Citation:

PANGAEA.961691

Name: Bulk chemical composition of pelagic sediment samples from the Central Pacific Basin, GH 79-1 detailed survey area
Creator: David Z Piper
Published: 2023-08-23
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

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Published: 2023-08-23 • DOI registered: 2023-09-26

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Abstract:

Sediment samples from three box cores and one piston core, collected on cruise GH79-1 of the research vessel Hakurei-Maru, were analyzed for major oxides and minor elements. All cores were collected from a small area of the Central Pacific Ocean, centered at 167°40'W and 10°N. The concentrations of 10 elements (Si, Al, Fe, Mg, Ca, Na, K, Ti, P, and Mn) were determined for 15 bulk sediment samples using X-ray fluorescence. Between the four sites, compositional ratios exhibit a longitudinal trend. This east-west trend in the composition of the ISF may be related to a decreasing influence of continentally derived material from east to west. The ISF at DOMES Site C, the easternmost of these four locations, most closely resembles the composition of terrigenous mud. An increase in the relative contribution of basaltic debris, from east to west, may be one factor contributing to the relative increases of Fe2O3, MgO, CaO, and TiO2 and the decrease in total alkalies along this same trend.

Keyword(s):

Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

Related to:

Mizuno, Atsuyuki; Nakao, Seizo (1982): Regional Data of Marine Geology, Geophysics, and Manganese Nodules: the Wake-Tahiti Transect in the Central Pacific, January – March 1980 (GH80-1 Cruise). Geological Survey of Japan, 399 pp, https://www.gsj.jp/en/publications/cruise-rep/cruise18.html

Mochizuki, Tsunekazu; Terashima, Shigeru; Mizuno, Atsuyuki; Nakao, Seizo (2023): Chemical composition of manganese nodules from GH80-1 cruise [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.961694

Piper, David Z (1981): Chemical composition of sediment cores from the GH79-1 area, , pp. in: Mizuno, A. (Ed.), Deep Sea Mineral Resources Investigation in the Northern Part of the Central Pacific Basin, January-March 1979 (GH79-1 Cruise), Geological Survey of Japan Bulletin, 229-235, 15-16.pdf

Sugisaki, Ryuichi (2023): Chemical analysis of major constituents in surface sediment samples from GH79-1 cruise [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.961693

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:

Median Latitude: 9.957042 * Median Longitude: -167.728333 * South-bound Latitude: 9.827333 * West-bound Longitude: -167.813833 * North-bound Latitude: 10.022667 * East-bound Longitude: -167.649833

Date/Time Start: 1979-02-18T00:00:00 * Date/Time End: 1979-02-22T00:00:00

Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 3.790 m

Event(s):

GH79-1-G948 (Station 1481) * Latitude: 10.022667 * Longitude: -167.813833 * Date/Time: 1979-02-18T00:00:00 * Elevation: -5287.0 m * Recovery: 0.35 m * Location: Pacific Ocean * Campaign: * Basis: Hakurei-Maru (1974) * Method/Device: Box corer (BC)

GH79-1-G950 (Station 1483) * Latitude: 9.827333 * Longitude: -167.649833 * Date/Time: 1979-02-19T00:00:00 * Elevation: -5211.0 m * Recovery: 0.22 m * Location: Pacific Ocean * Campaign: * Basis: Hakurei-Maru (1974) * Method/Device: Box corer (BC)

GH79-1-G951 (Station 1484) * Latitude: 9.991333 * Longitude: -167.660000 * Date/Time: 1979-02-19T00:00:00 * Elevation: -5244.0 m * Recovery: 0.36 m * Location: Pacific Ocean * Campaign: * Basis: Hakurei-Maru (1974) * Method/Device: Box corer (BC)

Comment:

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.

This dataset represents the digitized Table XVI-1, pp. 231 of the related publication.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Latitude of event	Latitude
3	Longitude of event	Longitude
4	Elevation of event	Elevation	m
5	Identification	ID		Piper, David Z
6	Sample type	Samp type		Piper, David Z
7	DEPTH, sediment/rock	Depth sed	m	Piper, David Z		Geocode
8	Depth, top/min	Depth top	m	Piper, David Z
9	Depth, bottom/max	Depth bot	m	Piper, David Z
10	Silicon dioxide	SiO2	%	Piper, David Z	X-ray fluorescence (XRF)
11	Aluminium oxide	Al2O3	%	Piper, David Z	X-ray fluorescence (XRF)
12	Iron oxide, Fe2O3	Fe2O3	%	Piper, David Z	X-ray fluorescence (XRF)
13	Magnesium oxide	MgO	%	Piper, David Z	X-ray fluorescence (XRF)
14	Calcium oxide	CaO	%	Piper, David Z	X-ray fluorescence (XRF)
15	Sodium oxide	Na2O	%	Piper, David Z	X-ray fluorescence (XRF)
16	Potassium oxide	K2O	%	Piper, David Z	X-ray fluorescence (XRF)
17	Titanium dioxide	TiO2	%	Piper, David Z	X-ray fluorescence (XRF)
18	Phosphorus pentoxide	P2O5	%	Piper, David Z	X-ray fluorescence (XRF)
19	Manganese oxide	MnO	%	Piper, David Z	X-ray fluorescence (XRF)
20	Description	Description		Piper, David Z