Citation:

dsdp.proc.9.105.1972

Name: Annotated record of the detailed examination of Mn deposits from DSDP Site 79, Leg 9 (Cores 79-2, 79-3, 79A-2, 79A-3)
Published: 1972
License: https://creativecommons.org/licenses/by/3.0/

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Published: 1972 (exact date unknown) • DOI registered: 2016-12-16

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Abstract:

Site 79 is located on the crest of the equatorial Pacific sediment belt (Ewing and others, 1968) and is the westernmost of a series of sites (79, 81, 82 and 83) that follow the crest of this belt eastward to and across the crest of the oceanic ridge, locally known as the East Pacific Rise. The purpose of these sites is two-fold: 1) to study variations in biostratigraphy and sediment type from west to east across the Pacific and 2) to paleontologically date basement and determine the rate of spreading of the Pacific plate since the time of deposition of the oldest sediments at Site 77.

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: 2.550300 * Longitude: -121.566700

Date/Time Start: 1969-12-31T00:00:00 * Date/Time End: 1969-12-31T00:00:00

Minimum DEPTH, sediment/rock: 64.60 m * Maximum DEPTH, sediment/rock: 149.65 m

Event(s):

9-79 * Latitude: 2.550300 * Longitude: -121.566700 * Date/Time: 1969-12-31T00:00:00 * Elevation: -4574.0 m * Penetration: 413.9 m * Recovery: 109.1 m * Location: North Pacific/VALLEY * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 16 cores; 123.7 m cored; 0 m drilled; 88.2 % recovery

9-79A * Latitude: 2.550300 * Longitude: -121.566700 * Date/Time: 1969-12-31T00:00:00 * Elevation: -4574.0 m * Penetration: 287 m * Recovery: 34.5 m * Location: North Pacific/VALLEY * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 4 cores; 36.5 m cored; 0 m drilled; 94.5 % 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	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	Depth, top/min	Depth top	m
6	Depth, bottom/max	Depth bot	m
7	Position	Position		Visual description
8	Deposit type	Deposit type
9	Quantity of deposit	Quantity
10	Sediment type	Sediment
11	Comment	Comment

License:

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

Size:

36 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 Depth top [m]	6 Depth bot [m]	7 Position	8 Deposit type	9 Quantity	10 Sediment	11 Comment
9-79	9-79-2-1	9-79-2	64.60	60.3	69.5	In sediment	Mn micronodule	Many	The Clipperton formation, a varicolored unit. Interbedded colors in beds 1 to 20 cm. About 30% bed are pale purple (5P6/2) to very dusky purple (5P2/2), calcareous nannofossil and radiolarian ooze with foraminifers (Upper Miocene)	Manganese is (10%-40%). The purple color is probably due to some manganese mineral(s) that coats the surfaces of radiolarians. Individual manganese grains are also disseminated through the beds. ( Figure 37. Hole 79, Core 2 (60.3 to 69.5 m), page 360 )
9-79	9-79-3-1	9-79-3	135.35	126.8	135.9	In sediment	Mn micronodule	Several	The Clipperton formation, a varicolored unit. Interbedded colors in beds 1 to 20 cm. About 10% bed are pale purple (5P6/2) to very dusky purple (5P2/2), calcareous nannofossil and radiolarian ooze with foraminifers (Upper Miocene)	Manganese is (10%-40%). The purple color is probably due to some manganese mineral(s) that coats the surfaces of radiolarians. Individual manganese grains are also disseminated through the beds. ( Figure 41. Hole 79, Core 3 (126.8 to 135.9 m), page 364 )
9-79A	9-79A-2-1	9-79A-2	74.05	69.5	78.6	In sediment	Mn micronodule	Many	The Clipperton formation, a varicolored unit. Interbedded colors in beds 1 to 20 cm. About 30% bed are pale purple (5P6/2) to very dusky purple (5P2/2), calcareous nannofossil and radiolarian ooze with foraminifers (Upper Miocene)	Manganese is (10%-40%). The purple color is probably due to some manganese mineral(s) that coats the surfaces of radiolarians. Individual manganese grains are also disseminated through the beds. ( Figure 39. Hole 79A, Core 2 (69.5 to 78.6 m), page 362 )
9-79A	9-79A-3-1	9-79A-3	149.65	145.1	154.2	In sediment	Mn micronodule	Several	The Clipperton formation, a varicolored unit. Interbedded colors in beds 1 to 20 cm. About 10% bed are pale purple (5P6/2) to very dusky purple (5P2/2), calcareous nannofossil and radiolarian ooze with foraminifers (Upper Miocene)	Manganese is (10%-40%). The purple color is probably due to some manganese mineral(s) that coats the surfaces of radiolarians. Individual manganese grains are also disseminated through the beds. ( Figure 43. Hole 79A, Core 3 (145.1 to 154.2 m), page 366 )