Sharkov, E V	Mass spectrometer Finnigan MAT 261
8	Lead-207/Lead-206, standard error	207Pb/206Pb std e	±	Sharkov, E V	Mass spectrometer Finnigan MAT 261
9	Lead-208/Lead-206 ratio	208Pb/206Pb		Sharkov, E V	Mass spectrometer Finnigan MAT 261
10	Lead-207/Uranium-235 ratio	207Pb/235U		Sharkov, E V	Mass spectrometer Finnigan MAT 261
11	Lead-207/Uranium-235, error	207Pb/235U e	±	Sharkov, E V	Calculated	2 sigma
12	Lead-206/Uranium-238 ratio	206Pb/238U		Sharkov, E V	Mass spectrometer Finnigan MAT 261
13	Lead-206/Uranium-238, error	206Pb/238U e	±	Sharkov, E V	Calculated	2 sigma
14	Age, dated	Age dated	ka	Sharkov, E V	Mass spectrometer Finnigan MAT 261	207Pb/235U
15	Age, dated standard deviation	Age dated std dev	±	Sharkov, E V	Calculated	207Pb/235U
16	Age, dated	Age dated	ka	Sharkov, E V	Mass spectrometer Finnigan MAT 261	206Pb/238U
17	Age, dated standard deviation	Age dated std dev	±	Sharkov, E V	Calculated	206Pb/238U
18	Age, dated	Age dated	ka	Sharkov, E V	Mass spectrometer Finnigan MAT 261	207Pb/206Pb
19	Age, dated standard deviation	Age dated std dev	±	Sharkov, E V	Calculated	207Pb/206Pb

License:

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

Size:

57 data points

Data

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

1 Sample label	2 Samp type	3 Samp m [g]	4 Pb [mg/kg] (radiogenic)	5 U [mg/kg] (Mass spectrometer Finnigan MA...)	6 206Pb/204Pb (Mass spectrometer Finnigan MA...)	7 207Pb/206Pb (Mass spectrometer Finnigan MA...)	8 207Pb/206Pb std e [±] (Mass spectrometer Finnigan MA...)	9 208Pb/206Pb (Mass spectrometer Finnigan MA...)	10 207Pb/235U (Mass spectrometer Finnigan MA...)	11 207Pb/235U e [±] (2 sigma, Calculated)	12 206Pb/238U (Mass spectrometer Finnigan MA...)	13 206Pb/238U e [±] (2 sigma, Calculated)	14 Age dated [ka] (207Pb/235U, Mass spectrometer...)	15 Age dated std dev [±] (207Pb/235U, Calculated)	16 Age dated [ka] (206Pb/238U, Mass spectrometer...)	17 Age dated std dev [±] (206Pb/238U, Calculated)	18 Age dated [ka] (207Pb/206Pb, Mass spectromete...)	19 Age dated std dev [±] (207Pb/206Pb, Calculated)
I1028-1	18 zircon grains	0.000068	106.35	1263.9	98.68	0.04787	71	0.38726	0.10059	1.76	0.015240	0.56	97300	1700	97500	600	92900	35000
I1028-3	35 euhedral zircon grains	0.000140	108.71	1336.2	124.60	0.04813	62	0.35653	0.10085	1.42	0.015190	0.34	97600	1400	97200	300	106000	30000
I1028-4	30 zircon grains	0.000077	75.69	1281.8	79.08	0.04793	91	0.66831	0.08038	2.45	0.012163	0.77	78500	1900	77900	600	96100	49000