Citation:

V Robert Conrad Cruise 8 - Preliminary Megascopic Descriptions of Split Cores. Lamont Geological Observatory, Columbia University, New York, unpublished, 208

Name: Annotated record of the detailed examination of Mn deposits from R/V Robert Conrad Cruise 8 stations
Published: 1964
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

The cores and dredges described in this report were taken during the Robert Conrad Cruise 8 from November 1963 until August 1964 by the Lamont Geological Observatory, Columbia University from the R/V Robert Conrad. A total of 140 cores and dredges were recovered and are available at Lamont-Doherty Earth Observatory for sampling and study.

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: -14.913955 * Median Longitude: -25.061433 * South-bound Latitude: -58.050000 * West-bound Longitude: -162.900000 * North-bound Latitude: 36.733000 * East-bound Longitude: 164.720000

Date/Time Start: 1963-12-05T00:00:00 * Date/Time End: 1964-08-20T00:00:00

Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 10.175 m

Event(s):

RC08-4RD * Latitude: 19.600000 * Longitude: -65.066600 * Date/Time: 1964-06-23T00:00:00 * Elevation: -7260.0 m * Location: Atlantic Ocean * Campaign: * Basis: Robert Conrad * Method/Device: Dredge, rock (DRG_R) * Comment: Institute: LDEO

RC08-5 * Latitude: 6.217000 * Longitude: -44.220000 * Date/Time: 1963-12-05T00:00:00 * Elevation: -4407.0 m * Recovery: 8.03 m * Campaign: * Basis: Robert Conrad * Method/Device: Piston corer (PC)

RC08-6 * Latitude: 5.133000 * Longitude: -42.400000 * Date/Time: 1963-12-06T00:00:00 * Elevation: -4555.0 m * Recovery: 5.92 m * Campaign: * Basis: Robert Conrad * Method/Device: Piston corer (PC)

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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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

License:

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

Size:

1616 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 Depth top [m]	9 Depth bot [m]	10 Position	11 Deposit type	12 Quantity	13 Size	14 Substrate	15 Sediment	16 Comment	17 Description
RC08-5	1963-12-05	6.2170	-44.2200	-4407	RC08-5-1	0.350	0.30	0.40	In sediment	Mn micronodule	Many			Ooze	Foraminiferal ooze, pale yellowish-brown (10YR6/2), grading with depth to dusky yellowish-brown (10YR2/2) mottled with dark yellowish-brown (10YRA/2), non calcareous clay (red clay).	At bottom, foraminifera absent but manganese micronodules abundant.
RC08-6	1963-12-06	5.1330	-42.4000	-4555	RC08-6-1	0.185	0.10	0.27	In sediment	Mn micronodule	Many			Clay	Calcareous clay, moderately firm. Top 10 cm. is pale yellowish-brovn (10YR6/2), then grades into moderate brown (5YR4/4)	Abundant manganese micronodules present below 10 cm.
RC08-6	1963-12-06	5.1330	-42.4000	-4555	RC08-6-2	0.305	0.27	0.34	In sediment	Mn micronodule	Many			Clay	Laminated clay, grayish-brown (5YR3/2), soft and plastic (red clay)	Contains less than 0% carbonate and abundant manganese micronodules, which make up 99% of the coarse fraction, comprising less than 5% of the sediment.
RC08-6	1963-12-06	5.1330	-42.4000	-4555	RC08-6-3	0.510	0.34	0.68	In sediment	Mn micronodule	Several			Clay	Clay, moderately firm, moderate yellowish-brown (10YR5/4), plastic, (calcareous red clay). Carbonate content approximately 10%.	Coarse fraction made up of planktonic foraminifera and manganese micronodules, and comprises approximately 5% of sediment.
RC08-8	1963-12-09	0.0000	-35.6000	-4440	RC08-8-1	0.420	0.32	0.52	In sediment	Mn micronodule	Several			Clay	Foraminiferal clay, silty and sandy, burrow mottled, compact, light yellowish-brown (10YR6/4) turning to a light brown (5YR5/6) in basal 24 cm.	There are also many very thin, medium dark gray (N4) laminae of silty manganese particles, particularly between 32 cm. and 52 cm.
RC08-8	1963-12-09	0.0000	-35.6000	-4440	RC08-8-2	1.330	1.27	1.39	In sediment	Mn micronodule	Several			Ooze	Clayly foraminiferal ooze, compact, burrow mottled, silty and sandy, light yellowish-brown (10YR6/4) and medium light gray (N6)	Mica and manganese particles make up 10% while nonbiogenous clay forms 50%.
RC08-11	1963-12-13	-11.2700	-27.1200	-5545	RC08-11-1	1.600	1.32	1.88	In sediment	Mn micronodule	Few			Clay	Homogeneous, soft, plastic clay, between grayish-orange and moderate yellowish-brown (10YR6/4) in color.	Material coarser than silt absent. Manganese micronodules occur very rarely.
RC08-11	1963-12-13	-11.2700	-27.1200	-5545	RC08-11-2	2.205	1.88	2.53	In sediment	Mn micronodule	Many			Clay	Homogeneous, moderately compact, plastic clay, between pale and dark yellowish-brown (10YR5/2).	Grain size is silt size and smaller, although manganese micronodules (abundant) up to fine sand size do occur.
RC08-11	1963-12-13	-11.2700	-27.1200	-5545	RC08-11-3	8.800	8.12	9.48	In sediment	Mn micronodule	Many			Clay	Thinly laminated clay. between grayish-orange and pale yellowish-brown (10YR7/4 - 10YR6/2), compact, plastic.	The sand is composed predominantly of quartz, with approximately 10% carbonate, approximately 5% dark minerals. Frequent manganese micronodules.
RC08-11	1963-12-13	-11.2700	-27.1200	-5545	RC08-11-4	9.780	9.70	9.86	In sediment	Mn micronodule	Several			Clay	Homogeneous clay, compact, plastic. Top 10 cm. pale yellowish-brown, then between grayish-orange and moderate yellowish-brown (10YR6/4)	Speckled with manganese micronodules from 970-986 cm.
RC08-12	1963-12-13	-12.1000	-26.4700	-5733	RC08-12-1	0.135	0.00	0.27	In sediment	Mn micronodule	Several			Clay	Silty clay, soft, dark yellowish-brown (10YR4/2), grades to pale yellowish-brown (10YR6/2)	Manganese micronodules common in the silt size fraction. Burrow mottled throughout.
RC08-14	1963-12-15	-16.5500	-22.8300	-4837	RC08-14-1	0.035	0.00	0.07	Buried	Mn nodule	3	1.0 cm		Clay	Foraminiferal clay, pale yellowish-brown (10YR6/2), slightly burrowed	Three manganese nodules (average size 1 cm. diameter) occur between the top and 7 cm.
RC08-14	1963-12-15	-16.5500	-22.8300	-4837	RC08-14-2	0.100	0.00	0.20	In sediment	Mn micronodule	Few			Clay	Foraminiferal clay, pale yellowish-brown (10YR6/2), slightly burrowed	Small amount of manganese micronodules were observed.
RC08-14	1963-12-15	-16.5500	-22.8300	-4837	RC08-14-3	3.800	3.80	3.80	Buried	Mn nodule	1	4.0 cm		Clay	Red clay, moderate brown (5YR3/4). Burrow mottlings of pale yellowish-brown (10YR6/2) clay richer in carbonate content occur throughout	Manganese nodule 4 cm. in diameter occurs at 380 cm.
RC08-15	1963-12-16	-19.3500	-20.5300	-4707	RC08-15-1	0.450	0.00	0.90	In sediment	Mn micronodule	Many			Clay	Manganiferous clay, moderate brown (5YR3/4), moderately compact, plastic, (red clay)	Material coarser than silt absent. Manganese micronodules abundant in silt fraction.
RC08-15	1963-12-16	-19.3500	-20.5300	-4707	RC08-15-2	3.450	3.45	3.45	Buried	Mn nodule	1	5.0 cm		Clay	Clay, manganiferous, strongly burrowed, moderate brown (5YR4/4)	Large (4-5 cm. diameter) manganese nodule occurs at 345 cm.
RC08-15	1963-12-16	-19.3500	-20.5300	-4707	RC08-15-3	2.750	0.90	4.60	In sediment	Mn micronodule	Several			Clay	Clay, manganiferous, strongly burrowed, moderate brown (5YR4/4)	Manganese micronodules occur in both units in the silt fraction.
RC08-16	1963-12-18	-23.3500	-16.5300	-4440	RC08-16-1	2.075	0.00	4.15	In sediment	Mn micronodule	Several			Clay	Calcareous clay. Alternating zones of moderate yellowish-brown (10YR5/4) and dark yellowish-brown (10YR4/2)	Manganese micronodules most common in the well mottled, dark layers.
RC08-19	1963-12-19	-24.3000	-14.7000	-3636	RC08-19-1	0.745	0.00	1.49	In sediment	Mn micronodule	Few			Clay	Foraminiferal clay, pale yellowish-brown (10YR6/2)	Micronodules of manganese are occasionally scattered throughout.
RC08-20	1963-12-19	-24.5200	-14.2200	-3446	RC08-20-1	0.440	0.23	0.65	Buried	Mn coating	Several		Consolidated sediment	Sand	Coarse sand to fine gravel, very pale orange (10YR8/2)	Low latitude planktonic foraminifera generally cemented into aggregates by iron or manganese oxides held together with calcareous clay.
RC08-21	1963-12-19	-24.7700	-13.7700	-1888	RC08-21-1	0.125	0.00	0.25	In sediment	Mn micronodule	Several			Sand	Foraminiferal sand, pale yellowish-brown (10YR6/2) grading to olive black (5Y2/1). Sediment is loose and slightly wet	Approximately 10% manganese micronodules and angular basalt rock fragments.
RC08-25	1963-12-20	-25.6700	-11.6200	-3882	RC08-25-1	0.850	0.00	1.70	In sediment	Mn micronodule	Few			Clay	Foraminiferal clay, grayish-orange (10YR7/4), moderately burrowed. The carbonate content is approximately 60% and the foraminifera content about 25%.	Small amount of manganese micronodules were also identified.
RC08-25	1963-12-20	-25.6700	-11.6200	-3882	RC08-25-2	2.595	1.70	3.49	In sediment	Mn micronodule	Few			Clay	Calcareous clay, very pale orange (10YR8/2). The carbonate content is about 90%.	Occasional manganese micronodules were observed.
RC08-26	1963-12-20	-25.9500	-11.1000	-4122	RC08-26-1	4.500	4.30	4.70	In sediment	Mn micronodule	Several			Clay	Foraminiferal clay, very pale orange (10YR7/2)	Higher content of manganese occurs either as micronodules or small specks scattered throughout.
RC08-27	1963-12-20	-26.2300	-10.6200	-3678	RC08-27-1	3.600	3.55	3.65	In sediment	Mn micronodule	Several			Ooze	Clayly foraminiferal ooze, compact, moderate yellowish-brown (10YR5A), burrow mottled, sandy	Dark gray (N3) specks of manganese dioxide occur at 355-365 cm. Sandy and silty grains of manganese and iron constitute most of the remaining sediment.
RC08-31	1963-12-23	-29.0800	-2.4500	-4605	RC08-31-1	0.350	0.29	0.41	In sediment	Mn micronodule	Several			Clay	Manganese clay, moderate yellowish-brown (10YR5/4), abundantly burrowed. The carbonate content is approximately 35-40% and the foraminifera content around 20%.	Manganese micronodules are fairly common throughout.
RC08-32	1963-12-24	-30.4300	2.3000	-3404	RC08-32-1	1.250	0.00	2.50	In sediment	Mn micronodule	Many			Clay	Calcareous clay, pale yellowish-brown (10YR6/2), moderately well mottled	Manganese micronodules common down to 100 cm., becoming very common below that. Manganese micronodules tend to occur in small, visible accumulations.
RC08-32	1963-12-24	-30.4300	2.3000	-3404	RC08-32-2	3.045	2.50	3.59	In sediment	Mn micronodule	Many			Clay	Calcareous clay, yellowish-gray (SY7/2), moderately well burrowed	Manganese micronodules common to very common.
RC08-32	1963-12-24	-30.4300	2.3000	-3404	RC08-32-3	5.345	3.59	7.10	In sediment	Mn micronodule	Several			Clay	Calcareous clay, very light gray (N8). Indistinct mottling present	Manganese micronodules common and appear to be concentrated along very indistinct laminae.
RC08-34	1963-12-27	-32.6200	11.6830	-4521	RC08-34-1	0.750	0.00	1.50	In sediment	Mn micronodule	Few			Clay	Foraminiferal clay, pale yellowish (10YR6/2) to dark yellowish-brown (10YR4/2), with abundant very pale orange (10YR8/2) mottling	A trace of silt size manganese oxide grains occur throughout this section, with a trace of very fine grained quartz.
RC08-35	1964-01-08	-38.5000	26.0830	-2922	RC08-35-1	0.580	0.08	1.08	In sediment	Mn micronodule	Several			Clay	Light brown to whitish-brown, very compact calcareous clay	Some manganese micronodules present and a few local manganese accumulations. These generally tend to form a laminae.
RC08-36	1964-01-09	-40.4300	28.9170	-4098	RC08-36-1	2.320	1.80	2.84	In sediment	Mn micronodule	Several			Clay	Intercalated layers of very pale orange (10YR8/2) foraminiferal, sandy clay (similar to 0-6 cm. layer) and pale olive (10Y6/2) silty clay	Manganese micronodules and laminae present from 180 cm. to bottom.
RC08-37	1964-01-10	-41.3200	33.2170	-4775	RC08-37-1	0.000	0.00	0.00	Surface	Mn nodule		Fragment		Clay	Dark brown clay rich in manganese debris	Fragment of manganese nodule.
RC08-37	1964-01-10	-41.3200	33.2170	-4775	RC08-37-2	3.145	1.88	4.41	In sediment	Mn micronodule	Many			Clay	Grayish orange (10YR7/4) clay, becoming light brown (5YR6/4) with depth	From 188 cm. to bottom of layer, manganese micronodules, specks and/or patches increase sharply.
RC08-38	1964-01-11	-41.8800	37.8170	-3784	RC08-38-1	2.250	2.25	2.25	Buried	Mn crust	Several	Fragment		Sand	Very pale orange (10YR8/2) sorted medium-grained foraminiferal sand	Laminae present at 225 cm. contains pieces of manganese crust.
RC08-38	1964-01-11	-41.8800	37.8170	-3784	RC08-38-2	1.505	0.00	3.01	In sediment	Mn micronodule	Many			Sand	Very pale orange (10YR8/2) sorted medium-grained foraminiferal sand	Large patches of manganese filled burrow mottlings occur at the top and throughout layer.
RC08-38	1964-01-11	-41.8800	37.8170	-3784	RC08-38-3	5.690	5.69	5.69	Buried	Mn crust	Several	Fragment		Sand	Very pale orange (10YR8/2) sorted medium-grained foraminiferal sand	Manganese fragments and a piece of steel (3cm. in length, perhaps meteoritic? ) present at 569 cm.
RC08-39	1964-01-12	-42.8800	42.3500	-4330	RC08-39-1	0.150	0.00	0.30	In sediment	Mn micronodule	Several			Clay	Very pale, orange (10YR8/2) burrowed clay with about 10-15% diatoms and sponge spicules	Small specks and micronodules of manganese present.
RC08-39	1964-01-12	-42.8800	42.3500	-4330	RC08-39-2	1.785	1.17	2.40	In sediment	Mn micronodule	Several			Clay	Variegated, very pale orange and yellowish-gray clay	Specks of manganese present.
RC08-39	1964-01-12	-42.8800	42.3500	-4330	RC08-39-3	5.905	2.70	9.11	In sediment	Mn micronodule	Several			Clay	Pale greenish-yellow (10Y8/2), burrowed clay rich in carbonate (about 70%)	Manganese specks and patches scattered throughout.
RC08-42	1964-01-15	-45.6800	54.9000	-3915	RC08-42-1	0.115	0.00	0.23	In sediment	Mn micronodule	Many			Sand	Yellowish gray (5Y8/1), poorly sorted foraminiferal sandy lutite mixed with about 20% fine-grained volcanic sand	Dark opaque material abounds throughout layer (probably manganese fragments).
RC08-42	1964-01-15	-45.6800	54.9000	-3915	RC08-42-2	5.335	3.00	7.67	In sediment	Mn micronodule	Many			Sand	Dark gray (N3) fine-grained volcanic sand mixed with about 15% clayly particles	Opaque, dark material abounds throughout layer (probably manganese).
RC08-43	1964-01-16	-48.6800	57.3670	-4319	RC08-43-1	0.000	0.00	0.00	Surface	Mn crust	1	Fragment		Clay	Very pale orange (10YR8/2) burrowed clay mixed with about 15% foraminifera	Two fragments of manganese occur at the top of layer.
RC08-43	1964-01-16	-48.6800	57.3670	-4319	RC08-43-2	4.000	0.20	7.80	In sediment	Mn micronodule	Many			Clay	Intercalated layers of pale yellowish-brown (10YR6/2) mottled clay with a small amount of diatoms and yellowish-gray (5Y7/2) diatomaceous clay	Micronodules and coarse-grained nodules of manganese and rock fragments increase with depth.
RC08-43	1964-01-16	-48.6800	57.3670	-4319	RC08-43-3	7.900	7.80	8.00	In sediment	Mn micronodule	Several			Clay	Grayish-yellow (5Y8/4) homogeneous diatomaceous clay	Sand size manganese and dark rock fragments occur throughout.
RC08-43	1964-01-16	-48.6800	57.3670	-4319	RC08-43-4	8.315	8.22	8.41	In sediment	Mn micronodule	Several			Clay	Pale yellowish-brown (10YR6/2) diatomaceous clay	About 4% manganese and rock fragments (sand size).
RC08-44	1964-01-17	-51.0700	60.3000	-4753	RC08-44-1	0.935	0.62	1.25	In sediment	Mn micronodule	Several			Ooze	Diatomaceous ooze, pale yellowish-brown (10YR5/2)	Manganese micronodules and patches occur.
RC08-44	1964-01-17	-51.0700	60.3000	-4753	RC08-44-2	2.800	2.80	2.80	Buried	Mn nodule	1	0.5 cm		Ooze	Diatomaceous ooze, dark yellowish-orange (10YR6/6)	Manganese nodule (0.5 cm. in diameter) occurs at 280 cm.
RC08-44	1964-01-17	-51.0700	60.3000	-4753	RC08-44-3	5.850	5.80	5.90	Buried	Mn nodule	Several	Fragment		Ooze	Intercalated layer of very pale orange (10YR8/2) and grayish-orange (10YR7/4) diatomaceous ooze	Fragments (0.3 cm. diameter and less) of manganese nodules occur towards bottom of layer.
RC08-44	1964-01-17	-51.0700	60.3000	-4753	RC08-44-4	6.680	6.68	6.68	Surface	Mn crust	Several	Fragment		Ooze	Diatomaceous ooze, light gray (N7), burrowed	Large patch, of manganese fragments occurs at 668 cm.
RC08-44	1964-01-17	-51.0700	60.3000	-4753	RC08-44-5	6.710	6.59	6.83	In sediment	Mn micronodule	Several			Ooze	Diatomaceous ooze, light gray (N7), burrowed	Diatoms, radiolaria, sponge spicules and manganese micronodules.
RC08-44	1964-01-17	-51.0700	60.3000	-4753	RC08-44-6	10.060	9.01	11.11	In sediment	Mn micronodule	Several			Ooze	Diatomaceous ooze, Very pale orange (10YR8/2)	Manganese fragments (less than 3 mm.) occur throughout.
RC08-45	1964-01-18	-53.0300	62.5500	-4546	RC08-45-1	0.450	0.45	0.45	Buried	Mn nodule	1	1.0 cm		Ooze	Diatomaceous ooze, light brown (5YR/6)	A small manganese nodule (1 cm. in diameter) occurs at 45 cm.
RC08-45	1964-01-18	-53.0300	62.5500	-4546	RC08-45-2	5.040	5.04	5.04	Buried	Mn nodule	Several	Fragment		Ooze	Diatomaceous ooze, pale yellowish-brown (10YR6/2), burrowed	Fragments of manganese nodules occur at bottom of layer.
RC08-45	1964-01-18	-53.0300	62.5500	-4546	RC08-45-3	7.300	7.20	7.40	In sediment	Mn micronodule	Several			Ooze	Diatomaceous ooze, medium gray ( N5), burrowed	Manganese micronodules are commonly scattered throughout.
RC08-48	1964-01-21	-53.2700	76.9170	-1099	RC08-48-1	0.155	0.00	0.31	In sediment	Mn micronodule	Many			Sand	Foraminiferal sand, light olive-gray (5Y6/1), stretched	Manganese micronodules comprise about 10% of sediment.
RC08-48	1964-01-21	-53.2700	76.9170	-1099	RC08-48-2	0.900	0.31	1.49	In sediment	Mn micronodule	Several			Clay	Sandy clay, olive-gray (5Y4/1). The carbonate content is about 60%	Manganese micronodules plus fine grained plagioclase and pyroxene crystals are scattered throughout.
RC08-48	1964-01-21	-53.2700	76.9170	-1099	RC08-48-3	2.445	2.33	2.56	In sediment	Mn micronodule	Several			Clay	Sandy clay, olive-gray (5Y4/1)	Unsorted coarse sand concentrated at 250-254 cm and consist mainly of manganese and plagioclase-pyroxene association plus occasional foraminifera tests.
RC08-49	1964-01-22	-51.0700	81.5500	-3908	RC08-49-1	8.160	6.76	9.56	In sediment	Mn micronodule	Few			Clay	Pale yellowish-brown burrowed clay mixed with about 10% sand-size rock fragments (probably basalt)	Manganese micronodules were observed.
RC08-50	1964-01-26	-44.7700	92.4170	-3219	RC08-50-1	6.980	6.98	6.98	In sediment	Mn micronodule	Several			Sand	Foraminiferal sand, very pale orange (10YR8/2)	A concentration of manganese micronodules occurs at 698 cm.
RC08-53	1964-01-29	-39.3800	104.3700	-4429	RC08-53-1	4.905	0.16	9.65	In sediment	Mn micronodule	Many			Clay	Foraminiferal clay, silty and sandy, banded, burrow mottled. Variegated brown	Silty and sandy manganese and iron oxide nodules form about 15-16%.
RC08-55	1964-01-31	-35.8200	109.9500	-5435	RC08-55-1	2.475	0.00	4.95	In sediment	Mn micronodule	Many			Clay	Manganese clay (red clay), dark yellowish-brown (10YR4/2). The carbonate content is less than 2%	Minerals consist of manganese micronodules (comprising about 10% of sediment) associated with occasional feldspar grains and volcanic glass (less than 1%).
RC08-63	1964-02-14	-51.0800	129.9700	-3442	RC08-63-1	2.090	1.95	2.23	In sediment	Mn micronodule	Many			Clay	Foraminiferal clay, pale yellowish-brown (10YR6/2) grading to moderate brown (5YR4/4) at 210 cm. Layer is well burrowed	Manganese micronodules present becoming very common with depth.
RC08-67	1964-02-18	-51.1300	152.9300	-4356	RC08-67-1	7.145	0.04	14.25	In sediment	Mn micronodule	Several			Clay	Clay. Moderate yellowish-brown (10YR5/4) grading into alight yellowish-brown below 240 cm	Some manganese micronodules present.
RC08-69	1964-02-20	-53.4800	155.6200	-4303	RC08-69-1	0.050	0.00	0.10	Buried	Mn nodule	2			Clay	Clay and diatomaceous clay, moderate yellowish-brown (10YR5/4)	Two nearly round manganese nodules
RC08-69	1964-02-20	-53.4800	155.6200	-4303	RC08-69-2	0.200	0.10	0.30	In sediment	Mn micronodule	Many			Clay	Clay and diatomaceous clay, moderate yellowish-brown (10YR5/4)	Layer is well speckled with manganese micronodules.
RC08-69	1964-02-20	-53.4800	155.6200	-4303	RC08-69-3	1.000	0.30	1.70	In sediment	Mn micronodule	Several			Clay	Clay and diatomaoeous clay, yellowish-gray (5Y7/2)	Manganese micronodules present.
RC08-70	1964-02-22	-58.0500	155.7800	-3301	RC08-70-1	5.250	0.00	10.50	In sediment	Mn micronodule	Several			Clay	Clay and diatomaceous clay, pale yellowish-brown (10YR6/2)	Manganese micronodules common throughout.
RC08-71	1964-02-22	-58.0500	155.7300	-3224	RC08-71-1	0.255	0.00	0.51	In sediment	Mn micronodule	Several			Ooze	Diatomaceous ooze, pale yellowish-brown (10YR6/2) slightly burrowed. The foraminifera content is about 20% and sponge spicules 1%	Manganese micronodules are also common.
RC08-72	1964-02-22	-58.0500	155.6500	-3232	RC08-72-1	4.240	4.18	4.30	In sediment	Mn micronodule	Several			Ooze	Calcareous diatom ooze, pinkish-gray (5YR8/l) to very pale orange (10YR8/2), ranging from compact at the top to very compact at the base	Zone of darker diatom ooze, containing manganese micronodules, occur at 418-430 cm. The bottoms of the zone shows burrowing.
RC08-72	1964-02-22	-58.0500	155.6500	-3232	RC08-72-2	6.645	6.40	6.89	In sediment	Mn micronodule	Several			Ooze	Calcareous diatom ooze, pinkish-gray (5YR8/l) to very pale orange (10YR8/2), ranging from compact at the top to very compact at the base	Zone of darker diatom ooze, containing manganese micronodules, occur at 640-689 cm. The bottoms of the zone shows burrowing.
RC08-73	1964-02-23	-56.0000	158.7700	-3362	RC08-73-1	0.185	0.00	0.37	In sediment	Mn micronodule	Many			Sand	Medium to coarse-grained sand, dark gray, coherent but friable, poorly sorted	The non-biogenous fraction consists of abundant manganese micronodules and angular to well rounded, poorly sorted quartz. Much of the quartz is stained by iron oxide.
RC08-73	1964-02-23	-56.0000	158.7700	-3362	RC08-73-2	0.435	0.37	0.50	In sediment	Mn micronodule	Many	0.2-0.4 cm		Sand	Granules (2-4 mm) of non-calcareous, indurated whitish clay	Manganese micronodules of similar size.
RC08-73	1964-02-23	-56.0000	158.7700	-3362	RC08-73-3	0.620	0.50	0.74	Buried	Mn coating	Several	3.0 cm	Pebble; consolidated sediment	Gravel		3 cm. pebbles of indurated clay in a matrix of foraminifera, manganese oxide, and terrigenous sand.
RC08-73	1964-02-23	-56.0000	158.7700	-3362	RC08-73-4	0.840	0.74	0.94	In sediment	Mn micronodule	Several			Sand	Foraminifera and detrital sand, light gray	The non-biogenous fraction consists of manganese micronodules, angular to well-rounded quartz, and heavy minerals.
RC08-73	1964-02-23	-56.0000	158.7700	-3362	RC08-73-5	1.505	0.94	2.07	Buried	Mn nodule	Several		Core; consolidated sediment	Gravel	Gravel, gray to brownish-gray	Manganese nodules, with varying admixtures of foraminiferal sand.
RC08-73	1964-02-23	-56.0000	158.7700	-3362	RC08-73-6	1.505	0.94	2.07	Buried	Mn coating	Several	3.0 cm	Pebble; consolidated sediment	Gravel	Gravel, gray to brownish-gray	Indurated clay pebbles up to 4 cm. diameter
RC08-75	1964-02-25	-53.9000	164.7200	-2102	RC08-75-1	0.950	0.00	1.90	Buried	Mn coating	Several		Shells	Marl	Calcareous marl, white to light tan, containing abundant iron oxide staining below 30 cm. (may be secondary). The sediment is loose and disaggragated	Approximately 40% of the bulk of the sediment consists of disarticulated balanid barnacle plates. Some of the barnacle plates are coated with manganese oxide.
RC08-80	1964-03-20	-48.3000	-162.9000	-4997	RC08-80-1	0.050	0.05	0.05	Buried	Mn nodule	1	2.0x3.0 cm		Clay	Clay, with smooth texture and very little burrowing	Oval and botryoidal manganese oxide nodule at 5 cm. is 2 x 3 cm. in diameter
RC08-80	1964-03-20	-48.3000	-162.9000	-4997	RC08-80-2	0.100	0.10	0.10	Buried	Mn nodule	1	4.5x6.0 cm		Clay	Clay, with smooth texture and very little burrowing	Oval and botryoidal manganese oxide nodule at 10 cm., 4.5 x 6 cm. in diameter.
RC08-80	1964-03-20	-48.3000	-162.9000	-4997	RC08-80-3	1.100	1.00	1.20	In sediment	Mn micronodule	Several			Clay	Clay, with smooth texture and very little burrowing	Lower contact gradational, based on a textural change (increased burrowing; and increasing manganese oxide micronodules.
RC08-80	1964-03-20	-48.3000	-162.9000	-4997	RC08-80-4	1.400	1.20	1.60	In sediment	Mn micronodule	Several			Clay	Clay, burrow mottled, containing some silt	Silt-sized manganese oxide micronodules.
RC08-80	1964-03-20	-48.3000	-162.9000	-4997	RC08-80-5	5.800	5.20	6.40	In sediment	Mn micronodule	Many			Clay	Clay, burrow mottled	Contains considerable number of burrows and manganese oxide micronodules.
RC08-80	1964-03-20	-48.3000	-162.9000	-4997	RC08-80-6	7.675	6.40	8.95	In sediment	Mn micronodule	Few			Clay	Clay, smooth texture, tan	Minor silt fraction and manganese oxide micronodules.
RC08-81	1964-03-21	-47.9500	-159.1000	-5130	RC08-81-1	2.150	2.10	2.20	In sediment	Mn micronodule	Several			Clay	Clay, moderate brown (57R4/4), burrowed, particularly between 80-110 cm. and between 180-200 cm.	Lower contact is gradational between 210-220 cm., marked by an increase in manganese micronodules.
RC08-81	1964-03-21	-47.9500	-159.1000	-5130	RC08-81-2	7.950	2.20	13.70	In sediment	Mn micronodule	Several			Clay	Clay, yellowish-brown (10YR5/4) manganiferous and siliceous	Manganese occurs primarily in the form of micronodules which are present throughout. Minor silt fraction and manganese oxide micronodules.
RC08-82	1964-03-22	-46.9300	-154.3000	-4308	RC08-82-1	0.025	0.00	0.05	Surface	Mn nodule	Several					Manganese nodules and fragments.
RC08-83	1964-03-23	-45.8800	-149.8000	-4738	RC08-83-1	0.050	0.00	0.10	Buried	Mn nodule	Several	Up to 7.0 cm				Core consists wholly of manganese nodules up to 7 cm. maximum dimension.
RC08-84	1964-03-25	-43.4200	-141.3000	-4314	RC08-84-1	0.025	0.00	0.05	Surface	Mn nodule	Several	Up to 5.0 cm				Core consists solely of manganese nodules and fragments, up to 5 cm.
RC08-85	1964-03-27	-41.5700	-133.2000	-5022	RC08-85-1	0.050	0.00	0.10	Buried	Mn nodule	Several	Fragment		Clay	Foraminiferal clay has a carbonate content of 75%. 10-35 Clay, pale yellowish- brown (10YR6/2), burrowed.	Manganese nodule fragments coated with foraminiferal clay.
RC08-85	1964-03-27	-41.5700	-133.2000	-5022	RC08-85-2	0.050	0.00	0.10	In sediment	Mn micronodule	Several			Clay	Foraminiferal clay has a carbonate content of 75%. 10-35 Clay, pale yellowish- brown (10YR6/2), burrowed.	Micronodules of manganese are commonly distributed throughout.
RC08-86	1964-03-28	-40.5500	-129.4000	-4852	RC08-86-1	0.000	0.00	0.00	Surface	Mn nodule	1	4.0 cm		Clay	Manganese clay, dark yellowish-brown (10YR3/2) moderately burrowed and slightly silty.	Manganese nodule (4 cm. in diameter) occurs at top.
RC08-86	1964-03-28	-40.5500	-129.4000	-4852	RC08-86-2	0.490	0.49	0.49	Buried	Mn nodule	1	4.0 cm		Clay	Manganese clay, dark yellowish-brown (10YR3/2) moderately burrowed and slightly silty.	Manganese nodule (4 cm. in diameter) occurs at 49 cm.
RC08-86	1964-03-28	-40.5500	-129.4000	-4852	RC08-86-3	0.905	0.00	1.81	In sediment	Mn micronodule	Many			Clay	Manganese clay, dark yellowish-brown (10YR3/2) moderately burrowed and slightly silty.	Manganese micronodule content is approximately 15-20%.
RC08-86	1964-03-28	-40.5500	-129.4000	-4852	RC08-86-4	2.200	1.81	2.59	In sediment	Mn micronodule	Many			Clay	Clay, moderate brown (5YR4/4) abundantly burrowed.	The manganese micronodule content is relatively high (about 10-15%).
RC08-86	1964-03-28	-40.5500	-129.4000	-4852	RC08-86-5	3.080	2.59	3.57	In sediment	Mn micronodule	Few			Clay	Calcareous clay, very pale orange (10YR8/2) slightly burrowed	Manganese micronodules are occasional and disappear at bottom of layer.
RC08-87	1964-03-29	-39.4700	-125.5000	-4583	RC08-87-1	1.125	0.00	2.25	In sediment	Mn micronodule	Many			Clay	Clay, moderate brown (5YR3/4) soft, homogeneous (red clay)	The greater than 62 micron fraction comprises less than 1% of sediment and consists of silt size manganese micronodules and rare mica flakes.
RC08-88	1964-03-30	-38.0000	-121.9000	-4583	RC08-88-1	0.200	0.00	0.40	In sediment	Mn micronodule	Several			Clay	Clay, grayish-brown (5YR3/2) with some dark yellowish-brown (10YR4/2) mottling	The mineral fraction is mainly composed of manganese micronodules and less than 1% very fine grained rounded quartz.
RC08-89	1964-03-31	-36.3800	-118.1000	-3900	RC08-89-1	0.050	0.00	0.10	In sediment	Mn micronodule	Several			Clay	Foraminiferal clay between pale and dark yellowish-brown (10YR5/2) compact and firm. Contains approximately 30% carbonate.	Approximately 20% medium to fine sand which is made up entirely of planktonic foraminifera tests with common manganese micronodules.
RC08-89	1964-03-31	-36.3800	-118.1000	-3900	RC08-89-2	0.450	0.10	0.80	In sediment	Mn micronodule	Several			Clay	Clay, between dark and dusky yellowish-brown (10YR3/2), moderately compact	5% coarse material in the form of very fine to medium sand size manganese micronodules with frequent planktonic and benthic foraminifera tests.
RC08-89	1964-03-31	-36.3800	-118.1000	-3900	RC08-89-3	1.250	0.80	1.70	In sediment	Mn micronodule	Several			Clay	Clay moderate yellowish-brown (10YR5/4) bo dark yellowishbrown (10YR4/2), compact but fairly soft	Coarse fraction makes up approximately 10% of sediment and consists of about equal amounts of silt to medium sand size manganese micronoduies and planktonic foraminifera tests.
RC08-90	1964-04-01	-34.8700	-114.8000	-3396	RC08-90-1	1.230	0.00	2.46	In sediment	Mn micronodule	Several			Clay	Foraminiferal clay, very pale orange (10YR7/2), burrowed	Micronodules of manganese (about 5%) scattered throughout with some dark patches of manganese mixed with clay abundant throughout.
RC08-90	1964-04-01	-34.8700	-114.8000	-3396	RC08-90-2	3.755	2.46	5.05	In sediment	Mn micronodule	Several			Clay	Clay, very pale orange (10YR8/2) burrowed	Manganese micronodules content seems to be greater than 5%.
RC08-90	1964-04-01	-34.8700	-114.8000	-3396	RC08-90-3	5.280	5.05	5.51	In sediment	Mn micronodule	Several			Clay	Clay, moderate yellowish-brown (10YR5/4). Carbonate content is approximately 50-60%	Manganese micronodule content greater than 5% and manganese increases gradually with depth.
RC08-94	1964-04-05	-17.2800	-35.9833	-4021	RC08-94-1	1.945	0.00	3.89	In sediment	Mn micronodule	Several			Clay	Foraminiferal sandy clay, light brown (5YR6/4), moderately burrowed. The carbonate content is approximately 65%.	Manganese micronodules were also observed. Manganese content about 5-10%.
RC08-97	1964-04-09	-16.8300	-94.1200	-2737	RC08-97-1	0.620	0.00	1.24	In sediment	Mn micronodule	Several			Ooze	Calciclayly foraminiferal ooze, compact, very light gray (N8), burrow mottled, sandy	Brownish-black granule-sized concentrations of manganese dioxide are present. Manganese and iron particles make up 6%.
RC08-98	1964-04-10	-13.4700	-92.5800	-3853	RC08-98-1	0.100	0.00	0.20	Buried	Mn crust	Several	Fragment		Sand	Foraminiferal sand, very pale orange (10YR7/2). The forarainifera content is approximately 90%.	Remainder of layer consists of manganese fragments not exceeding 1 cm, in diameter.
RC08-98	1964-04-10	-13.4700	-92.5800	-3853	RC08-98-2	0.245	0.20	0.29	Buried	Mn coating	1	Thin	Fragment; basalt	Sand	Foraminiferal sand, very pale orange (10YR7/2). The forarainifera content is approximately 90%.	Basaltic rock, dark colored with fresh fracture on one side. Basalt shows thin coating of manganese oxide.
RC08-98	1964-04-10	-13.4700	-92.5800	-3853	RC08-98-3	0.310	0.29	0.33	In sediment	Mn micronodule	Many			Clay	Manganese clay, grayish-brown (5YR3/2)	Manganese micronodules abundant throughout.
RC08-98	1964-04-10	-13.4700	-92.5800	-3853	RC08-98-4	0.460	0.33	0.59	Buried	Mn coating	1	0.5-3.0 cm	Fragment; basalt	Clay	Glassy basaltic fragments associated with manganese clay	Glassy basalt (probably fragments from a larger piece) are often coated with manganese and a thin palagonitic crust. Size of fragments vary between 0.5 cm. to 3 cm. in diameter.
RC08-99	1964-04-11	-10.6200	-91.3200	-3819	RC08-99-1	0.000	0.00	0.00	Surface	Mn nodule	Several	3.0 cm		Clay	Foraminiferal clay, moderate yellowish-brown (10YR5/4)	Manganese nodules (3 cm. diameter) occur at the top of layer
RC08-99	1964-04-11	-10.6200	-91.3200	-3819	RC08-99-2	1.300	0.00	2.60	In sediment	Mn micronodule	Many			Clay	Foraminiferal clay, moderate yellowish-brown (10YR5/4)	Micronodules of manganese are abundantly scattered throughout.
RC08-99	1964-04-11	-10.6200	-91.3200	-3819	RC08-99-3	3.975	2.60	5.35	In sediment	Mn micronodule	Many			Clay	Manganese clay (red clay), grayish-brown (5YR3/2)	The manganese content is high, consisting mainly of micronodules.
RC08-100	1964-04-12	-7.7000	-90.0300	-4140	RC08-100-1	1.955	0.11	3.80	In sediment	Mn micronodule	Few			Ooze	Diatom ooze, yellowish-gray (5Y6/2), burrowed	Manganese micronodules are occasionally scattered throughout.
RC08-100	1964-04-12	-7.7000	-90.0300	-4140	RC08-100-2	9.800	7.90	11.70	In sediment	Mn micronodule	Many			Clay	Manganese clay, dark yellowish-brown (10YR4/2), burrowed	Manganese micronodules are abundant.
RC08-102	1964-04-14	-1.4170	-86.8500	-2180	RC08-102-1	0.145	0.00	0.29	In sediment	Mn micronodule	Few			Clay	Foraminiferal clay, yellowish-gray (5Y7/2). The foraminifera content is about 40-50%. The carbonate content approximates 85%	Minor amount of sponge spicules and manganese micronodules scattered throughout.
RC08-102	1964-04-14	-1.4170	-86.8500	-2180	RC08-102-2	5.160	4.51	5.81	In sediment	Mn micronodule	Many			Clay	Foraminiferal clay, pale greenish-gellow (10Y8/2)	Manganese micronodules abundant.
RC08-103	1964-04-15	1.2670	-85.1700	-2937	RC08-103-1	0.360	0.00	0.72	In sediment	Mn micronodule	Many			Clay	Foraminiferal clay, yellowish-Â£ray (5Y7/2), burrowed	Micronodules of manganese abundant at the top of layer and are also common throughout.
RC08-106	1964-04-24	14.0000	-74.8800	-3904	RC08-106-1	1.175	0.85	1.50	In sediment	Mn micronodule	Several			Clay	Foraminiferal clay, dusky yellow (5Y6/4), burrowed	Manganese micronodules are common throughout. Patches of manganese occur at 91 cm. and 130 cm. (possibly lamina).
RC08-106	1964-04-24	14.0000	-74.8800	-3904	RC08-106-2	1.595	1.50	1.69	In sediment	Mn micronodule	Several			Clay	Foraminiferal clay, light olive gray (515/2), slightly burrowed	Manganese micronodules are also present.
RC08-107	1964-04-25	14.5500	-72.5700	-3210	RC08-107-1	0.840	0.28	1.40	In sediment	Mn micronodule	Several			Clay	Medium to mostly light brown clay. No burrowing evident	Manganese micronodules present as well as a few local manganese accumulations.
RC08-107	1964-04-25	14.5500	-72.5700	-3210	RC08-107-2	7.315	6.25	8.38	In sediment	Mn micronodule	Several			Clay	Gray green clay witb light to medium brown undertones. Burrowing present in zones throughout the layer	Manganese micronodules are present in the layer as well as local manganese accumulations.
RC08-109	1964-04-27	14.6330	-70.8300	-3760	RC08-109-1	1.340	1.20	1.48	In sediment	Mn micronodule	Several			Clay	Medium to light brown silty clay with sporadic stringers rich in foraminifera	Manganese micronodules present.
RC08-109	1964-04-27	14.6330	-70.8300	-3760	RC08-109-2	1.935	1.77	2.10	In sediment	Mn micronodule	Few			Clay	Light gray to dirty white, very compact clay	Some manganese micronodules present.
RC08-110	1964-04-27	14.6670	-70.9000	-3548	RC08-110-1	1.875	0.70	3.05	In sediment	Mn micronodule	Many			Clay	Medium to light brown, laminated clay with numerous laminae composed of foraminifera	Manganese micronodules, laminae rich in manganese as well as local accumulations of manganese present.
RC08-110	1964-04-27	14.6670	-70.9000	-3548	RC08-110-2	4.205	3.72	4.69	In sediment	Mn micronodule	Several			Clay	Light tan foraminiferal clay which contains a series of dark brown bands	Manganese oxide micronodules present.
RC08-110	1964-04-27	14.6670	-70.9000	-3548	RC08-110-3	4.205	3.72	4.69	In sediment	Mn coating	Several		Foraminifera	Clay	Light tan foraminiferal clay which contains a series of dark brown bands	Foraminifera are coated with manganese oxide.
RC08-112	1964-04-28	16.2670	-70.3300	-4012	RC08-112-1	3.815	3.40	4.23	In sediment	Mn micronodule	Many			Ooze	Foraminiferal ooze, moderate yellowish-brown (10YR5/4), moderately soft, carbonate content approximately 70%	From approximately 340 cm. the core flecked with dark concentrations of silt-size manganese oxide.
RC08-112	1964-04-28	16.2670	-70.3300	-4012	RC08-112-2	5.425	5.00	5.85	In sediment	Mn micronodule	Many			Ooze	Foraminiferal ooze, moderate yellowish-brown (10YR5/4), moderately soft, carbonate content approximately 70%	Flecking with manganese oxide occurs also from 500-585 cm.
RC08-113	1964-04-29	16.8330	-68.6700	-4746	RC08-113-1	7.700	5.40	10.00	In sediment	Mn micronodule	Several			Ooze	Foraminiferal ooze, generally grayish-orange (10YR7/4), compact, containing approximately 80% carbonate. Layer is burrowed throughout	Manganese oxide flecking occurs throughout.
RC08-114	1964-05-20	18.9830	-65.8300	-6918	RC08-114-1	1.290	0.00	2.58	In sediment	Mn micronodule	Several			Clay	Brown clay	Manganese specks and micronodules scattered throughout.
RC08-116	1964-05-22	19.1830	-66.7800	-7187	RC08-116-1	4.110	4.11	4.11	In sediment	Mn micronodule	Many			Clay	Light to moderate yellowish-brown clay	Manganese-rich layer (1-2 mm thick) with abundant manganese micronodules occur at 411 cm.
RC08-116	1964-05-22	19.1830	-66.7800	-7187	RC08-116-2	4.380	4.38	4.38	In sediment	Mn micronodule	Many			Clay	Light to moderate yellowish-brown clay	Manganese-rich layer (1-2 mm thick) with abundant manganese micronodules occur at 438 cm.
RC08-116	1964-05-22	19.1830	-66.7800	-7187	RC08-116-3	4.480	4.48	4.48	In sediment	Mn micronodule	Many			Clay	Light to moderate yellowish-brown clay	Manganese-rich layers(1-2 mm thick) with abundant manganese micronodules occur at 448 cm.
RC08-116	1964-05-22	19.1830	-66.7800	-7187	RC08-116-4	5.105	5.08	5.13	In sediment	Mn micronodule	Many			Clay	Light to moderate yellowish-brown clay	5 (or 6?) laminae rich in manganese (2 mm thick) containing manganese micronodules, fragments
RC08-116	1964-05-22	19.1830	-66.7800	-7187	RC08-116-5	5.105	5.08	5.13	In sediment	Mn coating	Several		Foraminifera	Clay	Light to moderate yellowish-brown clay	Manganese filled pelagic foraminifera.
RC08-120	1964-05-24	20.2000	-65.4000	-6916	RC08-120-1	5.485	5.00	5.97	In sediment	Mn micronodule	Several			Clay	Moderate yellowish-brown clay	Manganese sand layers (1 mm thick) at 524 cm., 527 cm., 542 cm., 561 cm., 564 cm., and 575-578 cm.
RC08-120	1964-05-24	20.2000	-65.4000	-6916	RC08-120-2	7.150	5.97	8.33	In sediment	Mn micronodule	Several			Clay	Pale to moderate yellowish-brown clay	Manganese-rich sand layers (1 mm thick) at 624 cm., and 658 cm.
RC08-4RD	1964-06-23	19.6000	-65.0666	-7260	RC08-4RD-1	0.000	0.00	0.00	Surface	Mn coating	Several		Boulder; weathered basalt	Hard ground		Dense gray black basalt chunks. Strongly weathered. Pieces of rather uniform size very angular, often, polygonal. Mn encrustation. All rock appear similar.
RC08-125	1964-06-04	20.1330	-65.1200	-6326	RC08-125-1	0.565	0.48	0.65	In sediment	Mn micronodule	Few			Clay	Light to moderate yellowish-brown clay	Some manganese specks and streaks.
RC08-126	1964-06-05	20.1170	-65.1000	-6668	RC08-126-1	0.000	0.00	0.00	Surface	Mn coating	Several		Pebble; tuff, weathered rock	Sand	Light brown, poorly sorted gravelly sand with 20% pebbles (1 to 8 cm. in diameter), 60% sand and 20% silt-clay	Pebble types are mainly tuffaceous and weathered rocks (andesites ?) frequently encrusted with manganese.
RC08-126	1964-06-05	20.1170	-65.1000	-6668	RC08-126-2	0.000	0.00	0.00	Surface	Mn coating	Several	Small	Grain; tuff, weathered rock	Sand	Light brown, poorly sorted gravelly sand with 20% pebbles (1 to 8 cm. in diameter), 60% sand and 20% silt-clay	Sand fraction consists of similar material and sand-sized manganese encrusted grains
RC08-128	1964-06-11	19.4670	-65.4300	-5338	RC08-128-1	0.275	0.00	0.55	In sediment	Mn micronodule	Several			Clay	Light brown clay with rare medium brown mottlings. Burrow tracks common	Manganese micronodules present but more common in the darker colored clay.
RC08-128	1964-06-11	19.4670	-65.4300	-5338	RC08-128-2	1.320	0.55	2.09	In sediment	Mn micronodule	Several			Clay	Medium-light brown to medium tan clay sometimes laminated. Burrow tracks present throughout	Manganese micronodules present as well as small local manganese accumulations.
RC08-128	1964-06-11	19.4670	-65.4300	-5338	RC08-128-3	4.300	3.40	5.20	In sediment	Mn micronodule	Several			Clay	A light to medium brown clay	Manganese micronodules present and numerous small, local manganese accumulations.
RC08-129	1964-06-21	21.3500	-66.1300	-5376	RC08-129-1	0.595	0.00	1.19	In sediment	Mn micronodule	Several			Clay	Medium brown to medium tan clay	Manganese micronodules present throughout.
RC08-129	1964-06-21	21.3500	-66.1300	-5376	RC08-129-2	1.345	1.19	1.50	In sediment	Mn micronodule	Many			Clay	Medium to dark brown laminated clay	Laminae are most distinct in the upper 5 cm. and the lower 10 cm. The dark colored laminae are rich in manganese and manganese micronodules occur throughout.
RC08-129	1964-06-21	21.3500	-66.1300	-5376	RC08-129-3	3.450	1.50	5.40	In sediment	Mn micronodule	Several			Clay	Light to medium brown clay	Manganese microndules present throughout.
RC08-129	1964-06-21	21.3500	-66.1300	-5376	RC08-129-4	7.675	7.00	8.35	In sediment	Mn micronodule	Several			Clay	Light to medium brown clay	Manganese micronodules present in layer as well as a few manganese-rich laminae.
RC08-129	1964-06-21	21.3500	-66.1300	-5376	RC08-129-5	10.175	10.00	10.35	In sediment	Mn micronodule	Several			Clay	Light to medium brown clay	Manganese micronodules present as well as several local manganese accumulations below 1000 cm.
RC08-130	1964-06-22	20.0830	-65.1700	-6491	RC08-130-1	1.690	0.00	3.38	In sediment	Mn micronodule	Several			Clay	Medium to slightly darker brown clay. Very little burrowing evident. The top 8 cm. is very soft.	Manganese micronodules present as well as a manganese accumulations decreasing in number near bottom.
RC08-130	1964-06-22	20.0830	-65.1700	-6491	RC08-130-2	3.895	3.38	4.41	In sediment	Mn micronodule	Several			Clay	Light to medium brown clay	Manganese micronodules present. Local manganese accumulations numerous. These are generally associated with laminae.
RC08-130	1964-06-22	20.0830	-65.1700	-6491	RC08-130-3	7.660	7.37	7.95	In sediment	Mn micronodule	Several			Clay	Mottled medium brown and gray brown clay. No burrowing tracks present	Very indistinct laminae can be seen. Manganese micronodules present.
RC08-7RD	1964-07-06	20.4833	-67.1333	-5273	RC08-7RD-1	0.000	0.00	0.00	Surface	Mn nodule	Several					Mn nodules and large rock on instrument package
RC08-135	1964-07-14	18.9170	-62.2300	-2456	RC08-135-1	0.300	0.16	0.44	In sediment	Mn micronodule	Many			Clay	Clay, compact, silty and sandy, foraminiferal and pteropodal, faintly laminated, burrow mottled. Colored light yellowish-brown (10YR6/4) to pale yellowish-brown (10YR8/2)	Laminae in part are colored medium dark gray (N4) and composed of fine silt-sized manganese micronodules.
RC08-135	1964-07-14	18.9170	-62.2300	-2456	RC08-135-2	0.925	0.59	1.26	In sediment	Mn micronodule	Many			Clay	Clay, compact, silty and sandy, slightly foraminiferal, strongly laminated, slightly burrowed, light yellowishbrown (10YR6/4)	Most of the laminae are medium dark gray (N4), 1-2 mm thick, and composed of manganese micronodules.
RC08-135	1964-07-14	18.9170	-62.2300	-2456	RC08-135-3	3.830	3.70	3.96	In sediment	Mn micronodule	Several			Clay	Clay, compact, silty and sandy, spicule bearing, dark yellowish-brown (10YR4/2)	Mica, quartz, rock fragments, iron and manganese micronodules make up 12%.
RC08-135	1964-07-14	18.9170	-62.2300	-2456	RC08-135-4	4.890	4.47	5.31	In sediment	Mn micronodule	Several			Clay	Clay, compact, silty and sandy, slightly foraminiferal, slightly burrow mottled	Quartz, rock fragments, manganese micronodules and other nonbiogenous silt and sand grains amount to 20%.
RC08-8RD	1964-07-27	20.8166	-66.9166	-4878	RC08-8RD-1	0.000	0.00	0.00	Surface	Mn nodule	Several					Manganese nodules and rock fragments.
RC08-9RD	1964-08-16	33.5466	-62.3583	-1972	RC08-9RD-1	0.000	0.00	0.00	Surface	Mn coating	Several		Fragment; weathered basalt			Sample consisted of 3 pieces of coral broken off the bottom, plus 1/2 dozen rock fragments. Rock composed of many small angular fragments of oxidized basalt? cemented together with CaCo3, coated with MnO2 on expose.
RC08-12RD	1964-08-19	36.6983	-67.9116	-4162	RC08-12RD-1	0.000	0.00	0.00	Surface	Mn nodule	Several					Atlantic sea mount Caryn Peak, near deep-sea of Hudson submarine canyon. Manganese nodule.
RC08-12RD	1964-08-19	36.6983	-67.9116	-4162	RC08-12RD-2	0.000	0.00	0.00	Surface	Mn coating	Several		Fragment; carbonate			Manganese coated fragments, clay and carbonate. Largest rock fragments > 1 ft. longest dimension.
RC08-137	1964-08-08	22.3830	-63.1800	-5784	RC08-137-1	2.425	2.30	2.55	In sediment	Mn micronodule	Many			Clay	Red clay	Black specks of manganese oxide become abundant below 230 cm.
RC08-137	1964-08-08	22.3830	-63.1800	-5784	RC08-137-2	3.235	2.77	3.70	In sediment	Mn micronodule	Many			Clay	Red clay	Frequent manganese oxide speckling present throughout.
RC08-137	1964-08-08	22.3830	-63.1800	-5784	RC08-137-3	5.910	5.85	5.97	In sediment	Mn micronodule	Many			Clay	Finely laminated clay(red clay)	Abundant manganese oxide speckling.
RC08-137	1964-08-08	22.3830	-63.1800	-5784	RC08-137-4	8.335	7.79	8.88	In sediment	Mn micronodule	Many			Clay	Red clay	Abundant manganese oxide speckling.
RC08-137	1964-08-08	22.3830	-63.1800	-5784	RC08-137-5	9.400	9.30	9.50	In sediment	Mn micronodule	Many			Clay	Thinly interlaminated red clay and quartz silt containing a trace of carbonate	Manganese oxide speckling occurs abundantly.
RC08-137	1964-08-08	22.3830	-63.1800	-5784	RC08-137-6	10.140	9.50	10.78	In sediment	Mn micronodule	Many			Clay	Red clay	Frequent manganese oxide speckling present.
RC08-140	1964-08-11	24.8830	-57.8700	-5684	RC08-140-1	3.515	0.00	7.03	In sediment	Mn micronodule	Many			Clay	Silty clay, reddish-brown (red clay), burrow mottled	2-3 percent of grains are larger than 10 microns. Silt fraction predominantly composed of micronodules of manganese.
RC08-141	1964-08-12	25.2670	-56.8000	-6192	RC08-141-1	0.200	0.10	0.30	In sediment	Mn micronodule	Several			Clay	Clay, dark yellowish-brown (10YR4/2), homogeneous, soft , plastic	Thinly laminated with dark specks probably manganese oxide.
RC08-143	1964-08-14	30.8670	-59.3800	-5616	RC08-143-1	0.000	0.00	0.00	Surface	Mn nodule	1	3.0-4.0 cm		Clay	Clay, moderate yellowish-brown (10YR5/4), grading downward to between moderate brown and dark yellowish-brown (5YR4/6)	The bulk of the top 5 cm. of sediment is made up of a 3-4 cm. diameter manganese nodule.
RC08-143	1964-08-14	30.8670	-59.3800	-5616	RC08-143-2	3.980	0.00	7.96	In sediment	Mn micronodule	Many			Clay	Clay, moderate yellowish-brown (10YR5/4), grading downward to between moderate brown and dark yellowish-brown (5YR4/6)	Abundant manganese micronodules.
RC08-144	1964-08-15	33.1000	-61.3000	-4623	RC08-144-1	2.165	1.05	3.28	In sediment	Mn micronodule	Few			Clay	Clay, brown to greenish-brown with reddish tint, containing foraminifera. Minor burrow mottling throughout	Scattered dark specks of manganese oxide throughout.
RC08-145	1964-08-16	33.5830	-62.3800	-2743	RC08-145-1	4.615	4.50	4.73	In sediment	Mn micronodule	Several			Ooze	Light tan, clayly, foraminiferal ooze. Burrow mottling throughout	Dark colored specks of manganese oxide scattered throughout.
RC08-147	1964-08-19	36.7000	-67.9500	-3387	RC08-147-1	0.110	0.10	0.12	Buried	Mn nodule	Several			Sand	Dark yellowish-brown (10YR4/2)	Broken manganese nodules, occurs between 10-12 cm.
RC08-147	1964-08-19	36.7000	-67.9500	-3387	RC08-147-2	0.645	0.64	0.65	Buried	Mn nodule	Several			Sand	Dark yellowish-brown (10YR4/2)	Broken manganese nodules, occurs between at the bottom of the layer.
RC08-148	1964-08-20	36.7330	-67.9300	-3329	RC08-148-1	0.175	0.00	0.35	Buried	Mn nodule	Several			Sand	Dark yellowish-brown (10YR4/2)	Manganese nodules mixed with about 5-10% coarse foraminiferal sand.