Citation:

PANGAEA.874421

Name: Annotated record of the detailed examination of Mn deposits from DSDP Leg 70 (Holes 506, 506B, 506C, 507C, 507D, 507F, 509, 509B)
Published: 1982
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

The recovery of hydrothermal sediments at depth beneath the mounds of hydrothermal origin during a brief period of drilling on Deep Sea Drilling Project (DSDP) Leg 54 provided some evidence suggesting that hydrothermal material may be pervasive over a relatively large region inclusive of the mounds but also incorporating adjacent seafloor presently covered by pelagic sediments. As a result of the incomplete recovery of sediments at some sites and the poor recovery of basement rocks during Leg 54, it was suggested that a more carefully planned program be designed to drill a broader range of sites in the Galapagos mounds field. The major objectives of the first part of Leg 70 were to collect data and sediment representative of the hydrothermal mounds and ridges located about 20 km south of the Galapagos spreading axis.

Related to:

Schrader, Ed L; Moorby, S A; Migdisov, Areg A; Levi, Shaul; Laverne, Christine; Karato, Shun-ichiro; Jones, S C; Hubberten, Hans-Wolfgang; Bender, Michael L; Becker, Keir; Barrett, T J; Borella, Peter E; Honnorez, Jose J; von Herzen, Richard P (1983): Initial Reports of the Deep Sea Drilling Project. U.S. Government Printing Office, LXX, 481 pp, https://doi.org/10.2973/dsdp.proc.70.1983

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: 0.588200 * Median Longitude: -86.102013 * South-bound Latitude: 0.566700 * West-bound Longitude: -86.132200 * North-bound Latitude: 0.610200 * East-bound Longitude: -86.090000

Date/Time Start: 1979-11-15T00:00:00 * Date/Time End: 1979-11-27T00:00:00

Minimum DEPTH, sediment/rock: 0.030 m * Maximum DEPTH, sediment/rock: 23.180 m

Event(s):

70-506 * Latitude: 0.609800 * Longitude: -86.099800 * Date/Time: 1979-11-15T00:00:00 * Elevation: -2710.0 m * Penetration: 36.7 m * Recovery: 22.7 m * Location: North Pacific/MOUND * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 7 cores; 27.9 m cored; 8.8 m drilled; 81.5 % recovery

70-506B * Latitude: 0.610200 * Longitude: -86.091300 * Date/Time: 1979-11-15T00:00:00 * Elevation: -2711.0 m * Penetration: 20.7 m * Recovery: 20.2 m * Location: North Pacific/MOUND * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 6 cores; 20.7 m cored; 0 m drilled; 97.6 % recovery

70-506C * Latitude: 0.607700 * Longitude: -86.091300 * Date/Time: 1979-11-15T00:00:00 * Elevation: -2710.0 m * Penetration: 31.3 m * Recovery: 29.7 m * Location: North Pacific/MOUND * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 8 cores; 31.3 m cored; 0 m drilled; 95 % 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	Latitude of event	Latitude
3	Longitude of event	Longitude
4	Elevation of event	Elevation	m
5	Identification	ID
6	Sample code/label	Sample label
7	DEPTH, sediment/rock	Depth sed	m		Geocode
8	Position	Position		Visual description
9	Deposit type	Deposit type
10	Quantity of deposit	Quantity
11	Size	Size
12	Substrate type	Substrate
13	Sediment type	Sediment
14	Comment	Comment
15	Description	Description
16	File name	File name
17	Uniform resource locator/link to image	URL image

License:

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

Size:

428 data points

Data

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

1 Event	2 Latitude	3 Longitude	4 Elevation [m]	5 ID	6 Sample label	7 Depth sed [m]	8 Position	9 Deposit type	10 Quantity	11 Size	12 Substrate	13 Sediment	14 Comment	15 Description	16 File name	17 URL image
70-506	0.6098	-86.0998	-2710	70-506-1-11,115-1	70-506-1-11,115	1.150	In sediment	Mn micronodule	Few			Ooze	Yellow-gray siliceous nannofossil ooze (Upper Pleistocene)	5.0 % Mn micronodules (Site 506, Core 1, Cored Interval: 0.0-1.5 m, page 52)
70-506	0.6098	-86.0998	-2710	70-506-1-1,145-147-1	70-506-1-1,145-147	1.460	Buried	Mn crust	Several	Up to 2.0 cm		Ooze	Yellow-gray siliceous nannofossil ooze (Upper Pleistocene)	Greenish black to grayish black (N2) Fe-Mn crustal material, up to 2 cm in diameter, fragmented (nontronite and todorokite) (Site 506, Core 1, Cored Interval: 0.0-1.5 m, page 52)
70-506	0.6098	-86.0998	-2710	70-506-3-1,23-1	70-506-3-1,23	6.130	Buried	Mn crust	1	Fragment		Ooze	Greenish gray forminifer nannofossil ooze (Upper Pleistocene)	Dark gray to greenish black hydrothermal material , 1-2 cm in size (Todorokite) (Site 506, Core 3, Cored Interval: 5.9-10.3 m, page 53)
70-506	0.6098	-86.0998	-2710	70-506-6-2,39-41-1	70-506-6-2,39-41	21.000	In sediment	Mn micronodule	Several			Ooze	Greenish gray foraminifer nannofossil ooze (Upper Pleistocene)	Mn micronodules (Site 506, Core 6, Cored Interval: 19.1-23.5 m, page 54)
70-506B	0.6102	-86.0913	-2711	70-506B-1-1,22-1	70-506B-1-1,22	0.220	In sediment	Mn micronodule	Few			Ooze	Dusky yellow pelagic diatomaceous nannofossil ooze (Upper Pleistocene)	5.0 % Mn micronodules (Site 506B, Core 1, Cored Interval: 0.0-1.5 m, page 56)
70-506B	0.6102	-86.0913	-2711	70-506B-2-1,11-1	70-506B-2-1,11	1.610	In sediment	Mn micronodule	Few			Ooze	Variegated foraminifer diatomaceous nannofossil ooze (Upper Pleistocene)	5.0 % Mn micronodules (Site 506B, Core 2, Cored Interval: 1.5-5.9 m, page 56)
70-506B	0.6102	-86.0913	-2711	70-506B-4-2,105-1	70-506B-4-2,105	12.850	Buried	Mn coating	1	Large	Pebble	Ooze	Greenish gray foraminifer clayey nannofossil ooze (Upper Pleistocene)	Large Mn oxide pebble (Site 506B, Core 4, Cored Interval: 10.3-14.7 m, page 57)
70-506B	0.6102	-86.0913	-2711	70-506B-4-2,140-1	70-506B-4-2,140	13.150	Buried	Mn coating	1	Large	Pebble	Ooze	Greenish gray foraminifer clayey nannofossil ooze (Upper Pleistocene)	Large Mn oxide pebble (Site 506B, Core 4, Cored Interval: 10.3-14.7 m, page 57)
70-506B	0.6102	-86.0913	-2711	70-506B-5-21,107-1	70-506B-5-21,107	19.270	In sediment	Mn micronodule	Several			Ooze	Greenish gray foraminifer nannofossil ooze (Upper Pleistocene)	10.0 % Mn micronodules (Site 506B, Core 5, Cored Interval: 14.7-18.2 m, page 58)
70-506C	0.6077	-86.0913	-2710	70-506C-1-1,19-1	70-506C-1-1,19	0.190	In sediment	Mn micronodule	Few			Ooze	Brownish gray diatomaceous foram nannofossil ooze (Upper Pleistocene)	5.0 % Mn micronodules (Site 506C, Core 1, Cored Interval: 0.0-3.5 m, page 59)
70-506C	0.6077	-86.0913	-2710	70-506C-2-1,39-1	70-506C-2-1,39	3.890	In sediment	Mn micronodule	Many			Clay	Greenish black to brownish black granular hydrothermal clay (Upper Pleistocene)	80.0 % Mn micronodules (Site 506C, Core 2, Cored Interval: 3.5-7.9 m, page 59)	Fig6-70-506C.jpg	Fig6-70-506C.jpg
70-506C	0.6077	-86.0913	-2710	70-506C-2-1,42-44-1	70-506C-2-1,42-44	3.930	In sediment	Mn rich layer	1			Clay	Greenish black to brownish black granular hydrothermal clay (Upper Pleistocene)	Mn rich layer (34.97% MnO2) (Site 506C, Core 2, Cored Interval: 3.5-7.9 m, page 59)
70-506C	0.6077	-86.0913	-2710	70-506C-2-1, 67-69-1	70-506C-2-1, 67-69	4.180	Buried	Mn crust	Several	Up to 2.0 cm		Clay	Greenish black to brownish black granular hydrothermal clay (Upper Pleistocene)	The Mn-oxide fragments are angular and commonly elongate, 1 mm to 2 cm in diameter, and predominantly grayish black (N2) in color (Site 506C, Core 2, Cored Interval: 3.5-7.9 m, page 59)
70-506C	0.6077	-86.0913	-2710	70-506C-2-1,100-102-1	70-506C-2-1,100-102	4.560	In sediment	Mn rich layer	1			Clay	Greenish black to brownish black granular hydrothermal clay (Upper Pleistocene)	Mn rich layer (23.81% Mn O2) (Site 506C, Core 2, Cored Interval: 3.5-7.9 m, page 59)
70-506C	0.6077	-86.0913	-2710	70-506C-2-11,128-1	70-506C-2-11,128	4.780	In sediment	Mn micronodule	Several			Clay	Greenish black to brownish black granular hydrothermal clay (Upper Pleistocene)	10.0 % Mn micronodules (Site 506C, Core 2, Cored Interval: 3.5-7.9 m, page 59)
70-506C	0.6077	-86.0913	-2710	70-506C-3-1, 0-150-1	70-506C-3-1, 0-150	8.650	In sediment	Mn micronodule	Several	0.05 cm		Clay	Greenish black to brownish black granular hydrothermal clay (Upper Pleistocene)	Fe-Mn micronodules (500 microns) (Site 506C, Core 3, Cored Interval: 7.9-12.3 m, page 60)
70-506C	0.6077	-86.0913	-2710	506C-3-2,0-150-1	506C-3-2,0-150	10.150	In sediment	Mn micronodule	Many			Ooze	Foraminifer clayey nannofossil ooze with pale-green to olive green smectite (Upper Pleistocene)	Abundant, 20% Fe-Mn micronodule fragments. The micronodules are essentially made up of manganese oxides coating carbonate organism debris. (Site 506C, Core 3, Cored Interval: 7.9-12.3 m, page 60)
70-506C	0.6077	-86.0913	-2710	70-506C-4-3,53-57-1	70-506C-4-3,53-57	15.850	In sediment	Mn micronodule	Several		Core; shell	Ooze	Variegated foraminifer nannofossil ooze (Upper Pleistocene)	Manganese is present as micronodules and debris >2 µm. The micronodules are essentially made up of manganese oxides coating carbonate organism debris. (Site 506C, Core 4, Cored Interval: 12.3-16.7 m, page 60)
70-507C	0.5667	-86.0900	-2710	70-507C-1-1,3-1	70-507C-1-1,3	0.030	In sediment	Mn micronodule	Few			Ooze	Light to medium green siliceous nannofossil ooze	5.0 % Mn micronodules (Site 507C, Core 1, Cored Interval: 0.0-8.5 m, page 93)
70-507D	0.5667	-86.0900	-2689	70-507D-1-1,7-9-1	70-507D-1-1,7-9	0.070	Buried	Mn crust	1	Fragment		Ooze	Variegated siliceous foraminifer nannofossil ooze (Upper Pleistocene)	Mn crust fragment, essentially Todorokite. (Site 507D, Core 1, Cored Interval: 0.1-1.0 m, page 94)
70-507D	0.5667	-86.0900	-2689	70-507D-1-1,11-1	70-507D-1-1,11	0.110	In sediment	Mn micronodule	Many			Ooze	Variegated siliceous foraminifer nannofossil ooze (Upper Pleistocene)	15.0 % Mn micronodules (Site 507D, Core 1, Cored Interval: 0.1-1.0 m, page 94)
70-507D	0.5667	-86.0900	-2689	70-507D-1-1,14-20-1	70-507D-1-1,14-20	0.170	Buried	Mn crust	Several	Up to 5.0 cm		Ooze	Brown siliceous foraminifer nannofossil ooze (Upper Pleistocene)	Mn crust fragments up to 5.0 cm, flat or elongated as worm tubes (Site 509D, Core 1, Cored Interval: 0.1-1.0 m, page 94)	Fig6-70-507D.jpg	Fig6-70-507D.jpg
70-507D	0.5667	-86.0900	-2689	70-507D-1-1,56-1	70-507D-1-1,56	0.560	In sediment	Mn micronodule	Few			Ooze	Variegated siliceous foraminifer nannofossil ooze (Upper Pleistocene)	5.0 % Mn micronodules (Site 507D, Core 1, Cored Interval: 0.1-1.0 m, page 94)
70-507D	0.5667	-86.0900	-2689	70-507D-2-1,2-4-1	70-507D-2-1,2-4	1.030	Buried	Mn crust	Several	Up to 14.0 cm		Ooze	Moderate brown pelagic ooze (Upper Pleistocene)	Granular particles of brownish black Mn-oxide crusts (0-14 cm) (Site 507D, Core 2, Cored Interval: 1.0-5.4 m, page 94)
70-507D	0.5667	-86.0900	-2689	70-507D-6-1,12-22-1	70-507D-6-1,12-22	18.650	In sediment	Mn micronodule	Few			Clay	Hydrothermal sediment formed of yellow green to brown granular smectite with calcite (Upper Pleistocene)	5% Fe-Mn micronodule fragments, fish debris and sponge spicules (Site 507D, Core 6, Cored Interval: 18.6-23.0 m, page 96)
70-507D	0.5667	-86.0900	-2689	70-507D-7-1,16-21-1	70-507D-7-1,16-21	23.180	In sediment	Mn micronodule	Many			Clay	Hydrothermal sediment formed of dark olive green granular smectite (Upper Pleistocene)	Abundant, 10% Fe-Mn micronodule fragments with brown oxide grains, scarce sponge spicules and fish debris. Mn micronodules as fillings of carbonate organisms (Site 507D, Core 7, Cored Interval: 23.0-27.4 m, page 96)
70-507F	0.5667	-86.0900	-2695	70-507F-1-1,8-1	70-507F-1-1,8	0.080	In sediment	Mn micronodule	Few			Ooze	Variegated siliceous foram-nanno ooze (Upper Pleistocene)	5.0 % Mn micronodules (Site 507F, Core 1, Cored Interval: 0.0-2.4 m, page 99)
70-507F	0.5667	-86.0900	-2695	70-507F-2-11,115-1	70-507F-2-11,115	3.550	In sediment	Mn micronodule	Few			Ooze	Green to light olive foram siliceous nannofossil ooze (Upper Pleistocene)	5.0 % Mn micronodules (Site 507F, Core 2, Cored Interval: 2.4-6.8 m, page 99)
70-509	0.5890	-86.1315	-2677	70-509-1-1,30-1	70-509-1-1,30	0.300	In sediment	Mn micronodule	Few			Ooze	Very dark grayish brown siliceous nannofossil ooze (Upper Pleistocene)	5.0 % Mn micronodules (Site 509, Core 1, Cored Interval: 0.0-1.0 m, page 149)
70-509	0.5890	-86.1315	-2677	70-509-5-2,88-1	70-509-5-2,88	16.580	In sediment	Mn micronodule	Many			Ooze	Greenish gray siliceous foraminifer nannofossil ooze (Upper Pleistocene)	15.0 % Mn micronodules (Site 509, Core 5, Cored Interval: 14.2-18.6 m, page 151)
70-509B	0.5888	-86.1322	-2687	70-509B-1-11,112-1	70-509B-1-11,112	1.120	In sediment	Mn micronodule	Many			Clay	Fe-Mn hydrothermal sediment interbedded with pelagic ooze (Upper Pleistocene)	90.0 % Mn micronodules (Site 509B, Core 1, Cored Interval: 0.0-3.0 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-1-11,132-1	70-509B-1-11,132	1.320	In sediment	Mn micronodule	Many			Ooze	Mixed brownish black siliceous nanno ooze with Fe-Mn hydrothermal sediment (Upper Pleistocene)	35.0 % Mn micronodules (Site 509B, Core 1, Cored Interval: 0.0-3.0 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-1-1,133-135-1	70-509B-1-1,133-135	1.340	Buried	Mn crust	Several	Up to 2.0x2.0x0.5 cm		Ooze	Pelagic ooze	Horizontal plates of Mn crust, up to 2.0_2.0_ 0.5 cm in size. Made of todorokite with very little insoluble residue (Site 509B, Core 1, Cored Interval: 0.0-3.0 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-1-2,54-56-1	70-509B-1-2,54-56	2.050	Buried	Mn crust	Many	Fragment		Clay	Fe-Mn hydrothermal sediment (Upper Pleistocene)	A 1.4 m Mn rich layer (58.36 % MnO2) intermixed with Mn-oxide fragments. (Site 509B, Core 1, Cored Interval: 0.0-3.0 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-1-2,85-90-1	70-509B-1-2,85-90	2.350	Buried	Mn crust	Several	Fragment		Clay	Fe-Mn hydrothermal sediment (Upper Pleistocene)	Mn crust fragments (Site 509B, Core 1, Cored Interval: 0.0-3.0 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-1-2,105-106-1	70-509B-1-2,105-106	2.550	Buried	Mn crust	1	0.25 cm thick		Clay	Fe-Mn hydrothermal sediment (Upper Pleistocene)	Mn crust as a 2 to 2.5-mm thick deposit made of todorokite with very little insoluble residue. (Site 509B, Core 1, Cored Interval: 0.0-3.0 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-1-21,135-1	70-509B-1-21,135	2.850	In sediment	Mn micronodule	Few			Clay	Granular dark greenish clay (Upper Pleistocene)	5.0 % Mn micronodules (Site 509B, Core 1, Cored Interval: 0.0-3.0 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-2-1,7-1	70-509B-2-1,7	3.070	In sediment	Mn micronodule	Few			Ooze	Dark olive brown siliceous nanno ooze interbedded with dark Mn crust fragments (Upper Pleistocene)	5.0 % Mn micronodules (Site 509B, Core 2, Cored Interval: 3.0-7.4 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-2-1,12-13-1	70-509B-2-1,12-13	3.110	Buried	Mn crust	1	0.3 cm thick		Ooze	Dark olive brown siliceous nanno ooze interbedded with dark Mn crust fragments (Upper Pleistocene)	A small plate Mn crust, 2 to 3 mm thick, made of todorokite, with a significant amount of insoluble residue (Site 509B, Core 2, Cored Interval: 3.0-7.4 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-2-1,22-25-1	70-509B-2-1,22-25	3.230	Buried	Mn crust	1	0.4 cm thick		Ooze	Dark olive brown siliceous nanno ooze interbedded with dark Mn crust fragments (Upper Pleistocene)	A small plate Mn crust, 3 to 4 mm thick. (Site 509B, Core 2, Cored Interval: 3.0-7.4 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-2-1,44-45-1	70-509B-2-1,44-45	3.445	Buried	Mn crust	1	0.13 cm thick		Ooze	Dark olive brown siliceous nanno ooze interbedded with dark Mn crust fragments (Upper Pleistocene)	A plate Mn crust, about 1.3 mm thick, characterized by the presence of iron and an insoluble fraction. (Site 509B, Core 2, Cored Interval: 3.0-7.4 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-2-1,56-1	70-509B-2-1,56	3.560	In sediment	Mn micronodule	Several			Clay	Olive-green clay interbedded with dark Mn crust fragments (Upper Pleistocene)	10.0 % Mn micronodules (Site 509B, Core 2, Cored Interval: 3.0-7.4 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-2-1,98-100-1	70-509B-2-1,98-100	3.990	Buried	Mn crust	Several	Up to 2.0x2.0x0.5 cm		Clay	Olive-green clay interbedded with dark Mn crust fragments (Upper Pleistocene)	Horizontal plates of Mn crust, up to 2.0_2.0_0.5 cm in size (Site 509B, Core 2, Cored Interval: 3.0-7.4 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-2-3,35-1	70-509B-2-3,35	6.350	In sediment	Mn micronodule	Many			Clay	Olive-green clay interbedded with dark Mn crust fragments (Upper Pleistocene)	50.0 % Mn micronodules (Site 509B, Core 2, Cored Interval: 3.0-7.4 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-2-3,35-2	*	6.350	Buried	Mn nodule	Several	Up to 3.0x2.0x2.0 cm	Core; consolidated sediment	Clay	Olive-green clay interbedded with dark Mn crust fragments (Upper Pleistocene)	Mn nodules up to 3.0_2.0_2.0 cm in size, consisting of Mn oxide fragments and green clay granules (Site 509B, Core 2, Cored Interval: 3.0-7.4 m, page 153)
70-509B	0.5888	-86.1322	-2687	70-509B-3-1,20-1	70-509B-3-1,20	7.600	Buried	Mn crust	Several	Fragment		Ooze	Greenish black granular siliceous foram nanno ooze (Upper Pleistocene)	Black Mn-oxide crust fragments (Site 509B, Core 3, Cored Interval: 7.4-11.8 m, page 154)
70-509B	0.5888	-86.1322	-2687	70-509B-3-1,57-1	70-509B-3-1,57	7.970	In sediment	Mn micronodule	Many			Ooze	Greenish black granular siliceous foram nanno ooze (Upper Pleistocene)	10.0 % Mn micronodules (Site 509B, Core 3, Cored Interval: 7.4-11.8 m, page 154)
70-509B	0.5888	-86.1322	-2687	70-509B-3-2,75-1	70-509B-3-2,75	9.650	In sediment	Mn micronodule	Many			Ooze	Pelagic ooze (Upper Pleistocene)	20.0 % Mn micronodules (Site 509B, Core 3, Cored Interval: 7.4-11.8 m, page 154)
70-509B	0.5888	-86.1322	-2687	70-509B-4-1,40-1	70-509B-4-1,40	12.200	Buried	Mn crust	Several	Fragment		Clay	Greenish black to black granular clay (Upper Pleistocene)	Mn crust fragments which could be contamination from falling sediment in the tube (Site 509B, Core 4, Cored Interval: 11.8-16.2 m, page 154)
70-509B	0.5888	-86.1322	-2687	70-509B-5-2,79-1	70-509B-5-2,79	18.490	In sediment	Mn micronodule	Many			Ooze	Hydrothermal sediment mixed with light greenish gray foraminifer nannofossil ooze (Upper Pleistocene)	50.0 % Mn micronodules (Site 509B, Core 5, Cored Interval: 11.8-16.2 m, page 155)