Citation:

PANGAEA.860427

Name: Annotated record of the detailed examination of Mn deposits recovered from dredges and cores from RC15 Expedition stations
Creator: Shipboard Scientific Party
Published: 1972
License: https://creativecommons.org/licenses/by/3.0/

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Related to:

Lamont-Doherty Earth Observatory (1972): Expedition RC15, October 1971-July 1972, R/V Robert D. Conrad. Lamont–Doherty Geological Observatory, Columbia University, New York, unpublished, https://www.ngdc.noaa.gov/mgg/curator/data/robert_d._conrad/rc15/rc15_dredges.pdf

Project(s):

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

Coverage:

Median Latitude: -1.274944 * Median Longitude: -65.737196 * South-bound Latitude: -55.642000 * West-bound Longitude: -144.800000 * North-bound Latitude: 38.538000 * East-bound Longitude: -31.800000

Date/Time Start: 1971-10-05T00:00:00 * Date/Time End: 1972-08-02T00:00:00

Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 9.37 m

Event(s):

RC15-1RD * Latitude: 29.716600 * Longitude: -133.866600 * Date/Time: 1971-10-08T00:00:00 * Elevation: -2813.0 m * Location: Pacific Ocean * Campaign: * Basis: Robert Conrad * Method/Device: Dredge, rock (DRG_R)

RC15-2RD * Latitude: -26.200000 * Longitude: -106.300000 * Date/Time: 1971-11-19T00:00:00 * Elevation: -3003.0 m * Location: Pacific Ocean * Campaign: * Basis: Robert Conrad * Method/Device: Dredge, rock (DRG_R)

RC15-4RD * Latitude: -49.600000 * Longitude: -47.566600 * Date/Time: 1972-02-19T00:00:00 * Elevation: -4089.0 m * Location: South Atlantic Ocean * Campaign: * Basis: Robert Conrad * Method/Device: Dredge, rock (DRG_R)

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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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	Method/Device	Comment
1	Event label	Event		Lamont-Doherty Earth Observatory
2	Latitude of event	Latitude		Lamont-Doherty Earth Observatory
3	Longitude of event	Longitude		Lamont-Doherty Earth Observatory
4	Elevation of event	Elevation	m	Lamont-Doherty Earth Observatory
5	Method/Device of event	Method/Device		Lamont-Doherty Earth Observatory
6	Identification	ID		Lamont-Doherty Earth Observatory
7	DEPTH, sediment/rock	Depth sed	m	Lamont-Doherty Earth Observatory		Geocode
8	Depth, top/min	Depth top	m	Lamont-Doherty Earth Observatory
9	Depth, bottom/max	Depth bot	m	Lamont-Doherty Earth Observatory
10	Position	Position		Lamont-Doherty Earth Observatory	Visual description
11	Deposit type	Deposit type		Lamont-Doherty Earth Observatory
12	Quantity of deposit	Quantity		Lamont-Doherty Earth Observatory
13	Size	Size		Lamont-Doherty Earth Observatory
14	Substrate type	Substrate		Lamont-Doherty Earth Observatory
15	Sediment type	Sediment		Lamont-Doherty Earth Observatory
16	Comment	Comment		Lamont-Doherty Earth Observatory
17	Description	Description		Lamont-Doherty Earth Observatory

License:

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

Size:

1208 data points

Data

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

1 Event	2 Latitude	3 Longitude	4 Elevation [m]	5 Method/Device	6 ID	7 Depth sed [m]	8 Depth top [m]	9 Depth bot [m]	10 Position	11 Deposit type	12 Quantity	13 Size	14 Substrate	15 Sediment	16 Comment	17 Description
RC15-1RD	29.7166	-133.8666	-2813	Dredge, rock	RC15-1RD-1	0.00	0.00	0.00	Surface	Mn crust	1		Rock; palagonite tuff			1 rock of manganese encrusted palagonite tuff.
RC15-6	38.5380	-133.6500	-4427	Piston corer	RC15-6-1	0.20	0.00	0.39	In sediment	Mn micronodule	Several			Clay	Clay, dark yellowish brown (10 YR 4/2), moist and firm	Coarse fraction 1-2%, consisting of manganese micronodules
RC15-6	38.5380	-133.6500	-4427	Piston corer	RC15-6-2	0.44	0.39	0.48	Buried	Mn crust	1		Rock; consolidated clay	Clay		Manganese crust covered with clay.
RC15-6	38.5380	-133.6500	-4427	Piston corer	RC15-6-3	0.61	0.48	0.74	In sediment	Mn micronodule	Several			Clay	Clay, grayish orange (10 YR 7/4) to moderate yellowish brown (10 YR 5/4), moist, compact and friable	Coarse fraction about 5%, consisting of manganese micronodules, plant debris and few fragments of quartz.
RC15-6	38.5380	-133.6500	-4427	Piston corer	RC15-6-4	0.77	0.74	0.80	In sediment	Mn micronodule	Several			Clay	Clay, grayish brown (5 YR 3/2) to dark yellowish brown (10 YR 4/2) and to grayish brown (5 YR 3/2), moist and firm	Coarse fraction about 3%, consisting of manganese micronodules and plant debris.
RC15-6	38.5380	-133.6500	-4427	Piston corer	RC15-6-5	1.16	1.06	1.26	Buried	Mn crust	Several			Clay	Clay, dusky brown (5 YR 2/2) to grayish brown (5 YR 3/2)	Manganese crust covered with clay.
RC15-6	38.5380	-133.6500	-4427	Piston corer	RC15-6-6	2.75	2.20	3.30	In sediment	Mn micronodule	Several			Clay	Clay, dusky brown (5 YR 2/2) to grayish brown (5 YR 3/2), moist, firm and toward bottom Chalk, grayish orange (10 YR 7/4), moist, compact and locally burrowed	Coarse fraction about 3%, consisting of manganese micronodules, quartz, mica and plant debris with occasional calcareous debris.
RC15-6	38.5380	-133.6500	-4427	Piston corer	RC15-6-7	3.35	3.30	3.39	In sediment	Mn micronodule	Few			Chalk	Chalk, very pale orange (10 YR 8/2), moist and extremely compact	Coarse fraction about 5% consisting of planktonic foraminifera, calcareous fragments, few manganese micronodules and quartz.
RC15-6	38.5380	-133.6500	-4427	Piston corer	RC15-6-8	3.54	3.39	3.68	In sediment	Mn micronodule	Several			Clay	Clay, dusky brown (5 YR 2/2), moist, firm and slightly burrowed	Coarse fraction about 5%, consisting of manganese micronodules, quartz, fish teeth, mica, plant debris and palagonite.
RC15-8	32.9270	-133.8830	-5385	Piston corer	RC15-8-1	2.50	0.00	5.00	In sediment	Mn micronodule	Several			Clay	Clay, dark yellowish brown (10 YR 4/2) to dusky yellowish brown (10 YR 2/2), moist, firm, compact and intensely burrowed throughout. Near bottom becoming moderate yellowish brown (10 YR 5/4) to grayish orange (10 YR 7/4) and slightly burrowed.	Coarse fraction less than 1%, consisting of manganese micronodules, quartz and few dark minerals.
RC15-8	32.9270	-133.8830	-5385	Piston corer	RC15-8-2	5.04	5.00	5.07	Buried	Mn nodule	Several			Clay	Clay, grayish brown (5 YR 3/2), moist and firm.	Manganese nodules with sharp basal contact due to change in color. Coarse fraction less than 1%, consisting of manganese micronodules and plant debris.
RC15-8	32.9270	-133.8830	-5385	Piston corer	RC15-8-3	8.09	8.00	8.17	In sediment	Mn micronodule	Several			Clay	Sandy clay, grayish brown (5 YR 3/2) to dusky yellowish brown (10 YR 2/2), moist, granular and laminated	Coarse fraction about 10%, consisting of abundant clay aggregates, common manganese micronodules and fish teeth.
RC15-8	32.9270	-133.8830	-5385	Piston corer	RC15-8-4	8.66	8.66	8.66	Buried	Mn nodule	Several			Clay	Clay, dark yellowish brown (10 YR 4/2) to moderate yellowish brown (10 YR 5/4), moist, firm and laminated	Coarse fraction less than 1%, consisting of manganese micronodules, palagonite and plant debris. Zone of strong basal contact.
RC15-8	32.9270	-133.8830	-5385	Piston corer	RC15-8-5	8.80	8.80	8.80	Buried	Mn nodule	Several			Clay	Clay, dark yellowish brown (10 YR 4/2) to moderate yellowish brown (10 YR 5/4), moist, firm and laminated	Coarse fraction less than 1%, consisting of manganese micronodules, palagonite and plant debris. Zone of strong basal contact.
RC15-8	32.9270	-133.8830	-5385	Piston corer	RC15-8-6	9.28	9.28	9.28	Buried	Mn nodule	Several			Clay	Clay, dark yellowish brown (10 YR 4/2) to moderate yellowish brown (10 YR 5/4), moist, firm and laminated	Coarse fraction less than 1%, consisting of manganese micronodules, palagonite and plant debris. Zone of strong basal contact.
RC15-8	32.9270	-133.8830	-5385	Piston corer	RC15-8-7	9.37	9.34	9.39	Buried	Mn crust	Several			Clay	Clay, dark yellowish brown (10 YR 4/2) to moderate yellowish brown (10 YR 5/4), moist, firm and laminated	Manganese crust covered with clay. Coarse fraction less than 1%, consisting of manganese micronodules, palagonite and plant debris.
RC15-13	14.0900	-134.2000	-4255	Piston corer	RC15-13-1	0.20	0.18	0.21	Buried	Mn nodule	Several			Chalk	Foraminiferal chalk, pale yellowish brown (10 YR 6/2) to dark yellowish brown (10 YR 4/2), moist, firm and intensely burrowed	Basal contact sharp due to change in color, composition and texture.
RC15-13	14.0900	-134.2000	-4255	Piston corer	RC15-13-2	1.13	0.35	1.90	In sediment	Mn micronodule	Several			Chalk	Chalk, grayish orange (10 YR 7/4) to moderate yellowish brown (10 YR 5/4), slightly moist and compact	Coarse fraction 3-5% consisting of manganese micronodules, foraminiferal fragments, planktonic foraminifera, few fragments of quartz and fish teeth. Basal contact sharp due to change in color and texture.
RC15-14	11.0850	-134.3650	-4781	Piston corer	RC15-14-1	0.01	0.00	0.02	In sediment	Mn micronodule	Several			Clay	Radiolarian clay, olive gray (5 Y 4/1), moist and firm	Coarse fraction 10-15%, consisting of abundant radiolarla, common manganese micronodules, sponge spicules, rare diatoms, planktonic foraminifera and volcanic glass shards. Basal contact sharp due to change in color.
RC15-14	11.0850	-134.3650	-4781	Piston corer	RC15-14-2	1.60	0.02	3.17	In sediment	Mn micronodule	Several			Clay	Clay, dusky brown. (5 YR 2/2) to moderate brown (5 YR 3/4), moist, compact, crumbly and locally burrowed	Coarse fraction 2-3%, consisting of manganese micronodules, radiolaria, fish teeth, volcanic glass shards
RC15-14	11.0850	-134.3650	-4781	Piston corer	RC15-14-3	5.63	5.54	5.71	In sediment	Mn micronodule	Several			Chalk	Chalk, pale yellowish brown (10 YR 6/2) to dark yellowish brown (10 YR 4/2), moist, compact, crumbly and slightly burrowed	Coarse fraction about 1-3%, consisting of radiolarla, planktonic foraminifera, sponge spicules, some volcanic glass shards and manganese micronodules.
RC15-22	0.9100	-133.2300	-4237	Piston corer	RC15-22-1	0.18	0.00	0.35	In sediment	Mn micronodule	Several			Marl ooze	Foraminiferal marl ooze, pale yellowish orange (10 YR 6/2) to dark yellowish brown (10 YR 4/2), moist, firm and burrowed.	Coarse fraction about 60-70%, consisting of abundant planktonic foraminifera, radiolaria, rare diatoms, benthonic foraminifera, sponge spicules, manganese micronodules.
RC15-22	0.9100	-133.2300	-4237	Piston corer	RC15-22-2	1.25	1.23	1.28	In sediment	Mn micronodule	Several			Marl ooze	Foraminiferal marl ooze, dark yellowish brown (10 YR 4/2) to pale brown (5 YR 5/2), moist, firm and laminated.	Coarse fraction about 40-50%, consisting of abundant planktonic foraminifera, radiolaria, rare diatoms, manganese micronodules.
RC15-22	0.9100	-133.2300	-4237	Piston corer	RC15-22-3	5.80	5.51	6.09	In sediment	Mn micronodule	Several			Marl ooze	Foraminiferal marl ooze, dark greenish gray (5G 4/1) to greenish gray (5 G 6/1), moist, firm and burrowed. Carbonate content high.	Coarse fraction about 40-50%, consisting of abundant planktonic foraminifera, radiolarla, rare diatoms, sponge spicules, manganese micronodules.
RC15-22	0.9100	-133.2300	-4237	Piston corer	RC15-22-4	9.01	8.82	9.20	In sediment	Mn micronodule	Several			Marl ooze	Foraminiferal -radiolarian marl ooze, dark yellowish brown (10 YR 4/2) to pale brown (5 YR 5/2). moist, firm and intensely burrowed. Carbonate content high	Coarse fraction about 70%. consisting of abundant planktonic foraminifera. Radiolarla, rare diatoms, sponge spicules, manganese micronodules and fish teeth.
RC15-28	-13.7470	-144.8000	-4248	Piston corer	RC15-28-1	1.55	0.00	3.10	In sediment	Mn micronodule	Few			Clay	Sandy clay, dusky brown (5 YR 2/2) to brownish black (5 YR 2/1) and very pale orange (10 YR 8/2), moist, firm and slightly burrowed at top between 0-7 cm	Coarse fraction about 40% at top decreasing to about 20% towards bottom, consisting of abundant palagonite, common to negligible foraminiferal fragments, common manganese micronodules.
RC15-28	-13.7470	-144.8000	-4248	Piston corer	RC15-28-2	3.35	3.10	3.60	In sediment	Mn micronodule	Several			Clay	Clay, moderate yellowish brown (10 YR 5/4) to dusky yellowish brown (10 YR 2/2), moist, firm and intensely burrowed	Coarse fraction about consisting of palagonite, fish teeth, fish teeth fragments, manganese micronodules.
RC15-28TW	-13.7470	-144.8000	-4248	Trigger corer	RC15-28TW-1	0.50	0.46	0.62	Buried	Mn nodule	Several			Sand	Terrigenous sand	Manganese nodules. 46-62 cm in core.
RC15-2RD	-26.2000	-106.3000	-3003	Dredge, rock	RC15-2RD-1	0.00	0.00	0.00	Surface	Mn crust	Several		Rock; basalt, palagonite			MnO2 encrusted obsidian basalt and heavily weathered ? (altered) palagonite. No biological sample. Up to 1mm Mn overlying basalt pebble. (Manheim, 1985)
RC15-107	-41.3950	-50.9820	-5018	Piston corer	RC15-107-1	0.03	0.00	0.05	Buried	Mn nodule	Several			Clay	Sandy clay, yellowish gray (5 Y 7/2), moist and firm	Coarse frac.varies from 15-20%, cons. mainly of ab. small to large angular to subang. quartz, common dark minerals, igneous rock fragm., occasional mica, colorless and brown acidic and basic vesicular volcanic glass shards
RC15-107	-41.3950	-50.9820	-5018	Piston corer	RC15-107-2	2.30	2.20	2.40	In sediment	Mn micronodule	Few			Clay	Sandy clay, yellowish gray (5 Y 7/2), moist, firm and moderately crumbly.	Coarse fraction about 20%, consisting mainly of abundant small to large, angular to subangular quartz, frequent dark minerals, occasional palagonite. Authigenic elements consist of occasional manganese micronodules.
RC15-107	-41.3950	-50.9820	-5018	Piston corer	RC15-107-3	3.75	3.75	3.75	Buried	Mn nodule	1			Clay	Sandy clay, yellowish gray (5 Y 7/2), moist, firm and moderately crumbly.
RC15-107	-41.3950	-50.9820	-5018	Piston corer	RC15-107-4	4.00	4.00	4.00	Buried	Mn nodule	1			Clay	Sandy clay, yellowish gray (5 Y 7/2), moist, firm and moderately crumbly.	Sandy clay, yellowish gray (5 Y 7/2), moist, firm and moderately crumbly.
RC15-4RD	-49.6000	-47.5666	-4089	Dredge, rock	RC15-4RD-1	0.00	0.00	0.00	Surface	Mn crust	Several		Rock; basalt			Primarily basaltic, mostly well rounded. Probably not basement but are probably glacial instead. Up to 25mm crust slabs. (Manheim, 1985)
RC15-4RD	-49.6000	-47.5666	-4089	Dredge, rock	RC15-4RD-2	0.00	0.00	0.00	Surface	Mn coating	Several		Rock; basalt			Primarily basaltic, mostly well rounded. Probably not basement but are probably glacial instead. Manganese coating on some rocks.
RC15-5RD	-48.4666	-55.2333	-2915	Dredge, rock	RC15-5RD-1	0.00	0.00	0.00	Surface	Mn crust	Several		Rock; shale, volcanics			Some sedimentary bedding apparent in a few shale (?) specimens. Some volcanics present. Much manganese crust. Crust slabs, up to 40mm thick with no substrate. (Manheim, 1985)
RC15-113	-43.6230	-48.4320	-5312	Piston corer	RC15-113-1	0.04	0.02	0.05	Buried	Mn nodule	Several			Clay	Clay, olive gray (5 Y 4/1) to brownish gray (5 YR 4/1), moist and firm.	Coarse fraction about 2-5%, consisting of Radiolarla, diatoms, fish teeth, quartz, metamorphic rock fragments, mica, volcanic glass shards and dark minerals.
RC15-113	-43.6230	-48.4320	-5312	Piston corer	RC15-113-2	3.21	2.45	3.96	In sediment	Mn micronodule	Several			Clay	Clay, grayish olive (10 Y 4/2) to light olive brown (5 Y 5/6), moist and firm.	Coarse fraction about 1-2%, consisting of quartz, dark minerals, mica, diatoms, radiolaria, sedimentary rock fragments, manganese micronodules.
RC15-118	-55.6420	-55.9150	-4085	Piston corer	RC15-118-1	0.08	0.00	0.15	Buried	Mn crust	1			Clay	Sandy clay, very light olive gray (5 Y 5/2) and intermediate between yellowish gray (5 Y 7/2) and dusky yellow (5 Y 6/4), moist and crumbly	Manganese crust
RC15-118	-55.6420	-55.9150	-4085	Piston corer	RC15-118-2	2.32	0.15	4.49	In sediment	Mn micronodule	Several			Clay	Sandy clay, very light olive gray (5 Y 5/2) and intermediate between yellowish gray (5 Y 7/2) and dusky yellow (5 Y 6/4), moist and crumbly	Coarse fraction about 30%, consisting mainly of small angular quartz, occasional mica, palagonite, dark minerals, manganese micronodules and glauconite.
RC15-118	-55.6420	-55.9150	-4085	Piston corer	RC15-118-3	0.48	0.48	0.48	Buried	Mn nodule	Several			Clay	Sandy clay, very light olive gray (5 Y 5/2) and intermediate between yellowish gray (5 Y 7/2) and dusky yellow (5 Y 6/4), moist and crumbly	Manganese nodule occurs at 48 cm.
RC15-122	-48.4680	-55.2370	-2369	Piston corer	RC15-122-1	0.25	0.00	0.50	In sediment	Mn micronodule	Several			Sand	Foraminiferal clayey sand with frequent gravel and pebbles, moderate brown (5 YR 3/4), moist and moderately consolidated. Carbonate content moderate	Coarse fraction about 70%, consisting mainly of abundant quartz, planktonic foraminifera, glauconite, common acidic and basic igneous rock fragments, occasional metamorphic rock fragments, manganese micronodule.
RC15-122	-48.4680	-55.2370	-2369	Piston corer	RC15-122-2	0.25	0.00	0.50	Buried	Mn nodule	Several			Sand	Foraminiferal clayey sand with frequent gravel and pebbles, moderate brown (5 YR 3/4), moist and moderately consolidated	Mn nodules scattered throughout.
RC15-7RD	-47.9666	-57.0166	-3338	Dredge, rock	RC15-7RD-1	0.00	0.00	0.00	Surface	Mn crust	Several		Rock; quartzite, metamorphics			600 pounds. Basalts, manganese crust on all rocks, quartzite, assorted metamorphics. All appear to be transported from other areas. All rounded.
RC15-7RD	-47.9666	-57.0166	-3338	Dredge, rock	RC15-7RD-2	0.00	0.00	0.00	Surface	Mn nodule	Several	2.0-4.0 cm	Core; altered carbonate			Nodule fragment of 20-40mm Mn overlying altered carbonate substrate. (Manheim, 1965)
RC15-134	-49.6520	-45.7650	-3872	Piston corer	RC15-134-1	0.10	0.00	0.19	Buried	Mn nodule	Several			Clay	Clay, dusky yellow (5 Y 6/4), moist and firm. Carbonate content nil. Coarse fraction nil.	Manganese nodules.
RC15-134	-49.6520	-45.7650	-3872	Piston corer	RC15-134-2	0.10	0.00	0.19	Buried	Mn crust	1			Clay	Clay, dusky yellow (5 Y 6/4), moist and firm. Carbonate content nil. Coarse fraction nil.	Manganese crust
RC15-135	-52.3100	-46.8770	-3402	Piston corer	RC15-135-1	0.05	0.00	0.09	Buried	Mn nodule	Several			Clay	Sandy clay, olive gray (5 Y 4/1), moist and firm	Manganese nodules
RC15-135	-52.3100	-46.8770	-3402	Piston corer	RC15-135-2	0.05	0.00	0.09	Buried	Mn coating	Several		Pebble	Clay	Sandy clay, olive gray (5 Y 4/1), moist and firm	Pebbles coated by ferromanganese oxide.
RC15-135	-52.3100	-46.8770	-3402	Piston corer	RC15-135-3	0.27	0.09	0.45	Buried	Mn coating	Several		Pebble	Clay	Sandy clay, olive gray (5 Y 4/1), moist and firm	Coarse fraction varies from 40-20%, consisting mainly of abundant quartz, frequent acidic and basic igneous rock fragments, common dark minerals. Some granules and pebbles coated by ferromanganese oxide scattered throughout.
RC15-135	-52.3100	-46.8770	-3402	Piston corer	RC15-135-4	0.37	0.28	0.45	Buried	Mn nodule	Several	Large		Clay	Sandy clay, olive gray (5 Y 4/1), moist and firm	Large manganese nodules occur between 28-45 cm. Basal contact a sharp change in color, texture and composition.
RC15-135	-52.3100	-46.8770	-3402	Piston corer	RC15-135-5	0.61	0.45	0.76	In sediment	Mn micronodule	Several			Clay	Sandy clay, yellowish gray (5 Y 7/2), moist and crumbly	Coarse fraction about 25%, consisting essentially of manganese micronodules, glauconite, quartz, dark minerals and palagonite.
RC15-136	-51.6920	-51.3220	-2347	Piston corer	RC15-136-1	0.99	0.90	1.08	Buried	Mn nodule	Several			Clay	Sandy clay, olive gray (5 Y 4/1) moist and crumbly.	Manganese nodules.
RC15-136	-51.6920	-51.3220	-2347	Piston corer	RC15-136-2	0.99	0.90	1.08	Buried	Mn crust	1			Clay	Sandy clay, olive gray (5 Y 4/1) moist and crumbly	Manganese crust.
RC15-136	-51.6920	-51.3220	-2347	Piston corer	RC15-136-3	0.74	0.40	1.08	In sediment	Mn micronodule	Several			Clay	Sandy clay, olive gray (5 Y 4/1) moist and crumbly	Coarse fraction varies from 20-40%, consisting mainly of abundant quartz, dark minerals, igneous rock fragments, negligible sponge spicules, Radlolarla and manganese micronodules.
RC15-8RD	-30.5000	-35.9333	-1357	Dredge, rock	RC15-8RD-1	0.00	0.00	0.00	Surface	Mn crust	Several	Large	Rock; altered basalt			Large pieces of manganese crust, pieces of coral, shell, manganese crust and possible silica cementation. 12mm crust overlying altered basalt. (Manheim, 1985)
RC15-149	-28.4480	-38.1630	-4744	Piston corer	RC15-149-1	0.84	0.84	0.84	Buried	Mn nodule	Several			Clay	Clay, dark yellowish brown (10 YR 4/2) and moderate yellowish brown (10 YR 5/4) moist, firm and intensely burrowed	Manganese nodules.
RC15-149	-28.4480	-38.1630	-4744	Piston corer	RC15-149-2	3.73	3.73	3.73	Buried	Mn nodule	Several			Clay	Clay, dark yellowish brown (10 YR 4/2) and moderate yellowish brown (10 YR 5/4) moist, firm and intensely burrowed	Manganese nodules.
RC15-149	-28.4480	-38.1630	-4744	Piston corer	RC15-149-3	0.05	0.00	0.10	In sediment	Mn micronodule	Several			Clay	Clay, dark yellowish brown (10 YR 4/2), moist, firm and slightly burrowed	Coarse fraction about 1%, consisting mainly of quartz, volcanic glass shards, occasional dark minerals, mica. Authigenic elements consist essentially of manganese micronodules.
RC15-149	-28.4480	-38.1630	-4744	Piston corer	RC15-149-4	1.93	0.10	3.76	In sediment	Mn micronodule	Several			Clay	Clay, dark yellowish brown (10 YR 4/2) and moderate yellowish brown (10 YR 5/4) moist, firm and intensely burrowed	Coarse fraction less than 1% to negligible, consisting of manganese micronodules, quartz, palagonite, fish teeth, negligible dark minerals
RC15-149	-28.4480	-38.1630	-4744	Piston corer	RC15-149-5	4.38	3.76	5.00	In sediment	Mn micronodule	Several			Clay	Clay, moderate brown (5 YR 4/4), moist and crumbly to yellowish brown (10 YR 4/2) at the bottom	Coarse fraction negligible, consisting mainly of manganese micronodules, fish teeth and palagonite.
RC15-10RD	-28.3664	-41.2167	-3181	Dredge, rock	RC15-10RD-1	0.00	0.00	0.00	Surface	Mn crust	Several			Marl		~80 pounds. Mn crust, with some clayey marl adhering to it. 2 large chunks, some assorted bits. Presence of possible worm burrowing in marl.
RC15-12RD	-20.6333	-35.5333	-1169	Dredge, rock	RC15-12RD-1	0.00	0.00	0.00	Surface	Mn crust	Several	Up to 10.0x5.0x3.0 cm	Rock; sandstone, carbonate			Also 2 layer chunks of scoria like sandstone (10cmx5cmx3cm) and a piece of undetermined material (appears to be Mn crusted on carbonate rock).
RC15-13RD	-20.9666	-31.8000	-4141	Dredge, rock	RC15-13RD-1	0.00	0.00	0.00	Surface	Mn crust	Several		Rock; sandstone, palagonite			Some probable sandstone fragments, Mn crust, dark minerals, CaCo3 crust (?), adhering to dark mineral; bone. Possible most derived from basaltic origins. Light porous Mn and palagonite fragments (Manheim, 1985)
RC15-14RD	-21.0166	-31.9000	-4331	Dredge, rock	RC15-14RD-1	0.00	0.00	0.00	Surface	Mn crust	Several		Bone and consolidated sediment			Mn crust. Possible piece of bone. Some iron rich fragments and aggregates containing garnet.Some sand and clay conglomerates.
RC15-14RD	-21.0166	-31.9000	-4331	Dredge, rock	RC15-14RD-2	0.00	0.00	0.00	Surface	Mn nodule	Several	Small	Core; volcanic breccia			Small nodules consisting of coarse volcanic clastic material. (Manheim, 1985). Some sand and clay conglomerates.
RC15-16RD	-20.5667	-31.8000	-3711	Dredge, rock	RC15-16RD-1	0.00	0.00	0.00	Surface	Mn crust	Several	0.7 cm thick	Rock; palagonite and consolidated sediment			Much Mn crust overlying what seems to be a clay-sand conglomerate loosely lithified. 7mm Mn and palagonite crust on altered volcanic substrate. (Manheim, 1985)
RC15-164	-2.9520	-34.3850	-3943	Piston corer	RC15-164-1	0.45	0.40	0.50	In sediment	Mn micronodule	Several			Marl	Foraminiferal marl, moderate yellowish brown (10 YR 5/4) to dark yellowish brown (10 YR 4/2), moist, firm and slightly burrowed. Carbonate content moderate	Coarse fraction about 10%, consisting of abundant foraminiferal fragments, common planktonic foraminifera, manganese micronodules.
RC15-164	-2.9520	-34.3850	-3943	Piston corer	RC15-164-2	0.45	0.40	0.50	Buried	Mn coating	Several			Marl	Foraminiferal marl, moderate yellowish brown (10 YR 5/4) to dark yellowish brown (10 YR 4/2), moist, firm and slightly burrowed. Carbonate content moderate	Abundant foraminiferal fragments with manganese encrustment.
RC15-165	-0.9170	-35.6500	-4384	Piston corer	RC15-165-1	0.00	0.00	0.00	Surface	Mn nodule	Several
RC15-165	-0.9170	-35.6500	-4384	Piston corer	RC15-165-2	0.25	0.23	0.26	In sediment	Mn micronodule	Several			Marl	Marl, dusky yellowish brown (10 YR 2/2), moist and firm. Carbonate content moderate	Coarse fraction about 5%, consisting of abundant planktonic foraminifera and/or fragments, common manganese micronodules.
RC15-165	-0.9170	-35.6500	-4384	Piston corer	RC15-165-3	0.25	0.23	0.26	Buried	Mn coating	Several			Marl	Marl, dusky yellowish brown (10 YR 2/2), moist and firm. Carbonate content moderate	Coarse fraction about 5%, consisting of abundant planktonic foraminifera and/or fragments, common manganese encrustment, manganese micronodules and rare sponge spicules.
RC15-165	-0.9170	-35.6500	-4384	Piston corer	RC15-165-4	0.38	0.38	0.38	In sediment	Mn micronodule	Several			Marl	Foraminiferal marl, dusky yellowish brown (10 YR 2/2), moist and firm	A zone rich in manganese micronodules.
RC15-165	-0.9170	-35.6500	-4384	Piston corer	RC15-165-5	5.29	5.13	5.45	In sediment	Mn micronodule	Several			Marl	Marl grading into clay, light olive gray (5 Y 6/1) to olive gray (5 Y 4/1), moist, firm and slightly burrowed	Coarse fraction 2-3% consisting of foraminiferal fragments, planktonic foraminifera and some quartz and manganese micronodules towards bottom of unit.
RC15-165	-0.9170	-35.6500	-4384	Piston corer	RC15-165-6	6.10	6.01	6.19	In sediment	Mn micronodule	Several			Clay	Clay, medium dark gray (N4) to light olive gray (5 Y 5/1) moist, firm and locally burrowed	Coarse fraction less than 1%, consisting of foraminiferal fragments and manganese micronodules.
RC15-166	-0.7170	-40.5000	-3768	Piston corer	RC15-166-1	0.45	0.46	0.43	In sediment	Mn micronodule	Several			Marl	Foraminiferal marl, dusky yellowish brown (10 YR 2/2) to dark yellowish brown (10 YR 4/2), moist and firm. Carbonate'content moderate	Coarse fraction 10-15%, consisting of abundant planktonic foraminifera, common benthonic foraminifera, manganese micronodules, rare quartz
RC15-166	-0.7170	-40.5000	-3768	Piston corer	RC15-166-2	0.45	0.46	0.43	Buried	Mn coating	Several			Marl	Foraminiferal marl, dusky yellowish brown (10 YR 2/2) to dark yellowish brown (10 YR 4/2), moist and firm. Carbonate'content moderate	Abundant planktonic foraminifera with manganese encrustment.
RC15-166	-0.7170	-40.5000	-3768	Piston corer	RC15-166-3	0.63	0.55	0.70	Buried	Mn coating	Several			Marl	Foraminiferal marl, light olive gray (5 Y 6/1) to medium dark gray (N4), moist, firm and slightly burrowed	Coarse fraction about 15%, consisting of abundant planktonic and benthonic foraminifera, common manganese encrustment, rare manganese micronodules
RC15-167	1.8150	-39.7520	-4446	Piston corer	RC15-167-1	2.64	2.51	2.76	In sediment	Mn micronodule	Several			Marl	Marl, light olive gray (5 Y 5/2), moist, firm and slightly burrowed	Coarse fraction about 3%, consisting of planktonic foraminifera, foraminiferal fragments, volcanic glass shards, plant debris and few manganese micronodules.
RC15-167	1.8150	-39.7520	-4446	Piston corer	RC15-167-2	4.49	4.18	4.80	In sediment	Mn micronodule	Several			Clay	Clay, olive gray (5 Y 4/1), moist and firm	Coarse fraction about 1%, consisting of foraminiferal fragments, few planktonic foraminifera and manganese micronodules.
RC15-168	0.6050	-41.1420	-4123	Piston corer	RC15-168-1	0.62	0.42	0.81	In sediment	Mn micronodule	Several			Clay	Clay, dark greenish gray (5 OY 4/1) to dark greenish gray (5 G 4/1), moist and firm	Coarse fraction about 5% consisting of abundant planktonic foraminifera, rare mica, sponge spicules and manganese micronodules.
RC15-172	5.0250	-44.1620	-3722	Piston corer	RC15-172-1	0.50	0.10	0.90	Buried	Mn coating	Several			Marl	Foraminiferal marl, dusky yellowish brown (10 YR 2/2) to moderate yellowish brown (10 YR 5/4), moist, firm and locally burrowed	Coarse fraction 5-10%, consisting of abundant planktonic foraminifera, common benthonic foraminifera, rare manganese encrustment.
RC15-172	5.0250	-44.1620	-3722	Piston corer	RC15-172-2	0.38	0.25	0.50	In sediment	Mn micronodule	Several			Marl	Foraminiferal marl, dusky yellowish brown (10 YR 2/2) to moderate yellowish brown (10 YR 5/4), moist, firm and locally burrowed	Darker zones between 25-50 cm contain manganese micronodules.
RC15-172	5.0250	-44.1620	-3722	Piston corer	RC15-172-3	1.95	1.70	2.20	In sediment	Mn micronodule	Several			Clay	Clay, moderate yellowish brown (10 YR 5/4), moist, firm and slightly burrowed	Coarse fraction less than 5%, consisting of foraminiferal fragments, planktonic foraminifera, echinold spines, quartz and manganese micronodules.
RC15-18RD	19.4500	-59.7666	-4913	Dredge, rock	RC15-18RD-1	0.00	0.00	0.00	Surface	Mn crust	1	9.0x15.0 cm, 1.0 cm thick	Rock; lithified clay			One several ounce (9cm x15 cm) flat piece of rock, fresh surface very pale orange (10YR8/2) negligible carbonate. Thin Mn crust on one side (1 cm). Rock itself is a semi-lithified clay.
RC15-18RD	19.4500	-59.7666	-4913	Dredge, rock	RC15-18RD-2	0.00	0.00	0.00	Surface	Mn micronodule	Several			Clay		Appears to be micronodules of Mn imbedded in clay.
RC15-19RD	27.6000	-61.1333	-5706	Dredge, rock	RC15-19RD-1	0.00	0.00	0.00	Surface	Mn nodule	Several	2.0-3.0 cm up to 10.0-15.0 cm	Core; consolidated sediment			Mn nodules in a semi-consolidated clay material-size of nodules 2cm x 3cm to 10cm x 15cm, same nodules loose, not in matrix; some igneous rock apparently a basalt. No CaCo3 in sediment adhering to any specimens. Mn coating on most specimens.
RC15-19RD	27.6000	-61.1333	-5706	Dredge, rock	RC15-19RD-2	0.00	0.00	0.00	Surface	Mn crust	1	0.1-0.3 cm thick	Rock; altered basalt (palagonite)			1-3mm Mn (altered) over poor altered orange basaltic substrate. (Manheim, 1985)
RC15-20RD	27.7000	-61.1666	-5390	Dredge, rock	RC15-20RD-1	0.00	0.00	0.00	Surface	Mn nodule	Several	2.0-15.0 cm	Core; volcanics			Spheroidal Mn nodules from 2 cm to15 cm in diameter. 40-50mm diam nodules with volcanic substrate (Manheim, 1985)
RC15-20RD	27.7000	-61.1666	-5390	Dredge, rock	RC15-20RD-2	0.00	0.00	0.00	Surface	Mn crust	Several	0.1-1.0 cm thick	Rock; consolidated sediment			Pieces of broken Mn possibly crust; conglomerates of semi-consolidated clay with Mn and basaltic-type rock (probably). 1-10mm Mn crust around core. (Manheim, 1985)
RC15-20RD	27.7000	-61.1666	-5390	Dredge, rock	RC15-20RD-3	0.00	0.00	0.00	Surface	Mn coating	Several		Worm tube			Large worm tubes in sediment (1cm x 5 cm). Other pieces of basaltic rock Mn coating on most. Note 1. Mn coating inside of worm tubes
RC15-21RD	28.0333	-61.0000	-5028	Dredge, rock	RC15-21RD-1	0.00	0.00	0.00	Surface	Mn nodule	Several	Small				Mn nodules and crust, nodules are both small and rough in texture.
RC15-21RD	28.0333	-61.0000	-5028	Dredge, rock	RC15-21RD-2	0.00	0.00	0.00	Surface	Mn crust	Several	0.2-0.5 cm thick	Rock; basalt			Some fragments of crust. Very small quantity of what appears to be basaltic rock. 2-5mm crust over yellow punky substrate. (Manheim, 1985)
RC15-22RD	22.6833	-61.0833	-5330	Dredge, rock	RC15-22RD-1	0.00	0.00	0.00	Surface	Mn nodule	1	8.0 cm				One Mn nodule 8 cm in diameter.
RC15-22RD	22.6833	-61.0833	-5330	Dredge, rock	RC15-22RD-2	0.00	0.00	0.00	Surface	Mn coating	Several		Tooth; shark			Mn coated shark's tooth
RC15-23RD	27.0666	-60.4666	-5891	Dredge, rock	RC15-23RD-1	0.00	0.00	0.00	Surface	Mn nodule	Few	3.0 cm				Few nodules. Some small (golf ball) size nodules (Manheim, 1985)
RC15-23RD	27.0666	-60.4666	-5891	Dredge, rock	RC15-23RD-2	0.00	0.00	0.00	Surface	Mn crust	Several		Rock; igneous			Primarily fine grained igneous rock coated with Mn crust. Some indurated clay.
RC15-23RD	27.0666	-60.4666	-5891	Dredge, rock	RC15-23RD-3	0.00	0.00	0.00	Surface	Mn coating	Several		Pebble; basalt			Mn coated basalt pebbles. (Manheim, 1985)
RC15-24RD	26.9333	-61.3833	-5754	Dredge, rock	RC15-24RD-1	0.00	0.00	0.00	Surface	Mn nodule	Several	2.0-5.0 cm				Several nodules-most fall into 5 cm diameter range or 2 cm diameter range. One small rock as well.
RC15-25RD	27.5833	-60.4000	-5536	Dredge, rock	RC15-25RD-1	0.00	0.00	0.00	Surface	Mn crust	Several	Up to 10.0x15.0 cm				One 15x10 cm piece of either Mn crust (well rounded) or nodule coarse texture. Several smaller pieces of both coarse and smooth textured pieces of Mn.
RC15-25RD	27.5833	-60.4000	-5536	Dredge, rock	RC15-25RD-2	0.00	0.00	0.00	Surface	Mn coating	1	Large	Boulder			Huge Mn coated boulder (Manheim, 1985)
RC15-26RD	27.5666	-60.3666	-5745	Dredge, rock	RC15-26RD-1	0.00	0.00	0.00	Surface	Mn crust	1	10.0x5.0x5.0 cm, 0.3 cm thick	Rock; igneous			One 10x5x5 cm piece of igneous rock. Fine grained -probably basalt. Several mm. layer of Mn crust on one side of rock.
RC15-27RD	27.9950	-61.0500	-5509	Dredge, rock	RC15-27RD-1	0.00	0.00	0.00	Surface	Mn crust	Several		Rock; consolidated clay			100 pounds. Mn material-primarily crust. Crust material is primarily coarse, evidence of worm burrow on several pieces. Clay adhering to some. Some pieces of indurated clay also collected.
RC15-27RD	27.9950	-61.0500	-5509	Dredge, rock	RC15-27RD-2	0.00	0.00	0.00	Surface	Mn nodule	Few	1.0 cm				A few small nodules (1 cm diameter); both smooth and coarse textured. Assorted flat and round nodules composed largely of substrate. (Manheim, 1985)
RC15-28RD	28.0333	-60.9983	-5105	Dredge, rock	RC15-28RD-1	0.00	0.00	0.00	Surface	Mn nodule	Many	5.0-15.0 cm				100 pounds. Nodules ranging from .5 cm to 15 cm in diameter. Bulk fall in 8 cm and 4 cm diameter range. All sizes exhibit coarse and smooth texture. Nodule, not much Mn. (Manheim, 1985 and Roberston, 1973)
RC15-28RD	28.0333	-60.9983	-5105	Dredge, rock	RC15-28RD-2	0.00	0.00	0.00	Surface	Mn crust	Several					Some Mn crust.
RC15-28RD	28.0333	-60.9983	-5105	Dredge, rock	RC15-28RD-3	0.00	0.00	0.00	Surface	Mn coating	Several		Tooth; shark			Several sharks teeth coated with Mn.
RC15-29RD	29.1583	-61.1600	-5491	Dredge, rock	RC15-29RD-1	0.00	0.00	0.00	Surface	Mn nodule	3	1.0-3.0 cm				3 small nodules, 2-1 cm diameter, and 1- 3 cm diameter. Smooth texture.
RC15-190	28.0320	-60.0070	-5075	Piston corer	RC15-190-1	0.35	0.00	0.70	Surface	Mn micronodule	Many			Clay	Diatomaceous clay with abundant manganese micronodules, intermediate between moderate brown (5 YR 4/4) and dark yellowish brown (10 YR 4/2), moist, firm and burrowed	Coarse fraction about 20%, consisting mainly of abundant manganese micronodules, diatoms, frequent to common quartz.
RC15-190	28.0320	-60.0070	-5075	Piston corer	RC15-190-2	0.35	0.00	0.70	Buried	Mn coating	Several			Clay	Diatomaceous clay intermediate between moderate brown (5 YR 4/4) and dark yellowish brown (10 YR 4/2), moist, firm and burrowed	Altered igneous rock fragments, sedimentary rock fragments coated by iron oxide
RC15-190	28.0320	-60.0070	-5075	Piston corer	RC15-190-3	0.35	0.00	0.70	Buried	Mn nodule	Many			Clay	Diatomaceous clay intermediate between moderate brown (5 YR 4/4) and dark yellowish brown (10 YR 4/2), moist, firm and burrowed.	Numerous small manganese nodule fragments up to 20 mm in diameter scattered throughout.
RC15-190	28.0320	-60.0070	-5075	Piston corer	RC15-190-4	1.10	0.70	1.50	Surface	Mn micronodule	Many			Ooze	Diatomaceous clay ooze, intermediate between light brown (5 YR 5/6) and pale yellowish brown (10 YR 6/2), with numerous burrows of dark yellowish brown (10 YR 4/2); moist, firm and crumbly. Coarse fraction about 35% consisting mainly of large diatoms.	Numerous concentrations of manganese micronodules scattered throughout.
RC15-190	28.0320	-60.0070	-5075	Piston corer	RC15-190-5	2.00	1.50	2.50	Surface	Mn micronodule	Several			Clay ooze	Interbedded layers of diatomaceous clay and diatomaceous clay ooze	Interbedded layers of diatomaceous clay and diatomaceous clay ooze with manganese micronodules.
RC15-190	28.0320	-60.0070	-5075	Piston corer	RC15-190-6	1.70	1.70	1.70	Buried	Mn nodule	Several			Clay ooze	Interbedded layers of diatomaceous clay and diatomaceous clay ooze	Manganese nodule. Interbedded layers of diatomaceous clay and diatomaceous clay ooze
RC15-190	28.0320	-60.0070	-5075	Piston corer	RC15-190-7	4.63	4.60	4.65	Surface	Mn micronodule	Many			Clay	Clay with abundant manganese micronodules, dusky yellowish brown (10 YR 2/2), moist, firm and burrowed	Coarse fraction about 5% consisting mainly of abundant manganese micronodules, common to rare fish teeth, palagonite, altered igneous rock fragments and occasional sedimentary rock fragments coated by iron oxide.
RC15-190	28.0320	-60.0070	-5075	Piston corer	RC15-190-8	4.63	4.60	4.65	Buried	Mn nodule	Many	Small		Clay	Clay with abundant manganese micronodules, dusky yellowish brown (10 YR 2/2), moist, firm and burrowed	Numerous very small manganese nodules scattered throughout
RC15-191	27.6900	-61.0850	-5130	Piston corer	RC15-191-1	0.03	0.00	0.05	Buried	Mn nodule	Several			Marl	Marl, grayish orange (10 YR 7/4), moist, soft and burrowed. Carbonate content moderate	Manganese nodules occurs at the top. Coarse fraction about 4%, consisting mainly of planktonic foraminifera, occasional manganese micronodules.
RC15-191	27.6900	-61.0850	-5130	Piston corer	RC15-191-2	2.28	1.95	2.60	Surface	Mn micronodule	Several			Marl	Marl, grayish orange (10 YR 7/4), moist, soft and burrowed. Carbonate content moderate	Coarse fraction about 5%, consisting mainly of small to large planktonic foraminifera (dominant), common manganese micronodules.
RC15-191	27.6900	-61.0850	-5130	Piston corer	RC15-191-3	2.35	2.35	2.35	Buried	Mn nodule	Several			Marl	Marl, grayish orange (10 YR 7/4), moist, soft and burrowed	Manganese nodule occurs at 235 cm.
RC15-197	27.5400	-60.4200	-5593	Piston corer	RC15-197-1	0.03	0.00	0.05	Buried	Mn nodule	Several			Clay	Clay, moderate yellowish brown (10 YR 5/4), moist and moderately firm	Mn nodules occur at the top. Coarse fraction only a trace of manganese micronodules and planktonic foraminifera.
RC15-199	27.9950	-61.0620	-5452	Piston corer	RC15-199-1	0.03	0.00	0.05	Buried	Mn nodule	1					Manganese nodule
RC15-199	27.9950	-61.0620	-5452	Piston corer	RC15-199-2	0.13	0.05	0.20	Surface	Mn micronodule	Many			Sand	Clayey sand, dark yellowish brown (10 YR 4/2), moist and moderately consolidated	Coarse fraction about 80%, consisting of abundant altered igneous rock fragments, frequent manganese micronodules, angular to subangular quartz, occasional feldspar, palagonite and traces of planktonic foraminifera.
RC15-199	27.9950	-61.0620	-5452	Piston corer	RC15-199-3	0.13	0.05	0.20	Buried	Mn crust	Several			Sand	Clayey sand	Clayey sand with numerous gravel and manganese crust.
RC15-199	27.9950	-61.0620	-5452	Piston corer	RC15-199-4	1.33	1.05	1.60	Surface	Mn micronodule	Several			Sand	Sand, dark yellowish orange (10 YR 6/6), moist and moderately consolidated	Coarse fraction about 95% consisting mainly of abundant igneous rock fragments occasional palagonite, quartz, feldspar and manganese micronodules.
RC15-199	27.9950	-61.0620	-5452	Piston corer	RC15-199-5	1.33	1.05	1.60	Buried	Fe-Mn coating	Several			Sand	Sand, dark yellowish orange (10 YR 6/6), moist and moderately consolidated	Coarse fraction about 95% consisting mainly of abundant igneous rock fragments coated by iron oxide.
RC15-200	28.0370	-60.9980	-5716	Piston corer	RC15-200-1	0.53	0.00	1.05	Surface	Mn micronodule	Several			Clay	Clay, intermediate between moderate brown(5 YR 4/4) and dark yellowish brown (10 YR 4/2), moist and soft	Coarse fraction negligible to nil, consisting of quartz, igneous rock fragments, coated by iron oxide, dark minerals, manganese micronodules, fish teeth and sponge spicules.
RC15-200	28.0370	-60.9980	-5716	Piston corer	RC15-200-2	1.14	1.05	1.23	Buried	Mn nodule	Several			Clay	Clay, intermediate between moderate brown(5 YR 4/4) and dark yellowish brown (10 YR 4/2), moist and soft	Basal contact a sharp change in color, texture and composition where Mn nodules are situated.
RC15-200	28.0370	-60.9980	-5716	Piston corer	RC15-200-3	1.14	1.05	1.23	Buried	Mn crust	Several			Clay	Clay, intermediate between moderate brown(5 YR 4/4) and dark yellowish brown (10 YR 4/2), moist and soft	Basal contact a sharp change in color, texture and composition where Mn crust situated.
RC15-203	29.1450	-61.1720	-5386	Piston corer	RC15-203-1	3.24	1.18	5.30	Surface	Mn micronodule	Many			Clay	Clay, moderate brown (5 YR 4/4) to moderate brown (5 YR 3/4), moist and firm	Coarse fraction about 1%, consisting of abundant manganese micronodules, abundant fish teeth, common to rare planktonic foraminifera, quartz, palagonite and phillipsite.
RC15-203	29.1450	-61.1720	-5386	Piston corer	RC15-203-2	4.29	4.28	4.30	Buried	Mn nodule	Several			Clay	Clay, moderate brown (5 YR 4/4) to moderate brown (5 YR 3/4), moist and firm	Manganese nodules occur at 428-430 cm.
RC15-205	29.6170	-62.5000	-4949	Piston corer	RC15-205-1	0.20	0.09	0.31	Surface	Mn micronodule	Several			Clay	Marl, pale yellowish brown (10 YR 6/2), with numerous burrows of pale yellowish orange (10 YR 8/6), moist, firm and burrowed. Carbonate content moderate	Coarse fraction about 1%, consisting mainly of planktonic foraminifera, manganese micronodules, occasional altered igneous rock fragments, palagonite, negligible benthonic foraminifera.
RC15-205	29.6170	-62.5000	-4949	Piston corer	RC15-205-2	0.20	0.09	0.31	Buried	Mn crust	1	Small		Marl	Marl, pale yellowish brown (10 YR 6/2), with numerous burrows of pale yellowish orange (10 YR 8/6), moist, firm and burrowed. Carbonate content moderate	Very small manganese crust.
RC15-205	29.6170	-62.5000	-4949	Piston corer	RC15-205-3	0.40	0.31	0.49	Surface	Mn micronodule	Several			Clay	Clay, dark, yellowish brown (10 YR 4/2) and moderate brownish black (5 Y 3/1) > moist, firm and burrowed	Coarse fraction about 1%, consisting essentially of manganese micronodules, altered igneous rock fragments, occasional fish teeth.
RC15-205	29.6170	-62.5000	-4949	Piston corer	RC15-205-4	0.40	0.35	0.45	Buried	Mn nodule	Several			Clay	Clay, dark, yellowish brown (10 YR 4/2) and moderate brownish black (5 Y 3/1) > moist, firm and burrowed	Manganese nodule occurs between 35-45 cm.
RC15-205	29.6170	-62.5000	-4949	Piston corer	RC15-205-5	0.40	0.35	0.45	Buried	Mn crust	Several		Rock; igneous	Clay	Clay, dark, yellowish brown (10 YR 4/2) and moderate brownish black (5 Y 3/1) > moist, firm and burrowed	Manganese crust on igneous rock occurs between 35-45 cm.
RC15-205	29.6170	-62.5000	-4949	Piston corer	RC15-205-6	0.65	0.58	0.72	Surface	Mn micronodule	Many			Clay	Clay, with dark yellowish brown (10 YR 4/2), moist and firm	Coarse fraction about 5%, consisting mainly of abundant manganese micronodules, igneous rock fragments coated by iron oxide, occasional palagonite, fish teeth.
RC15-205	29.6170	-62.5000	-4949	Piston corer	RC15-205-7	0.65	0.58	0.72	Buried	Mn crust	Many	Fragment		Clay	Clay, with dark yellowish brown (10 YR 4/2), moist and firm	Abundant small fragments of manganese crust.