Citation:

V Moana Wave, Honolulu to San Diego, 17 July - 10 August 1974. Hawaii Institute of Geophysics, University of Hawaii, Technical Report, 9, 194 pp, 08025001_Indexed.pdf

Name: Annotated record of the detailed examination of Mn deposits from R/V Moana Wave Cruise Mn-74-01 stations
Published: 1974
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Cruise MN-74-01 of the R/V Moana Wave was the first part of the field work of the NSF-IDOE Inter-University Ferromanganese Research Program in 1974. This program was designed to investigate the origin, growth, and distribution of copper/nickel-rich manganese nodules in the Pacific Ocean. The field effort was designed to satisfy sample requirements of the 15 principal investigators, while increasing general knowledge of the copper/nickel-rich nodule deposits of the equatorial Pacific. This report is the first of a series of cruise reports designed to assist sample requests for documented nodules, sediment, and water samples so the laboratory results can be realistically compared and related to the environment of nodule growth.

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):

NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS)

Coverage:

Median Latitude: 12.007927 * Median Longitude: -144.102967 * South-bound Latitude: 2.916667 * West-bound Longitude: -154.083000 * North-bound Latitude: 25.280333 * East-bound Longitude: -126.350667

Date/Time Start: 1974-07-20T00:00:00 * Date/Time End: 1974-08-08T00:00:00

Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 0.35 m

Event(s):

MW7401-01G01 (Mn-74-01-001-FFG-001) * Latitude: 13.002000 * Longitude: -154.083000 * Date/Time: 1974-07-20T00:00:00 * Elevation: -5413.0 m * Location: Pacific Ocean * Campaign: (Mn-74-01 IODE) * Basis: Moana Wave * Method/Device: Free-fall grab (FFGR) * Comment: Institute: HIG (Hawaii Institute of Geophysics)

MW7401-01G02 (Mn-74-01-001-FFG-002) * Latitude: 13.002000 * Longitude: -154.083000 * Date/Time: 1974-07-20T00:00:00 * Elevation: -5413.0 m * Location: Pacific Ocean * Campaign: (Mn-74-01 IODE) * Basis: Moana Wave * Method/Device: Free-fall grab (FFGR) * Comment: Institute: HIG (Hawaii Institute of Geophysics)

MW7401-01G03 (Mn-74-01-001-FFG-003) * Latitude: 13.002000 * Longitude: -154.083000 * Date/Time: 1974-07-20T00:00:00 * Elevation: -5413.0 m * Location: Pacific Ocean * Campaign: (Mn-74-01 IODE) * Basis: Moana Wave * Method/Device: Free-fall grab (FFGR) * Comment: Institute: HIG (Hawaii Institute of Geophysics)

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	Event label	Event		Andrews, James E
2	Date/Time of event	Date/Time		Andrews, James E
3	Latitude of event	Latitude		Andrews, James E
4	Longitude of event	Longitude		Andrews, James E
5	Elevation of event	Elevation	m	Andrews, James E
6	Sample ID	Sample ID		Andrews, James E
7	DEPTH, sediment/rock	Depth sed	m	Andrews, James E	Geocode
8	Position	Position		Andrews, James E
9	Deposit type	Deposit type		Andrews, James E
10	Quantity of deposit	Quantity		Andrews, James E
11	Number	n	#	Andrews, James E	nodules, size smaller than 2 cm
12	Number	n	#	Andrews, James E	nodules, size between 2 cm and 4 cm
13	Number	n	#	Andrews, James E	nodules, size between 4 cm and 6 cm
14	Number	n	#	Andrews, James E	nodules, size between 6 cm and 8 cm
15	Number	n	#	Andrews, James E	nodules, size larger than 8 cm
16	Mass	Mass	kg	Andrews, James E	nodules, size smaller than 2 cm
17	Mass	Mass	kg	Andrews, James E	nodules, size between 2 cm and 4 cm
18	Mass	Mass	kg	Andrews, James E	nodules, size between 4 cm and 6 cm
19	Mass	Mass	kg	Andrews, James E	nodules, size between 6 cm and 8 cm
20	Mass	Mass	kg	Andrews, James E	nodules, size larger than 8 cm
21	Nodules, mass abundance	Nodules	kg/m²	Andrews, James E
22	Substrate type	Substrate		Andrews, James E
23	Shape	Shape		Andrews, James E
24	Surface description	Surf descr		Andrews, James E	Structure of outside surface of nodules
25	Sediment type	Sediment		Andrews, James E
26	Comment	Comment		Andrews, James E
27	Description	Description		Andrews, James E

License:

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

Size:

845 data points

Data

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

1 Event	2 Date/Time	3 Latitude	4 Longitude	5 Elevation [m]	6 Sample ID	7 Depth sed [m]	8 Position	9 Deposit type	10 Quantity	11 n [#] (nodules, size smaller than 2 cm)	12 n [#] (nodules, size between 2 cm an...)	13 n [#] (nodules, size between 4 cm an...)	14 n [#] (nodules, size between 6 cm an...)	15 n [#] (nodules, size larger than 8 cm)	16 Mass [kg] (nodules, size smaller than 2 cm)	17 Mass [kg] (nodules, size between 2 cm an...)	18 Mass [kg] (nodules, size between 4 cm an...)	19 Mass [kg] (nodules, size between 6 cm an...)	20 Mass [kg] (nodules, size larger than 8 cm)	21 Nodules [kg/m²]	22 Substrate	23 Shape	24 Surf descr (Structure of outside surface ...)	25 Sediment	26 Comment	27 Description
MW7401-01G01	1974-07-20	13.0020	-154.0830	-5413	MW7401-01G01-1	0.00	Surface	Mn nodule	4	0	4	0	0	0		0.220				2.80		Discoidal. Smallest & largest are squared-off ellipsoidal dlscoids; other two approximate half-discoids.	Granular. Equatorial belt slightly more coarsely granular. Mammilliation <1mm.	Clay	Brown silty clay	Brown to dark brown. Few worm tubes visible on surfaces.
MW7401-01G02	1974-07-20	13.0020	-154.0830	-5413	MW7401-01G02-1	0.00	Surface	Mn nodule	3	0	1	2	0	0		0.050	0.27			4.00		Discoidal. Largest is ellipsoidal discoid; intermediate is reniform; smallest is half-discoid. All with incipient lobes. Bottoms somewhat flattened.	Upper and lower surface granular. Equatorial belt slightly more coarsely granular. Mammilliation <1 to 20 mm (larger knobs can be considered as incipient lobes)	Clay	Brown silty clay	Very dark brown to black. Smallest has finely-dendritic adhering-sediment or worm tube pattern on apparent lower surface. Other two have worm tubes and organic fibers, esp. in lower equatorial region.
MW7401-01G03	1974-07-20	13.0020	-154.0830	-5413	MW7401-01G03-1	0.00	Surface	Mn nodule	2	0	1	1	0	0		0.050	0.09			1.80		Discoidal. Both approximate half-discoidals. Both with lobes. Bottoms somewhat flattened.	Upper and lower surface granular. Equatorial belt slightly more coarsely granular. Mammilliation <1 mm (some equatorial granule clusters assume an incipient botryoid form: up to 5 mm)	Clay	Brown silty clay	Very dark brown. Many worm tubes and organic fibers present on nodule surfaces, esp. in equatorial region.
MW7401-02G04	1974-07-21	11.3670	-153.6170	-5190	MW7401-02G04-1	0.00	Surface	Mn nodule	1	0	0	1	0	0			0.15			2.20		Discoidal. Approaches tabular-discoidal (hamburger); with incipient lobes; two small (VL/2 cm) satellite protrusions on upper (?) surface.	Upper and lower surface granular. Lower (?) surface has slightly higher relief than upper (?) surface. Equatorial belt has granular texture superimposed on botryoidal (knobby) surface. Mammilliation <1 mm (granular), 2-5 mm (Knobby)	Silt	Brown clayey silt	Dark brown to black. A few organic tubes present on nodule surface, esp. in equatorial region.
MW7401-02G05	1974-07-21	11.3670	-153.6170	-5190	MW7401-02G05-1	0.00	Surface	Mn nodule	5	5	0	0	0	0	0.030					0.20	Core; foreign or shark's tooth	Ellipsoidal (except partially overgrown shark's tooth). Vaguely to distinctly faceted. Largest nodule is a coalespheroid.	Granular. Top and bottom not readily distinguishable, but part of surface seems to be free of worm tubes. Mammilliation: <= 1mm	Silt	Brown clayey silt	Very dark brown. Worm tubes prominent on all nodules, esp. in saddles between lobes of coalespheroid. Only root of shark's tooth is Mn-encrusted; nuclei for other nodules probably not shark teeth.
MW7401-02G06	1974-07-21	11.3670	-153.6170	-5190	MW7401-02G06-1	0.00	Surface	Mn nodule	2	2	0	0	0	0	0.020					0.20		Spheroidal. Largest is flattened; smallest is vaguely faceted.	Granular. Top and bottom not readily distinguishable, but part of surface seems to be free of worm tubes. Mammilliation: <= 1mm	Silt	Brown clayey silt	Very dark brown to black. Worm tubes prominent on both nodules.
MW7401-03G07	1974-07-22	9.9830	-152.9500	-5000	MW7401-03G07-1	0.00	Surface	Mn nodule	43	27	16	0	0	0	0.050	0.450				6.20	Core; volcanics or shark's tooth	Wide variety. Largest is prolate ellipsoid; most larger nodules are modified ellipsoids with satellite protusions, some modified discoids, & two are platy. Most of smaller nodules are spheroidal. Some of all sizes are flattened.	Upper surface: Microgranular to granular and lower surface: granular to cavernous granular. Some larger nodules have distinguishable upper & lower surfaces granularity lower equatorial belts having highest granularity. Mammilliation: <= 1 mm	Clay	Brown silty clay (Red clay)	Very dark brown to black. Sample includes one incipient nodule (a 12 mm max. diam. ellipsoidal volcanic frag, with one-half of surface Mn-encrusted). Shark teeth nuclei or satellites with 4 smaller nodules. Worm tubes prominent on most nodules.
MW7401-03G09	1974-07-22	9.9830	-152.9500	-5000	MW7401-03G09-1	0.00	Surface	Mn nodule	23	7	12	3	1	0	0.020	0.200	0.13	0.10		5.60		Wide variety: Largest is platy tabular-discoid; most larger ones, ellipsoidal or discoidal; small ones (<1/2 cm max. diam.) spheroidal (but one is thin platy). Several large have satellite protrusions. Some botryoids can considered well-developed lobes.	Top: Smooth to granular, bottom: microgranular to granular. Top/bttom distinguished on some large nodules on which smooth to granular textures are superimposed on a botryoidal top side surface. Mammilliation: <= 1 mm (granular), 4-12 mm (botryoidal)	Clay	Brown silty clay (Red clay)	Very dark brown to black. Worm tubes prominent on most nodules. 0ne small tabular nodule may be a fragment, but it has worm on apparent fracture surface.
MW7401-04G10	1974-07-23	8.6633	-152.6300	-5100	MW7401-04G10-1	0.00	Surface	Mn nodule	1	1	0	0	0	0	0.010					0.10		Ellipsoidal and flattened.	Upper surface: Granular and lower surface: microgranular. Mammilliation: < 1 mm	Silt	Dark brown clayey silt	Brown to dark brown. Abundant worm tubes on lower (?) surface. Sample includes many clusters of organ pipes: white, twisted tubes, each tube about 1 mm in diameter and up to 1.5 cm long.
MW7401-04G11	1974-07-23	8.6633	-152.6300	-5100	MW7401-04G11-1	0.00	Surface	Mn nodule	6	6	0	0	0	0	0.020					0.20	Core; pumice or shark's tooth	Two are spheroidal, faceted and lobed. Two are ellipsoidal, flattened or prolate. One is platy tabular-discoidal, and one is a partly encrusted shark's tooth.	Microgranular to granular. Upper and lower surfaces not distinguishable. Mammilliation: < 1 mm	Silt	Dark brown clayey silt	Dark brown to very dark brown. Shark-tooth nodule has only tooth root encrusted with manganese.
MW7401-04G11	1974-07-23	8.6633	-152.6300	-5100	MW7401-04G11-2	0.00	Surface	Mn coating	1												Fragment; pumice			Silt	Dark brown clayey silt	Sample includes a 1.4 cm max. diameter partly encrusted subround weathered pumice frag.
MW7401-04G12	1974-07-23	8.6633	-152.6300	-5100	MW7401-04G12-1	0.00	Surface	Mn nodule	3	2	1	0	0	0	0.010	0.040				0.60		Discoidal. Largest is ellipsoidal discoid, intermediate consists of intergrown ellipsoid and spheroid, and smallest is tapered ellipsoid. Largest has partially developed lobes.	Top & bottom: microgranular to granular, not distinguished on small nodules, but on large nodule, lower surface seems to be free of worm tubes. On equatorial belt of largest, granule clusters approach a botryoidal aspect. Mammilliation: <= 1 mm	Silt	Dark brown clayey silt	Very dark brown to black. Worm tubes prominent on all 3 nodules.
MW7401-05B02	1974-07-25	2.9380	-150.9850	-4850	MW7401-05B02-1	0.35	Buried	Mn nodule	7	3	2	1	1	0	0.010	0.020	0.12	0.28				Largest is ellipsoidal, faceted. Next largest is polygonal and almost square. Three nodules, including the smallest, are discoidal ranging from thick and lobed to elongate tabular-discoidal. One is botryoidal. One of smaller nodules is also polygonal.	Microgranular to friable granular surface with often poor botryoids. Tops and bottoms similar. Smallest nodule is smooth botryoidal. Mammilliation: < 1 mm to about 1cm.	Clay	Red-brown carbonate clay	Very dark brown to black. Largest nodule fractured during removal from sediment; light yellow-brown clay on fracture surface. Nodule fragments 0.75 to 3.0 cm. Nodules probably mostly from 30-35 cm depth in core.
MW7401-05G14	1974-07-25	2.9167	-150.9750	-4710	MW7401-05G14-1	0.00	Surface	Mn nodule	3	3	0	0	0	0	0.010					0.10	Core; fish vertebra	Discoidal, tabular, and Mn-encrusted vertebra (?), respectively.	Microgranular to granular. Upper & lower surfaces cannot be distinguished. On discoidal nodule, granule clusters approximate a botryoidal form. Mammilliation: <1 mm	Clay	Red-brown carbonate clay	Very dark brown to black. Prominent worm tubes on discoidal and tabular nodules.
MW7401-05G15	1974-07-25	2.9383	-151.0100	-5025	MW7401-05G15-1	0.00	Surface	Mn nodule	23	0	23	0	0	0		0.450				10.00		Discoidal and ellipsoidal. Discoids range from thick (approx. flattened spheroids) to thin (approx. tabular-discoidal). Some ellipsoids reniform. All shapes, esp. ellipsoidals, have incipient to well-developed lobes. Few bottoms flattened.	Microgranular to granular. Upper and lower surfaces distinguishable only on a few larger nodules. Lower surfaces & equatorial belts have roughest surface textures. Mammilliation: <<1 mm	Clay	Red-brown carbonate clay	Dark brown to black. Only a few worm tubes are present.
MW7401-05G15	1974-07-25	2.9383	-151.0100	-5025	MW7401-05G15-2	0.00	Surface	Mn coating	33												Fragment; nodule			Clay	Red-brown carbonate clay	33 fragments all >1.0 cm max. diam. Several frags, obviously the result of sea-floor processes, as fracture surfaces are partly Mn-encrusted sometimes recemnted as whole nodules.
MW7401-06G16	1974-07-28	9.0470	-146.4570	-5150	MW7401-06G16-1	0.00	Surface	Mn nodule	11	7	1	2	1	0	0.040	0.050	0.14	0.12		4.40		Three largest (65, 57, 45 mm max. diam.) are discoidal; next two largest (38, 23 mm max. diam.) are ellipsoidal nearly discoid; next (20 mm) is discoidal; next (18 mm) is ellipsoidal; all smaller spheroidal. All with rough botryoidal surface.	Microgranular to granular on well-developed botryoid. Granular to coarsely granular on poorly developed ones. Largest botryoids on equatorial belt of larger nodules. Upper & lower surfaces distinguished. Mammilliation: <<1 mm to 1 cm on largest nodule.	Ooze	Clayey siliceous ooze	Very dark brown. Fairly abundant worm tubes and other organic remains, esp. in equatorial regions. Sample includes several pieces of poorly consolidated sediment, probably a clayey siliceous ooze, mottled beige and dark gray brown.
MW7401-06G17	1974-07-28	9.0500	-146.4870	-5180	MW7401-06G17-1	0.00	Surface	Mn nodule	88	64	22	2	0	0	0.100	0.450	0.15			8.60	Core; shark's tooth	Largest are discoidal or coalespheroidal, with some ellipsoidal. Intermediate are coalespheroidal or botryoidal; smallest mostly spheroidal. Most nodules have incipient to well-developed lobes. Many have satellite protrusions or agglutinated spheres.	Upper face: microgranular, lower face: granular on large nodules. Smaller nodules, more uniform texture. Granular textures superimposed on botryoidal surfaces of some larger nodules. Some equatorial belts coarsely granular. Mammilliation: <<1 mm to 18 mm.	Ooze	Clayey siliceous ooze	Very dark brown to black. Sample includes one rounded gray-brown pumice frag., 11 mn max. diam. Prominent worm tubes on many nodules. Shark tooth frag, embedded in shell like structure adhering to one small nodule.
MW7401-06G18	1974-07-28	9.0570	-146.5420	-5155	MW7401-06G18-1	0.00	Surface	Mn nodule	19	4	15	0	0	0	0.020	0.280				8.80	Core; pumice	Spheroidal (incl. the 3 nodules <1 cm max. diameter), discoidal, and ellipsoidal, with forms of some transitional between the 3 types. Some ellipsoidals approximate discoids or flattened spheroids.	Upper face: Granular to friable coarsely granular, lower face: Granular. Upper & lower surfaces distinguishable. Granular texture superimposed on botryoids on some nodules. Highest relief in equatorial belt. Mammilliation: <1 mm to 8 mm.	Ooze	Clayey siliceous ooze	Very dark brown to black. Prominent worm tubes on most nodules, particularly in crevasses.
MW7401-06G18	1974-07-28	9.0570	-146.5420	-5155	MW7401-06G18-2	0.00	Surface	Mn staining	1												Fragment; pumice			Ooze	Clayey siliceous ooze	Sample includes a few small frags of partly consolidated beige siliceous ooze, as well as one 9 mm max. diam. subround gray-brown pumice frag, partly Mn-stained.
MW7401-06G19	1974-07-28	9.0620	-146.5720	-5175	MW7401-06G19-1	0.00	Surface	Mn nodule	9	7	0	0	1	1	0.020			0.15	0.55	9.00	Core; shark's tooth	Two largest (10.7 & 7.4 cm) are discoidal. Next largest (2.3 cm) is botryoidal; 4 of smallest are spheroidal, one is ellipsoidal, and one is encrusted shark's tooth. Bottoms of large discoids more convex than tops, approximate mushroom discoids.	10.7 cm nodule surface, up: microgranular to botryoidal, bottom: granular on botryoidal. 7.4 cm nodule surface, up: granualr to coarsely granular on poor botryoids, bottom: granular on botryoidal. Upper & lower surfaces of others uniform both granular.	Ooze	Clayey siliceous ooze	Very dark brown to black. Worm tubes prominent on all nodules, but mostly restricted to equatorial belts of two largest nodules.
MW7401-06G19	1974-07-28	9.0620	-146.5720	-5175	MW7401-06G19-2	0.00	Surface	Mn staining	1												Fragment; volcanics			Ooze	Clayey siliceous ooze	Sample includes one 11 mm max. diam. rounded yellow-brown volcanic frag., partly Mn-stained.
MW7401-06G20	1974-07-28	8.8970	-146.4920	-5225	MW7401-06G20-1	0.00	Surface	Mn nodule	16	4	4	7	1	0	0.050	0.150	0.75	0.20		14.50		Most nodules are discoidal, with the remainder being ellipsoidal. Many discoids approximate flattened ellipsoidals. Several nodules have incipient to fairly well-developed lobes. Bottoms of most discoidals more convex than tops	Up: microgranular to granular on botryoids, bottom: granular, on some, superimposed on botryoids. Up/bottom easily distinguished on most larger nodules. Smaller nodules uniformly granular to microgranular surfaces. Mammilliation: <1 mm to 2.5 cm.	Ooze	Clayey siliceous ooze	Very dark brown to black. Prominent wormtubes & organic structures on most nodules, especially on equatorial belts.
MW7401-06G20	1974-07-28	8.8970	-146.4920	-5225	MW7401-06G20-2	0.00	Surface	Mn coating	1												Fragment; volcanics			Ooze	Clayey siliceous ooze	Sample includes one 16 mm max. diam. subround red-brown volcanic frag. almost completely stained or thinly encrusted with manganese.
MW7401-06G21	1974-07-28	8.9320	-146.4930	-5190	MW7401-06G21-1	0.00	Surface	Mn nodule	29	15	7	7	0	0	0.050	0.100	0.35			6.20		Most of larger nodules are discoidal, a few are ellipsoidal. Intermediate size (2-4 cm) mostly ellipsoidal. Smaller nodules primarily spheroidal. Most discoidals and ellipsoidals have incipient lobes.	Up: microgranular to granular, bottom: granular, on poor botryoids. Up/bottom distinguished on intermediate to large nodules with equatorial rough surface as granular texture on botryoids. Roughness less with size. Mammilliation: <1 mm to 0.5 cm.	Ooze	Clayey siliceous ooze	Very dark brown to black.
MW7401-06G21	1974-07-28	8.9320	-146.4930	-5190	MW7401-06G21-2	0.00	Surface	Mn staining	5												Fragment; pumice			Ooze	Clayey siliceous ooze	Sample includes 5 subangular to round volcanic frags., 9-19 mm max. diam., which are gray pumice and yellow-brown weathered pumice or basalt, unstained to nearly completely Mn-stained.
MW7401-06G22	1974-07-28	8.9580	-146.4920	-5205	MW7401-06G22-1	0.00	Surface	Mn nodule	9	5	4	0	0	0	0.030	0.120				1.90		Largest nodule is discoidal; next 4 largest are coalespheroidal or botryoidal; smallest 4 nodules are ellipsoidal. Several nodules or nodule segments have incipient to well-developed lobes.	Up: Microgranular to granular, bottom: granular sometimes on botryoids. Up/bottom different for large nodules. Smaller nodules more uniformly granular. Rough equatorial belts, granules superimposed on botryoids (knobs). Mammilliation: <1 mm to 1.0 cm	Ooze	Clayey siliceous ooze	Very dark brown to black. Worm tubes on all nodules, most prominent on smaller ones. Sample includes many small (<2 cm)frags, of poorly consolidated sediment, speckled and impregnated with manganese; the sediment is beige siliceous ooze.
MW7401-06G23	1974-07-28	8.9970	-146.4970	-5170	MW7401-06G23-1	0.00	Surface	Mn nodule	57	14	33	10	0	0	0.150	0.600	0.70			21.20		Largest nodules have irregular shapes, being polygonal or distorted ellipsoids or discoids; one largest is prolate ellipsoid. Most medium size (2.0-4.0 cm) are ellipsoidal or coalespheroidal, some are discoidal. Small nodules are discoidal or ellipsoidal.	Up: smooth to microgranular, sometimes superimposed on suppressed botryoids, bottom: granular, on superimposed on botryoids. Top/bottom distinguished in large-medium size nodules. Small nodules uniformly microgranular. Mammilliation: Â« 1 mm to about 1 cm	Ooze	Clayey siliceous ooze	Very dark brown.
MW7401-06G23	1974-07-28	8.9970	-146.4970	-5170	MW7401-06G23-2	0.00	Surface	Mn coating	33												Fragment; nodule			Ooze	Clayey siliceous ooze	33 nodule frags >0.5 cm. Includes nodules recently fractured on seafloor with fracture surfaces thinly re-encrusted. Septarian fracture pattern evident on surface.
MW7401-06G23	1974-07-28	8.9970	-146.4970	-5170	MW7401-06G23-3	0.00	Surface	Mn staining	6												Fragment; basalt			Ooze	Clayey siliceous ooze	6 frags, of basalt, 2.3 cm. max., Mn stained.
MW7401-06C05	1974-07-28	8.8667	-146.4400	-5250	MW7401-06C05-1	0.00	Surface	Mn nodule	1	1	0	0	0	0	0.015							Ellipsoidal. Faceted, appears to be lengthwise quadrant of ellipsoid.	Surface appears granular. Top and bottom not identifiable. Mammilliation: <1 mm	Ooze	Light brown clayey siliceous ooze	Nodule examined after it was frozen.
MW7401-06G24	1974-07-29	8.8667	-146.4400	-5250	MW7401-06G24-1	0.00	Surface	Mn nodule	26	4	14	8	0	0	0.030	0.530	0.55			13.90		Large and intermediate nodules mostly discoids, with a few coalespheroidal or ellipsoidal; small nodules, ellipsoidal or spheroidal. Most nodules have incipient lobes. One 5.3x4.8x3.1 cm discoid squared off on one end, fractured and healed on seafloor?.	Top: micro-granular to granular, bottom: friable granular sometimes superimposed of poorly developed botryoids. Top/bottom distinguished. Coarse texture in equatorial belt. Small nodules uniformly granular. Mammilliation: <1 mm to 1 cm	Ooze	Clayey siliceous ooze	Very dark brown to black. Worm tubes present, but not prominent, on most nodules.
MW7401-06G25	1974-07-29	8.9017	-146.4433	-5240	MW7401-06G25-1	0.00	Surface	Mn nodule	26	3	12	10	0	0	0.030	0.270	0.60			11.20		Most discoidal; some are coalespheroidal; and the smallest nodule is ellipsoidal. A few discoidals approximate flattened ellipsoids. Some discoidal outlines triangular. Top of largest nodule more convex than bottom.	Top: microgranular to granular, some on suppressed to well-developed botryoids, bottom: friable granular, some on poorly developed botryoids. Top/bottom distinguinshed. Medium to large discoidals have rough equatorial belt. Mammilliation: <1mm to 1 cm.	Ooze	Clayey siliceous ooze	Very dark brown to black. Only a few worm tubes are present.
MW7401-06G26	1974-07-29	8.9320	-146.4450	-5220	MW7401-06G26-1	0.00	Surface	Mn nodule	53	29	18	6	0	0	0.100	0.350	0.40			10.60	Core; shark's tooth	Most of larger nodules, Including the largest, are discoidal or coalespheroidal. Smaller nodules generally ellipsoidal or spheroidal. Several nodules of different types have agglutinated spherules. A few discoids have triangular or squared-off outlines	Top: microgranular to granular, bottom: granularÂ» on few superimposed on poorly developed botryoids. Top/bottom distinguished on larger nodules. Highest relief in equatorial zone. Smaller nodules more uniform. Mammilliation: <1 mm to 1 cm.	Ooze	Clayey siliceous ooze	Very dark brown to black. Sample includes a couple of small frags, of organ-pipe to spaghetti growth. Very few worm tubes present. Two small coalespheroids have a shark-tooth core.
MW7401-06G27	1974-07-29	8.8400	-146.4367	-5175	MW7401-06G27-1	0.00	Surface	Mn nodule	2	0	0	1	1	0			0.05	0.20		3.10		Larger one discoidal flattened on one side, as if part had been fractured off, and fracture surface overgrown; bottom slightly more convex than top. Smaller one ellipsoidal.	Top: granular, bottom: coarsely friable, granular both superimposed on poorly developed botryoids. Top/bottom easily distinguished. Relief highest equatorial belt with well developed botyoids. Mammilliation: <1mm to 1 cm.	Ooze	Clayey siliceous ooze	Dark brown to black. A few worm tubes are present, mostly in equatorial belt. Sample also includes several lumps (total weight about 0.025 kg) of poorly consolidated sediment, mottled beige, light brown and gray brown clayey siliceous ooze.
MW7401-06C07	1974-07-29	8.8400	-146.4367	-5175	MW7401-06C07-1	0.00	Surface	Mn nodule	1	0	1	0	0	0		0.040						Coalespheroidal. Ellipsoidal segment is lobed.	Top: microgranular to granular, bottom: granular. Mammilliation: <1 mm	Ooze	Mottled beige/light brown/gray brown clayey siliceous ooze
MW7401-07G28	1974-07-30	10.0120	-143.3120	-5090	MW7401-07G28-1	0.00	Surface	Mn nodule	19	12	7	0	0	0	0.030	0.070				1.20	Core; shark's tooth	Wide variety: medium-size discoids, more abundant but smaller ellipsoids & spheroids, two medium-size coalespheroids, small tabular nodules & a partially encrusted shark tooth. Smallest ellipsoids irregularly faceted. Larger ellipsoidals flattened.	Top: Granular to coarsely granular or botryoidal, bottom: granular to coarsely granular. Top/bottom distingished for large nodules. Highest relief in equatorial belts with botryoidal aspect. Small nodules more uniform. Mammilliation: < l mm to about 3 mm.	Ooze	Light brown clayey siliceous ooze	Dark brown to black. Worm tubes apparent on many nodules.
MW7401-07G28	1974-07-30	10.0120	-143.3120	-5090	MW7401-07G28-2	0.00	Surface	Mn staining													Fragment; volcanics			Ooze	Light brown clayey siliceous ooze	Small subangular volcanic frag., vaguely Mn-stained, adhering to underside of 2-poly coalespheroidal.
MW7401-07G29	1974-07-30	10.0100	-143.3170	-5075	MW7401-07G29-1	0.00	Surface	Mn nodule	6	0	0	1	5	0			0.15	1.30		18.10		Discoidal. Bottoms slightly more convex than tops. Smallest approximates a flattened spheroid. One of largest has irregular satellite growth on upper surface.	Top: microgranular to granular superimposed on botryoids, bottom: granular superimposed on poorly developed botryoids. Top/bttom distinguished. Exception smallest, equatorial belts with highest relief with large botryoids. Mammilliation: <1 mm to 2.5 cm.	Ooze	Light brown clayey siliceous ooze	Very dark brown to black. Very few worm tubes present.
MW7401-07G30	1974-07-30	10.0083	-143.3200	-5075	MW7401-07G30-1	0.00	Surface	Mn nodule	7	1	0	1	4	1	0.010		0.06	1.18	0.45	21.20		5 large are discoidal; next largest (6.2 cm) ellipsoidal; smallest is coalespheroidal. Largest is half-discoidal, as if broken with fracture surface re-encrusted. Two of large discoidals are of mushroom variety. The ellipsoidal nodule is prolate.	Top: granular on botryoids, bottom: granular superimposed on well-developed botryoids. Top/bottom distinguished on all nodules. Highest relief in equatorial belt Texture of two smallest nodules has rough aspect. Mammilliation: <1 mm to >2 cm.	Ooze	Light brown clayey siliceous ooze	Very dark brown to black. Sample includes one 25 mm long bone segment, altered to a gray pumice-like texture. Worm tubes present but not abundant.
MW7401-08G32	1974-08-01	11.0000	-140.0000	-4850	MW7401-08G32-1	0.00	Surface	Mn nodule	5	1	0	0	3	1	0.005			0.80	0.40	15.00		4 large discoidal; smallest is spheroidal. Three largest discoids are thick, approximating flattened spheroids or ellipsoids; all three also have a mushroom aspect. Third largest discoidal has coalespheroidal like satellite growth on upper surface.	Top: granular on botryoids, bottom: granular to coarsely granular on botryoids. Top/bottom distinguished except small nodules. Equatorial belt somewhat unmarked except more granular. Smallest nodule coarsely granular. Mammilliation: <1 mm to 2 cm.	Ooze	Clayey siliceous ooze	Dark brown to black. Sample includes one 17 mm max. diam. subround dark-gray pumice frag. Worm tubes and other evidence of organic activity (including organ-pipe frags.) present but not prominent.
MW7401-08G33	1974-08-01	11.0133	-139.9850	-4900	MW7401-08G33-1	0.00	Surface	Mn nodule	1	0	0	0	0	1					0.45	5.60		Discoidal. Unusual, is mushroom variety, but top surface, rather than bottom, is stem.	Top: microgranular to granular on botryoids, bottom: granular on botryoids. Top/bottom different; nodule may have been more than one half buried in sediment. Equatorial belt has highest relief, granule clusters botryoids. MAmmilliation: 1 mm to 2.5 cm.	Ooze	Clayey siliceous ooze	Dark brown to black. 17 fragments may be spherule formerly agglutinated to under surface of nodule. Worm tubes present but not abundant.
MW7401-08D01	1974-08-01	11.1167	-140.0000	-4810	MW7401-08D01-1	0.00	Surface	Mn nodule	4	4	0	0	0	0	0.100							Largest is apparently coalespheroidal, as is one other, one is spheroidal, and one is discoidal with agglutinated spherule. Largest coalespheroid consists of two agglutinated irregular ellipsoids with a sediment cavity at the area of joining.	Top/bottom not very apparent. Discoidal has granules on botryoids on top, coarse granule clusters on bottom. Spheroidal has granule clusters & botryoids with granular texture. Coalespheroidals with coarse small botryoids. Mammilliation; <1 mm to 1 cm.	Ooze	Clayey siliceous ooze	Very dark brown to black. Spheroidal nodule has partly lithified sediment on one surface (white when dry) and fresher sediment (light brown) on parts of other surface. Worm tubes present on most nodules & fragments. Fragments from 2 nodules.
MW7401-09G34	1974-08-03	15.1317	-136.3617	-4890	MW7401-09G34-1	0.00	Surface	Mn nodule	2	1	0	1	0	0	0.002		0.15			1.90		Larger is discoidal, smaller is tabular. Discoidal approximates a flattened ellipsoid with a mushroom aspect. Tabular nodule is squared-off in outline and very thin (being only 1 mm thick), Discoidal has incipient lobe development.	Top: granular on suppressed botryoids, bottom: microgranular to granular. Top/bottom doubtful. Discoid may have been mostly buried. Has highest relief in equatorial belt Small tabular nodule uniformly granular. MAmmilliation: <1mm to 1 cm.	Ooze	Clayey siliceous ooze	Very dark brown to black. Small tabular nodule may represent fragment of upper (?) surface of larger nodule that was fractured on the seafloor. Worm tubes present, but rare.
MW7401-09G36	1974-08-03	15.1320	-136.3620	-4885	MW7401-09G36-1	0.00	Surface	Mn nodule	2	1	1	0	0	0	0.005	0.025				3.10		Largest is discoidal; smallest is spheroidal. Discoidal nodule approximates a flattened ellipsoid. It has a small agglutinated spherule in equatorial belt.	Uniformly granular. No top/bottom difference. Equatorial belt of discoidal does not have higher relief than rest of surface. Probable lower surface of discoidal has adherent gray-brown sediment. Mammilliation: <1 mm	Ooze	Clayey siliceous ooze	Dark brown to black. Sediment lump adhering to small spheroidal nodule, present, but prominent only on smaller nodule.
MW7401-10G37	1974-08-05	19.6980	-131.9830	-5037	MW7401-10G37-1	0.00	Surface	Mn nodule	18	8	10	0	0	0	0.030	0.120				1.90		Coalespheroidal (mostly the larger nodules) or discoidal (mostly the smaller nodules). One discoidal approximates a flattened prolate ellipsoid. The tabular nodule is elongate, with curled-up long edges. Several nodules & coalespheroid segments lobed	Top: smooth to microgranular, bottom: microgranular. Top/bottom apparent on larger nodules. Equatorial belt: high relief and granular texture. Smallest nodules have textural pattern. Mammilliation: <<1 mm to <1 mm	Clay	Brown silty clay	Dark brown. Septarian fracture pattern evident on many nodules. Worm tubes apparently not present. Sample includes soft lumps of brown silty clay; as well as many frags, of organ-pipe growth.
MW7401-10G38	1974-08-05	19.6980	-132.0100	-5155	MW7401-10G38-1	0.00	Surface	Mn nodule	7	1	6	0	0	0	0.010	0.090				1.20		Discoidal. Two nodules approximate flattened prolate ellipsoids. Discoidals have incipient lobes associated with septarian fracture patterns.	Top: smooth to microgranular, bottom: microgranular. Top:bottom apparent distinguished on several nodules. Highest relief in equatorial belt, where texture is granular. Mammilliation: <<1 mm to <1 mm	Clay	Brown silty clay	Very dark brown. Worm tubes apparently not present. Sample includes one frag, of organ-pipe growth
MW7401-10G39	1974-08-05	19.6980	-132.0450	-5120	MW7401-10G39-1	0.00	Surface	Mn nodule	6	3	3	0	0	0	0.010	0.050				0.80	Core; shark's tooth	Two are coalespheroid; three are discoidal; one is a partially encrusted shark tooth fragment. Two discoidals elongate; one discoidal approximates a flattened ellipsoidal.	Top: smooth to microgranular, bottom: microgranular. Top/bottom apparent distinguished on some nodules. Highest relief in equatorial belt, where texture is granular. Mammilliation: <<1 mm to <1 mm	Clay	Brown silty clay	Dark brown to black. Nodule growth on shark's tooth is near tip of tooth, rather than near base which is more normal. Worm tubes apparently absent.
MW7401-10G40	1974-08-05	19.7002	-132.0802	-5145	MW7401-10G40-1	0.00	Surface	Mn nodule	4	3	1	0	0	0	0.010	0.040				0.60		Three discoidal, one ellipsoidal. Largest discoidal is missing a septrian-fracture segment. Ellipsoidal nodule is prolate.	Top: smooth to microgranular, bottom: microgranular. Top/bottom apparent difficult to distinguish. Equatorial belts have slightly higher relief, but texture of surface still microgranular. Mammilliation: <<1 mm to <1 mm	Clay	Brown silty clay	Very dark brown. Worm tubes apparently not present.
MW7401-10G42	1974-08-05	19.6000	-132.1330	-5125	MW7401-10G42-1	0.00	Surface	Mn nodule	10	6	4	0	0	0	0.050	0.100				1.90		Seven discoidal; two ellipsoidal; and one coalespheroidal. 1 discoidal and 1 ellipsoidal have satellite protrusions. 3 discoids elongate to prolate. 1 ellipsoidal is flattened and prolate. Differences between discoidal and ellipsoidal shapes transitional.	Top & bottom: smooth to microgranular. Top/bottom distinguished on few nodules. Equatorial belt slightly higher relief microgranular. Surface texture most uniform for this station. Mammilliation: <<1 mm to 1 mm.	Clay	Brown silty clay	Very dark brown to black. Two nodules broken during collection process. Septarian fracture pattern evident on several nodules. Worm tubes apparently not present.
MW7401-10G43	1974-08-05	19.6000	-132.1333	-5080	MW7401-10G43-1	0.00	Surface	Mn nodule	16	4	12	0	0	0	0.020	0.200				2.80		Mostly discoidal; four are coalespheroidal. Several discoids elongate; 2 discoids have satellite protrusions, and some lobed with faint septarian fracture pattern. Two coalespheroids might be considered discoids with agglutinated spherules.	Top: smooth to microgranular, bottom: microgranular. Top/bottom apparent on large nodules. Equatorial belts have higher relief approaching granular. Mammilliation: <<1 mm to <1 mm	Clay	Brown silty clay	Very dark brown. Worm tubes apparently not present.
MW7401-11G45	1974-08-08	25.2757	-126.3555	-4415	MW7401-11G45-1	0.00	Surface	Mn nodule	2	1	1	0	0	0	0.008	0.017				0.30		Discoidal. Largest has triangular outline, smallest is faceted.	Top & bottom: Smooth to microgranular. Top/bottom not distinguished. Relief in equatorial belt not different than rest of surface. Mammilliation : << 1 mm	Clay	Brown silty clay	Brown. Worm tubes not present. Sample also includes soft lumps of brown silty clay and attached organ-pipe structures.
MW7401-11G46	1974-08-08	25.2795	-126.3515	-4410	MW7401-11G46-1	0.00	Surface	Mn nodule	1	0	0	0	0	0	0.002					0.02		Ellipsoidal vaguely faceted.	Top & bottom: Microgranular. Top/bottom not distinguished but half of surface is covered with brown bubble (organic?) structures. Mammilliation : << 1 mm	Clay	Brown silty clay	Dark brown. Sample also includes small soft lumps of brown silty clay.
MW7401-11G47	1974-08-08	25.2803	-126.3507	-4415	MW7401-11G47-1	0.00	Surface	Mn nodule	1	0	0	0	0	0	0.004					0.05		Discoidal	Top & bottom: Microgranular. Top/bottom not distinguished but part of surface is covered with brown bubble (organic?) structures. Mammilliation : << 1 mm	Clay	Brown silty clay	Dark brown. Sample also includes small soft lumps of brown silty clay.