Citation:

dsdp.proc.24.127.1974

Name: Annotated record of the detailed examination of Mn deposits from DSDP Leg 24 (Sites 234, 238)
Published: 1974
License: https://creativecommons.org/licenses/by/3.0/

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Published: 1974 (exact date unknown) • DOI registered: 2017-01-04

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Abstract:

During Leg 24 three drilling sites were occupied in the Gulf of Aden (231, 232, 233), two in the Somali Basin (234, 235), and three in the western Indian Ocean (236, 237, 238). The location of these sites is shown in Figure 1; latitude, water depth, and penetration depth are indicated in Table 1. Figure 2 summarizes the lithologies and stratigraphy of all eight sites cored. In this chapter are included lithologic summaries for each of the sites. The sediments are then discussed in terms of their individual biogenic, terrigenous, volcanogenic, or authigenic components and their sedimentary structures. In a series of synthesis sections the hemipelagic, pelagic, and basal metaliferous sedimentary facies are discussed.

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: -3.335400 * Median Longitude: 60.875350 * South-bound Latitude: -11.153500 * West-bound Longitude: 51.224700 * North-bound Latitude: 4.482700 * East-bound Longitude: 70.526000

Date/Time Start: 1972-05-19T00:00:00 * Date/Time End: 1972-06-16T00:00:00

Minimum DEPTH, sediment/rock: 2.30 m * Maximum DEPTH, sediment/rock: 495.59 m

Event(s):

24-234 * Latitude: 4.482700 * Longitude: 51.224700 * Date/Time: 1972-05-19T00:00:00 * Elevation: -4721.0 m * Penetration: 247 m * Recovery: 90.1 m * Location: Indian Ocean//RIDGE * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 15 cores; 142.5 m cored; 0 m drilled; 63.2 % recovery

24-238 * Latitude: -11.153500 * Longitude: 70.526000 * Date/Time: 1972-06-16T00:00:00 * Elevation: -2832.0 m * Penetration: 586.5 m * Recovery: 424 m * Location: Indian Ocean//FRACTURE ZONE * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 63 cores; 577 m cored; 9.5 m drilled; 73.5 % 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	Principal Investigator	Method/Device	Comment
1	Event label	Event		Cronan, David S
2	Identification	ID		Cronan, David S
3	Sample code/label	Sample label		Cronan, David S
4	DEPTH, sediment/rock	Depth sed	m	Cronan, David S		Geocode
5	Position	Position		Cronan, David S	Visual description
6	Deposit type	Deposit type		Cronan, David S
7	Quantity of deposit	Quantity		Cronan, David S
8	Size	Size		Cronan, David S
9	Sediment type	Sediment		Cronan, David S
10	Comment	Comment		Cronan, David S
11	Description	Description		Cronan, David S

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 Event	2 ID	3 Sample label	4 Depth sed [m]	5 Position	6 Deposit type	7 Quantity	8 Size	9 Sediment	10 Comment	11 Description
24-234	4-234-1-2,80-1	4-234-1-2,80	2.30	Buried	Mn nodule	1		Mud	Sand bearing marly nanno mud, grayish orange (10YR7/4) to moderate yellowish brown (10YR5/4) (Neogene)	Manganese nodule at 1-2-80. ( Site 234, Core 1, Cored interval: 0.0-9.5 cm, page 260 )
24-234	24-234-1-3,10-1	24-234-1-3,10	3.10	Buried	Mn nodule	1		Ooze	Nanno chalk ooze, dusky yellow (5Y6/4) (Neogene)	Manganese nodule at 1-3-10. ( Site 234, Core 1, Cored interval: 0.0-9.5 cm, page 260 )
24-234	24-234-1-3,90-1	24-234-1-3,90	3.90	Buried	Mn nodule	1		Ooze	Nanno chalk ooze, dusky yellow (5Y6/4) (Neogene)	Manganese nodule at 1-3-90. ( Site 234, Core 1, Cored interval: 0.0-9.5 cm, page 260 )
24-234	24-234-1-3,125-1	24-234-1-3,125	4.25	Buried	Mn nodule	1		Ooze	Nanno chalk ooze, dusky yellow (5Y6/4) (Neogene)	Manganese nodule at 1-3-125. ( Site 234, Core 1, Cored interval: 0.0-9.5 cm, page 260 )
24-234	24-234-1-5,3-1	24-234-1-5,3	6.03	Buried	Mn nodule	1	7.0x6.0x6.0 cm	Ooze	Nanno ooze, grayish orange to grayish green (Neogene)	Manganese nodule (7x6x6 cm) at 1-5-3. ( Site 234, Core 1, Cored interval: 0.0-9.5 cm, page 260 )
24-238	24-238-53-3,22-1	24-238-53-3,22	493.72	In sediment	Mn micronodule	Several		Ooze	Nanno marl ooze mixed with Iron oxide bearing sandy volcanic glass (Upper Oligocene)	Coarse material, volcanic debris, palagonite, foraminifera, fragments of limestone. 5% manganese micronodules. ( Site 238, Core 53, Cored interval: 490.5-500.0 cm, page 512 )
24-238	24-238-53-4,59-1	24-238-53-4,59	495.59	In sediment	Mn micronodule	Several		Ooze	Nanno marl ooze mixed with Iron oxide bearing sandy volcanic glass (Upper Oligocene)	Coarse material, volcanic debris, palagonite, foraminifera, fragments of limestone. 5% manganese micronodules. ( Site 238, Core 53, Cored interval: 490.5-500.0 cm, page 512 )