Citation:

PANGAEA.865336

Name: Annotated record of the detailed examination of Mn deposits from DSDP Site 25, Leg 4 (Core 4-25A-1)
Published: 1970
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

At the Leg 4 pre-cruise meeting in Miami, Florida, in January 1969, the Ridge site was proposed as an additional site to be investigated, if possible. Since the water depth and sediment thickness at this site were both minimal (2000 meters and less than 100 meters, respectively) and the location was not far from the track between initially planned sites, the shipboard party decided, upon completion of work at Site 24, to make a 24-hour drilling effort on the North Brazilian Ridge. The drilling objectives at this location were to sample and date the sediments atop the Ridge crest and to determine the nature, age and origin of the consolidated material beneath the thin mantle of sediment.

Related to:

Bader, Richard G; Gerard, Robert D; Benson, William E; Bolli, Hans M; Hay, William W; Rothwell, W Thomas; Ruef, Michael R; Riedel, William R; Sayles, Frederick L (1970): Site 25. In: Bader, R.G. et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Government Print Office), 4, 59-76, https://doi.org/10.2973/dsdp.proc.4.104.1970

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:

Latitude: -0.516700 * Longitude: -39.240000

Date/Time Start: 1969-02-10T00:00:00 * Date/Time End: 1969-02-10T00:00:00

Minimum DEPTH, sediment/rock: 40.8 m * Maximum DEPTH, sediment/rock: 40.8 m

Event(s):

4-25A * Latitude: -0.516700 * Longitude: -39.240000 * Date/Time: 1969-02-10T00:00:00 * Elevation: -1916.0 m * Penetration: 59 m * Recovery: 2.4 m * Location: South Atlantic/RIDGE * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 1 core; 9 m cored; 11 m drilled; 26.7 % 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	Comment
1	Sample ID	Sample ID		Bader, Richard G
2	Date/Time of event	Date/Time
3	Latitude of event	Latitude
4	Longitude of event	Longitude
5	Elevation of event	Elevation	m
6	Sample code/label	Sample label		Bader, Richard G
7	DEPTH, sediment/rock	Depth sed	m	Bader, Richard G	Geocode
8	Position	Position		Bader, Richard G
9	Deposit type	Deposit type		Bader, Richard G
10	Quantity of deposit	Quantity		Bader, Richard G
11	Size	Size		Bader, Richard G
12	Substrate type	Substrate		Bader, Richard G
13	Sediment type	Sediment		Bader, Richard G
14	Comment	Comment		Bader, Richard G
15	Description	Description		Bader, Richard G

License:

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

Size:

19 data points

Data

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

1 Sample ID	2 Date/Time	3 Latitude	4 Longitude	5 Elevation [m]	6 Sample label	7 Depth sed [m]	8 Position	9 Deposit type	10 Quantity	11 Size	12 Substrate	13 Sediment	14 Comment	15 Description
4-25A-1-CC-1	1969-02-10	-0.5167	-39.2400	-1916	4-25A-1-CC	40.8	Buried	Mn nodule	2	2.0 cm	Core; limestone	Ooze	Foraminiferal ooze (Miocene)	Two cobble-sized manganese nodules. One nodule has core of weathered limestone and veinlets of botryoidal limonite similar to gravel noted in Hole 25 (Figure 13. Core 1, Hole 25A, Page 76)
4-25A-1-CC-2	1969-02-10	-0.5167	-39.2400	-1916	4-25A-1-CC	40.8	Buried	Mn coating	13		Fragment; limestone	Ooze	Foraminiferal ooze (Miocene)	13 moderately to well rounded fragments of dense algal limestone coated with manganese oxide (Figure 13. Core 1, Hole 25A, Page 76)