Citation:

dsdp.proc.1.124.1969

Name: Annotated record of the detailed examination of Mn deposits from DSDP Leg 1 (Holes 4 and 7A)
Published: 1969
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Visual examination of the cores and microscopic examination of smear slides of the wide variety of sediments cored on Leg 1 revealed an equal range of particle origins, modes of transport, and manner of deposition. Brown deep-sea clays characterize the uppermost (Pliocene-Pleistocene) sediments of the Atlantic sites, and red deep-sea clay was cored below Middle Eocene sediments at Site 7. The main mineral constituents are clay minerals and quartz. The color results mainly from iron and manganese minerals. Manganese oxides are present in small nodules in theses red clays. The X radiographs of Site 4 and Site 7 commonly show a distinct granular texture, presumably because of the X-ray opaque limonite and pyrite grains. For Site 4 they also show larger ferruginous and possibly manganiferous nodules, some of which appear to be mineralized pumice fragments. With certain exceptions, the general composition of the brown and red clays cored on Leg 1 (the presence of much kaolinite and quartz, and scarcity of zeolite) suggests a largely terrigenous origin.

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):

Deep Sea Drilling Project (DSDP)

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

Coverage:

Median Latitude: 27.306000 * Median Longitude: -71.044350 * South-bound Latitude: 24.478000 * West-bound Longitude: -73.792000 * North-bound Latitude: 30.134000 * East-bound Longitude: -68.296700

Date/Time Start: 1968-08-29T00:00:00 * Date/Time End: 1968-09-16T00:00:00

Minimum DEPTH, sediment/rock: 4.95 m * Maximum DEPTH, sediment/rock: 287.60 m

Event(s):

1-4 * Latitude: 24.478000 * Longitude: -73.792000 * Date/Time: 1968-08-29T00:00:00 * Elevation: -5319.0 m * Penetration: 258.8 m * Recovery: 12.9 m * Location: North Atlantic/BASIN * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 4 cores; 36.7 m cored; 0 m drilled; 35.1 % recovery

1-7A * Latitude: 30.134000 * Longitude: -68.296700 * Date/Time: 1968-09-16T00:00:00 * Elevation: -5182.0 m * Penetration: 296.3 m * Recovery: 4.5 m * Location: North Atlantic/CONT RISE * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 2 cores; 18.3 m cored; 1.5 m drilled; 24.6 % recovery

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.

Parameter(s):

#	Name	Short Name	Unit	Method/Device	Comment
1	Event label	Event
2	Identification	ID
3	Sample code/label	Sample label
4	DEPTH, sediment/rock	Depth sed	m		Geocode
5	Position	Position		Visual description
6	Deposit type	Deposit type
7	Quantity of deposit	Quantity
8	Size	Size
9	Substrate type	Substrate
10	Sediment type	Sediment
11	Comment	Comment
12	Description	Description
13	File name	File name
14	Uniform resource locator/link to image	URL image

License:

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

Size:

61 data points

Data

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

1 Event	2 ID	3 Sample label	4 Depth sed [m]	5 Position	6 Deposit type	7 Quantity	8 Size	9 Substrate	10 Sediment	11 Comment	12 Description	13 File name	14 URL image
1-4	1-4-1-4,45-1	1-4-1-4,45	4.95	Buried	Fe-Mn coating	Several		Pebble	Clay	Pleistocene brown deep-sea clay with abundant ferric and pyrite granules (Cenozoic)	Fe-Mn coated pumice pebbles (Figure 16, Site 4, Core 1, Section 4, page 194)	Fig_Plate1A_DSDPLeg1.jpg	Fig_Plate1A_DSDPLeg1.jpg
1-4	1-4-1-4,95-1	1-4-1-4,95	5.45	Buried	Fe-Mn coating	Several		Pebble	Clay	Pleistocene brown deep-sea clay with abundant ferric and pyrite granules (Cenozoic)	Fe-Mn coated pumice pebbles (Figure 16, Site 4, Core 1, Section 4, page 194)	Fig_Plate1A_DSDPLeg1.jpg	Fig_Plate1A_DSDPLeg1.jpg
1-4	1-4-1-5,120-1	1-4-1-5,120	7.20	Buried	Fe-Mn nodule	Several	Large		Clay	Yellowish-brown deep-sea clay moderately silty (Cenozoic)	Fe-Mn nodules of intermediate and large size (Figure 17, Site 4, Core 1, Section 4, page 195)
1-4	1-4-1-6,30-1	1-4-1-6,30	7.80	Buried	Fe-Mn nodule	Several	Large		Clay	Silty clay (Cenozoic)	Fe-Mn nodules of intermediate and large size (Figure 18, Site 4, Core 1, Section 4, page 196)	Fig_Plate1B_DSDPLeg1.jpg	Fig_Plate1B_DSDPLeg1.jpg
1-4	1-4-1-6,0-130-1	1-4-1-6,0-130	8.25	In sediment	Fe-Mn micronodule	Several			Clay	Silty clay (Cenozoic)	Small Fe-Mn micronodules disseminated throughout (Figure 18, Site 4, Core 1, Section 4, page 196)	Fig_Plate1B_DSDPLeg1.jpg	Fig_Plate1B_DSDPLeg1.jpg
1-7A	1-7A-3-1,49-51-1	1-7A-3-1,49-51	287.60	Buried	Mn nodule	Several	Up to 1.0 cm		Clay	Silty clay, laminated and color-banded, reddish-gray to pinkish and reddish-brown	Conspicuous small black Mn nodules. One is 1.0x0.5x0.2 cm (Figure 6, Site 7A, Core 3, page 300)