Citation:

dsdp.proc.7.108.1971

Name: Annotated record of the detailed examination of Mn deposits from DSDP Site 66, Leg 7 (Cores 66-4, 66-6, 66-9, 66-10, 66A-3, 66A-5)
Published: 1971
License: https://creativecommons.org/licenses/by/3.0/

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Published: 1971 (exact date unknown) • DOI registered: 2016-12-14

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Abstract:

One of the principal objectives in the Central Pacific Basin was to elucidate the Paleobathymetric history of the region, which is located amidst groups of atolls and guyots that have subsided as much as 2 kilometers since mid-Cretaceous times. After failure to penetrate the entire sedimentary section and to sample basement at Site 65, on the west side of the Central Basin another site in the Basin where basement rocks might be sampled was searched. Likely places were known from unpublished reflection profiles on the east side of the Basin near the Line Islands by the Hawaii Institute of Geophysics. Finally it was decided to drill a transparent section once again in this area acoiding turbidites formations.

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: 2.385150 * Median Longitude: -166.121800 * South-bound Latitude: 2.376800 * West-bound Longitude: -166.121800 * North-bound Latitude: 2.393500 * East-bound Longitude: -166.121800

Date/Time Start: 1969-09-19T00:00:00 * Date/Time End: 1969-09-19T00:00:00

Minimum DEPTH, sediment/rock: 38.1 m * Maximum DEPTH, sediment/rock: 192.0 m

Event(s):

7-66 * Latitude: 2.393500 * Longitude: -166.121800 * Date/Time: 1969-09-19T00:00:00 * Elevation: -5310.0 m * Penetration: 193 m * Recovery: 48.8 m * Location: North Pacific/BASIN * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 cores; 72 m cored; 0 m drilled; 67.7 % recovery

7-66A * Latitude: 2.376800 * Longitude: -166.121800 * Date/Time: 1969-09-19T00:00:00 * Elevation: -5326.0 m * Penetration: 86 m * Recovery: 65.8 m * Location: North Pacific/BASIN * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 8 cores; 69 m cored; 0 m drilled; 95.4 % 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	Substrate type	Substrate
9	Sediment type	Sediment
10	Comment	Comment
11	Description	Description

License:

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

Size:

67 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 Substrate	9 Sediment	10 Comment	11 Description
7-66	7-66-4-CC,0-1	7-66-4-CC,0	148.1	In sediment	Mn micronodule	Few	Rock; altered basalt	Mudstone	Zeolitic mudstone (Paleocene)	The rock is a dark yellowish-brown to brownish-black porcelanite (10YR3/2-10YR2/1) in contact with overlying dark brown (10YR3/2-wet) mudstone. Other coarse particles present include ferromanganese micronodules (rare, <200µm in diameter)
7-66	7-66-6-1,10-1	7-66-6-1,10	165.1	Buried	Mn nodule	1		Clay	Pelagic clay, illitic , mainly light brown, intense pale brown and dark brown mottling (Paleocene)	Manganese nodule ( Lithology and biostratigraphy of Core 6, Hole 66.0, page 758 )
7-66	7-66-6-1,10-1	7-66-6-1,50	165.5	Buried	Mn nodule	1		Clay	Pelagic clay, illitic , mainly light brown, intense pale brown and dark brown mottling (Paleocene)	Manganese nodule ( Lithology and biostratigraphy of Core 6, Hole 66.0, page 758 )
7-66	7-66-9-3,50-1	7-66-9-3,50	190.8	Buried	Mn coating	1	Rock; altered basalt	Clay	Manganiferous pelagic clay, brownish black, contains basalt fragments and hyaloclastite debris (Upper cretaceous)	The rock is a moderate yellowish-brown (10YR 5/4-wet), fine-grained basalt. Fragments (up to 5 centimeters in-diam.) are coated with white alter. products and ferrom. oxides
7-66	7-66-10-CC,0-1	7-66-10-CC,0	192.0	Buried	Mn staining	1	Rock; altered basalt	Hardground	(Upper cretaceous)	Dense, fine-grained altered basalt fragmented into < 5-centimeter blocks, some of which have manganese stained surfaces with dendrites of ferromanganese oxides extending at least 1 centimeter into the rock
7-66A	7-66A-3-CC,0-1	7-66A-3-CC,0	38.1	Buried	Mn nodule	1		Ooze	Diatomaceous radiolarian ooze, dark yellowish brown, intense grayish-orange mottling (Upper miocene)	Soft manganese nodule ( Lithology and biostratigraphy of Core 3, Hole 66.1, page 786 )
7-66A	7-66-5-1,30-1	7-66-5-1,30	47.3	Buried	Mn nodule	1		Ooze	Diatomaceous radiolarian ooze, dark yellowish brown, moderate to intense light grayish-orange mottling (Middle miocene)	Manganese nodule ( Lithology and biostratigraphy of Core 5, Hole 66.1, page 798 )
7-66A	7-66-5-1,70-1	7-66-5-1,70	47.7	Buried	Mn nodule	1		Ooze	Diatomaceous radiolarian ooze, dark yellowish brown, moderate to intense light grayish-orange mottling (Middle miocene)	Manganese nodule ( Lithology and biostratigraphy of Core 5, Hole 66.1, page 798 )