Citation:

1468.pdf

Name: (Figure 2, page 940) K-T boundary enrichment for cerium and iridium chemical composition of layers inside the ZETES-3D manganese nodule in the Pacific Ocean
Published: 1991
License: https://creativecommons.org/licenses/by/3.0/

Always quote citation above when using data! You can download the citation in several formats below.

RIS Citation BibTeX Citation Text Citation Facebook TwitterShow Map Google Earth

Abstract:

Hydrogenous manganese nodules form on the ocean floor by slow authigenic precipitation (1-6 mm/Ma) of the oxyhydroxides of manganese and iron that continuously scavenge trace elements from the marine environment. Consequently, these nodules represent independent marine deposits useful for the study of the chemical signatures of the paleomarine environments. The results presented are a continuation of a study of the Zetes-3D nodule from the Pacific Ocean. It is a large (24x17x10 cm) hydrogenous nodule whose slow growth rate of 1.3 mm/Ma was detremined using 10Be techniques. A positive cerium anomaly is observed throughout the nodule and its Ir content indicates a sharp spike at 54-62 Ma in fair agreement with the K-T event.

Source:

Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT

Further details:

Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN

Project(s):

NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS)

Coverage:

Latitude: 40.267000 * Longitude: 170.333000

Date/Time Start: 1966-04-21T00:00:00 * Date/Time End: 1966-04-21T00:00:00

Minimum Elevation: -2037.0 m * Maximum Elevation: -2037.0 m

Event(s):

ZTES-3D (ZTES03AR-003D) * Latitude: 40.267000 * Longitude: 170.333000 * Date/Time: 1966-04-21T00:00:00 * Elevation: -2037.0 m * Location: Pacific Ocean * Campaign: (ZETES) * Basis: Argo * Method/Device: Dredge (DRG)

Comment:

Iridium analysis method described in: J.B. Cumming, P.P. Parekh, A.V. Murali, A novel approach to the determination of iridium via Ge-coincidence/NaI(Tl)-anticoincidence gamma-ray spectrometry, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 265, Issue 3, 1988, Pages 468-474, ISSN 0168-9002, doi:10.1016/S0168-9002(98)90015-8.

From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample ID	Sample ID		Murali, A V
2	Latitude of event	Latitude
3	Longitude of event	Longitude
4	DEPTH, sediment/rock	Depth sed	m	Murali, A V		Geocode
5	DISTANCE	Distance	cm	Murali, A V		Geocode – from the outer surface
6	Distance, minimum	Dist min	mm	Murali, A V		from the outer surface
7	Distance, maximum	Dist max	mm	Murali, A V		from the outer surface
8	Nickel	Ni	µg/kg	Murali, A V	Atomic absorption spectrometry (AAS)
9	Cobalt	Co	µg/kg	Murali, A V	Atomic absorption spectrometry (AAS)
10	Cerium	Ce	µg/kg	Murali, A V	Atomic absorption spectrometry (AAS)
11	Iridium	Ir	ng/kg	Murali, A V	HPGe-coincidence/NaI(Tl)-anticoincidence spectrometry
12	Age, dated	Age dated	ka	Murali, A V

License:

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

Size:

56 data points

Data

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

1 Sample ID	2 Latitude	3 Longitude	4 Depth sed [m]	5 Distance [cm]	6 Dist min [mm]	7 Dist max [mm]	8 Ni [µg/kg]	9 Co [µg/kg]	10 Ce [µg/kg]	11 Ir [ng/kg]	12 Age dated [ka]
ZTES-3D-1_M1	40.2670	170.3330	0	0.100	0.0	2	4404	4710	1060	11000	750
ZTES-3D-1_M2	40.2670	170.3330		0.375	3.5	4	4441	2922	1523	13000	2900
ZTES-3D-1_M3	40.2670	170.3330		2.250	20.0	25	3954	3256	1411	7000	17200
ZTES-3D-1_M4	40.2670	170.3330		3.250	29.0	36	6670	4779	1892	9000	51900
ZTES-3D-1_M5	40.2670	170.3330		6.750	65.0	70	6449	4642	2017	37000	57650
ZTES-3D-1_M6	40.2670	170.3330		8.500	80.0	90	6008	4415	1889	19000	65350
ZTES-3D-1_M7	40.2670	170.3330		9.500	90.0	100	5740	4753	1153	10000	73050