Hekinian, Roger; Kravitz, J; Bauchelle, D (1961): Annotated record of the detailed examination of Mn deposits recovered from dredges and cores from VEMA 17 Expedition stations [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.863922, Supplement to: Hekinian, R et al. (1961): Vema Cruise 17 - Preliminary Megascopic Descriptions of Split Cores. Lamont Geological Observatory, Columbia University, New York, unpublished, 307 pp
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
The cores and dredges described in this report were taken during the Vema 17 Expedition from December 1960 until October 1961 by the Lamont Geological Observatory, Columbia University from the R/V Vema. An approximate total of 210 cores, dredges and camera stations 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):
Coverage:
Median Latitude: -7.683045 * Median Longitude: -66.622717 * South-bound Latitude: -62.200000 * West-bound Longitude: -94.620000 * North-bound Latitude: 60.450000 * East-bound Longitude: -17.980000
Date/Time Start: 1960-12-15T00:00:00 * Date/Time End: 1961-09-27T00:00:00
Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 13.995 m
Event(s):
V17-1 * Latitude: 28.483000 * Longitude: -65.050000 * Date/Time: 1960-12-15T00:00:00 * Elevation: -5024.0 m * Recovery: 10.89 m * Campaign: V17 * Basis: Vema * 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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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 | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | Event label | Event | Hekinian, Roger | |||
2 | Sample ID | Sample ID | Hekinian, Roger | |||
3 | DEPTH, sediment/rock | Depth sed | m | Hekinian, Roger | Geocode | |
4 | Depth, top/min | Depth top | m | Hekinian, Roger | ||
5 | Depth, bottom/max | Depth bot | m | Hekinian, Roger | ||
6 | Position | Position | Hekinian, Roger | |||
7 | Deposit type | Deposit type | Hekinian, Roger | |||
8 | Quantity of deposit | Quantity | Hekinian, Roger | |||
9 | Size | Size | Hekinian, Roger | |||
10 | Substrate type | Substrate | Hekinian, Roger | |||
11 | Sediment type | Sediment | Hekinian, Roger | |||
12 | Comment | Comment | Hekinian, Roger | |||
13 | Description | Description | Hekinian, Roger |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1884 data points
Data
1 Event | 2 Sample ID | 3 Depth sed [m] | 4 Depth top [m] | 5 Depth bot [m] | 6 Position | 7 Deposit type | 8 Quantity | 9 Size | 10 Substrate | 11 Sediment | 12 Comment | 13 Description |
---|---|---|---|---|---|---|---|---|---|---|---|---|
V17-1 | V17-1-1 | 1.550 | 0.00 | 3.10 | In sediment | Mn micronodule | Several | Clay | Clay, Light brown (5YR6/4) manganese clay mixed with about 15-20% carbonate | Manganese micronodules and small specks scattered throughout. | ||
V17-2 | V17-2-1 | 2.550 | 0.20 | 4.90 | In sediment | Mn micronodule | Several | Clay | Clay. Pale brovm (5YR5/2). The entire core is lightly speckled with manganese | 0-490 Clay. Pale brovm (5YR5/2). The entire core is lightly speckled with manganese. Manganese micronodules make up the sand fraction below 20 cm. | ||
V17-5 | V17-5-1 | 0.225 | 0.00 | 0.45 | In sediment | Mn micronodule | Several | Clay | Silty clay, grayish-orange (10YR7/4) | Manganese micronodules present throughout. | ||
V17-5 | V17-5-2 | 0.890 | 0.81 | 0.97 | In sediment | Mn micronodule | Few | Clay | Silty clay, very pale orange (10YR8/2) mottled with grayish-orange (10YR7/4). Some burrowing present. Other mottling may be due to reworking | Manganese micronodules present. | ||
V17-5 | V17-5-3 | 1.080 | 1.08 | 1.08 | Buried | Mn nodule | 1 | Core | Clay | Silty clay, grayish-orange (10YR7/4) | A manganese coated nodule occurs at 108 cm. | |
V17-6 | V17-6-1 | 0.175 | 0.00 | 0.35 | In sediment | Mn micronodule | Several | Clay | Clay. Medium gray (N5) | Manganese micronodules are present throughout. Visible manganese accumulations occur above 15 cm. | ||
V17-6 | V17-6-2 | 1.085 | 0.55 | 1.62 | In sediment | Mn micronodule | Few | Clay | Clay. Medium dark gray (N4) | Manganese micronodules present. | ||
V17-8 | V17-8-1 | 0.150 | 0.00 | 0.30 | In sediment | Mn coating | Several | Foraminifera | Sand | Foraminiferal clayly sand. Pale greenish yellow (10Y8/2) | Some of the foraminifera tests are filled with manganese. | |
V17-8 | V17-8-2 | 2.330 | 1.01 | 3.65 | In sediment | Mn micronodule | Several | Clay | Clay. Rich in carbonate and burrowed. Pale greenish-yellow (10Y8/2) | Micronodules of manganese and greenish-brown glauconite grains also noticed throughout. | ||
V17-9 | V17-9-1 | 0.095 | 0.00 | 0.19 | In sediment | Mn micronodule | Few | Clay | Light to medium brown foraminiferal clay | Manganese micronodules present. | ||
V17-10 | V17-10-1 | 0.270 | 0.00 | 0.54 | In sediment | Mn micronodule | Several | Clay | Silty clay grayish-orange (10YR7/4). The carbonate content is about 25-35% | Micronodules and patches of manganese occur throughout. | ||
V17-10 | V17-10-2 | 1.220 | 0.54 | 1.90 | In sediment | Mn micronodule | Several | Sand | Foraminiferal sand. Yellowish-gray (5Y7/2) medium grained and moderately sorted | Micronodules of manganese are scattered throughout. | ||
V17-11 | V17-11-1 | 0.265 | 0.18 | 0.35 | In sediment | Mn micronodule | Several | Clay | Foraminiferal clay. Pale yellowish (10YR8/6) | Specks and micronodules of manganese are commonly scattered throughout. | ||
V17-12 | V17-12-1 | 0.195 | 0.00 | 0.39 | In sediment | Mn micronodule | Few | Clay | Silty clay. Greenish-gray (5GY6/1). No burrowing | Manganese micronodules present. | ||
V17-12 | V17-12-2 | 0.430 | 0.39 | 0.47 | In sediment | Mn micronodule | Few | Clay | Silty clay, very hard, dark gray (N3) | Layer is laminated. Few manganese micronodules present. | ||
V17-12 | V17-12-3 | 1.645 | 0.47 | 2.82 | In sediment | Mn micronodule | Several | Clay | Clay, olive gray (5Y4/1). No borrowing | Manganese micronodules present throughout. | ||
V17-14 | V17-14-1 | 2.800 | 0.25 | 5.35 | In sediment | Mn micronodule | Several | Clay | Clay, soft, greenishs-grey with about 10-15% of carbonate. Very small amount of foraminifera | Specks of manganese scattered throughout. | ||
V17-15 | V17-15-1 | 0.090 | 0.00 | 0.18 | In sediment | Mn micronodule | Several | Clay | Foraminiferal clay, moderate yellowish-brown (10YR4/4) silty and moderately sorted | The only mineral distinguishable seems to be the micronodules of manganese. | ||
V17-14 | V17-150 | 0.300 | 0.22 | 0.38 | In sediment | Mn rich layer | 1 | Clay | Foraminiferal clay, moderate yellowish-brown (10YR4/4) burrowed and silty | The manganese content is about 15-20%. | ||
V17-13 | V17-151 | 0.490 | 0.38 | 0.60 | In sediment | Mn micronodule | Few | Clay | Foraminiferal clay, pale reddish-brown (10R5/4) and burrowed | Manganese micronodules occur occasionally. | ||
V17-16 | V17-16-1 | 0.120 | 0.00 | 0.24 | In sediment | Mn micronodule | Few | Clay | Clay, slightly silty, very pale orange (10YR8/2). Some burrowing present | Few manganese micronodules present. | ||
V17-17 | V17-17-1 | 0.230 | 0.00 | 0.46 | In sediment | Mn micronodule | Several | Clay | Clay anf foraminiferal clay | Manganese micronodules present throughout. | ||
V17-17 | V17-17-2 | 2.305 | 0.46 | 4.15 | In sediment | Mn micronodule | Several | Clay | Clay, light olive-gray | Manganese micronodules present as well as scattered maganese accumulations. | ||
V17-18 | V17-18-1 | 0.300 | 0.00 | 0.60 | In sediment | Mn micronodule | Many | Clay | Silty foraminiferal clay, grayish-orange (10YR7/4), poorly sorted and burrowed. Carbonate amount is about 80% | Specks and micronodules of manganese abound throughout. | ||
V17-19 | V17-19-1 | 0.345 | 0.19 | 0.50 | In sediment | Mn micronodule | Several | Clay | Foraminiferal silty clay, grayish-orange (10YR7/4) with a high percentage of foraminifera in the top area | Manganese patches and micronodules occur throughout. | ||
V17-20 | V17-20-1 | 0.475 | 0.37 | 0.58 | In sediment | Mn micronodule | Several | Clay | Calcareous clay, dark yellowish-brown (10YR4)/2) containing less than 5% foraminifera | Moderate amount of manganese micronodules in silt laminae. | ||
V17-20 | V17-20-2 | 0.985 | 0.89 | 1.08 | In sediment | Mn micronodule | Few | Clay | Calcareous clay, grayish-red (10R4/2) | Patches of manganese micronodules. | ||
V17-20 | V17-20-3 | 1.190 | 1.08 | 1.30 | In sediment | Mn micronodule | Few | Clay | Calcareous clay, moderately mottled, grading from pale yellowish-brown (10YR6/2) to light olive gray (5Y6/1) | Small amount of manganese micronodules present. | ||
V17-20 | V17-20-4 | 2.555 | 1.30 | 3.81 | In sediment | Mn micronodule | Several | Clay | Clay, dark yellowish-brown (10YR4/2) to olive gray (5Y4)/1) | Manganese micronodules found throughout. | ||
V17-20 | V17-20-5 | 3.825 | 3.81 | 3.84 | In sediment | Mn micronodule | Many | Sand | Fine sand laminae, with bands of dark gray (M3) | Containing approximately 50% manganese micronodules | ||
V17-21 | V17-21-1 | 1.400 | 1.35 | 1.45 | In sediment | Mn micronodule | Few | Clay | Clay, sandy, light olive gray (5Y6/1) | Sand composed of foraminifera, pteropod fragments, a few radiolaria and manganese micronodules. | ||
V17-21 | V17-21-2 | 4.430 | 4.42 | 4.44 | In sediment | Mn micronodule | Few | Sand | Bioclastic sand, clayly, white | Contains a few manganese micronodules, mica flakes and some bryozoa fragments. | ||
V17-22 | V17-22-1 | 2.215 | 2.11 | 2.32 | Buried | Mn coating | Several | Pebble | Silt | Silt, crumbly. Pale yellowish-orange (10YR8/6) color. | With manganese pebbles. | |
V17-23 | V17-23-1 | 4.280 | 3.76 | 4.80 | In sediment | Mn rich layer | 1 | Sand | Medium clastic sand, laminated, yellowish-gray (5Y8/1), sorted and graded | Darker laminae of clastic sand richer in foraminifera tests filled with manganese oxide occur throughout. | ||
V17-25 | V17-25-1 | 1.535 | 1.32 | 1.75 | In sediment | Mn micronodule | Many | Clay | Foraminiferal clay, moderately mottled, pale grayish-orange (10YR7/2) grading with depth into calcareous sand | Manganese micronodules abundant. | ||
V17-25 | V17-25-2 | 3.155 | 3.01 | 3.30 | In sediment | Mn micronodule | Many | Clay | Clay, grayish-orange (10YR7/4) grading with, depth to very fine sand, very pale orange (10YR8/2) | Contains approximately 10% foraminifera and manganese micronodules. | ||
V17-25 | V17-25-3 | 4.055 | 4.00 | 4.11 | In sediment | Mn micronodule | Many | Clay | Clay, light olive gray (5Y6/1) grading with depth into alternating laminae of light gray (N7) calcareous sand and silt | Manganese micronodules abundant. | ||
V17-25 | V17-25-4 | 13.495 | 13.31 | 13.68 | In sediment | Mn micronodule | Several | Clay | Calcareous clay, yellowish-gray (5Y8/1) to greenish-black (5Y2/1) | Manganese micronodules throughout. | ||
V17-25 | V17-25-5 | 13.995 | 13.88 | 14.11 | In sediment | Mn micronodule | Several | Clay | Calcareous clay, pale olive (10Y6/2) | Manganese micronodules and volcanic glass occur in silt laminae. | ||
V17-26 | V17-26-1 | 0.470 | 0.11 | 0.83 | In sediment | Mn micronodule | Many | Clay | Clay, sorted, very light gray (N/8). Carbonate content is around 20% | Manganese micronodules comprise about 10% of sediment. | ||
V17-26 | V17-26-2 | 2.475 | 2.47 | 2.48 | In sediment | Mn micronodule | Many | Sand | Foraminiferal, medium-grained sand | The bottom of the sand layer appears rich in manganese micronodules. | ||
V17-26 | V17-26-3 | 2.630 | 2.48 | 2.78 | In sediment | Mn micronodule | Many | Clay | Clay, sorted, light olive gray (5Y4/2), without any trace of burrowing action | Micronodules of manganese also abundant throughout. | ||
V17-26 | V17-26-4 | 13.200 | 13.02 | 13.38 | In sediment | Mn micronodule | Many | Sand | Laminated sand, light olive gray (5Y6/1) | Manganese micronodules abundant (approximately 20%). | ||
V17-27 | V17-27-1 | 0.680 | 0.00 | 1.36 | In sediment | Mn micronodule | Few | Clay | Foraminiferal silty clay, grayish-orange (10YR7/4) with several lighter colored burrow mottlings. The carbonate content is about 65-75% | Small amount of manganese micronodules occur. | ||
V17-27 | V17-27-2 | 1.365 | 1.36 | 1.37 | Buried | Mn nodule | 1 | 5.0 cm | Clay | Manganese-rich layer, dark yellowish-brown (10YR4/2), unsorted, mixed with foraminiferal clay | Vesiculated basalt seems to have coated a manganese nodule, the bulk size is about 5 cm. in diameter and occurs at the top of the layer. | |
V17-27 | V17-27-3 | 1.365 | 1.36 | 1.37 | Buried | Mn nodule | Several | 3.0 cm (fragment) | Clay | Manganese-rich layer, dark yellowish-brown (10YR4/2), unsorted, mixed with foraminiferal clay | Manganese fragments averaging 3 cm, in diameter occur at top of layer. Fragments decrease with depth. | |
V17-27 | V17-27-4 | 2.065 | 2.01 | 2.12 | Buried | Mn nodule | Several | Core; pumice | Clay | Foraminifera silty clay, grayish-orange (10YR7/4) | Pumaceous pebbles (5 mm in diameter) and manganese fragments occur at 201-212 cm. | |
V17-27 | V17-27-5 | 2.800 | 2.50 | 3.10 | Buried | Mn nodule | Several | Core; pumice | Clay | Foraminifera silty clay, grayish-orange (10YR7/4) | Pumaceous pebbles (5 mm in diameter) and manganese fragments occur at 250-310 cm. | |
V17-29 | V17-29-1 | 0.125 | 0.00 | 0.25 | In sediment | Mn micronodule | Several | Clay | Clay, pale brown (5YR5/2) | Manganese micronodules and mica flakes. | ||
V17-29 | V17-29-2 | 0.280 | 0.28 | 0.28 | In sediment | Mn micronodule | Many | Sand | Lamina of very fine foraminiferal gray sand | Abundant manganese micronodules. | ||
V17-29 | V17-29-3 | 1.895 | 1.51 | 2.28 | In sediment | Mn micronodule | Several | Clay | Clay, pale brown (5YR5/2) | Manganese micronodules and mica flakes, particularly in intercalated sand layers. | ||
V17-29 | V17-29-4 | 3.715 | 2.28 | 5.15 | In sediment | Mn rich layer | 1 | Clay | Clay, medium dark bluish-gray (5B4/1), slightly mottled and burrowed intercalated with sand layers | Sand zones are composed approximately 60% quartz, 20% manganese, 5% mica and 15% assorted mineral. | ||
V17-29 | V17-29-5 | 5.455 | 5.15 | 5.76 | In sediment | Mn micronodule | Many | Clay | Clay, medium light gray (N6), becoming darker in color with depth. Carbonate content approximately 10% | Manganese micronodules abundant. | ||
V17-29 | V17-29-6 | 7.725 | 7.70 | 7.75 | In sediment | Mn rich layer | 1 | Sand | Gray clayly sand layer | Contains approximately 80% quartz and 20% manganese | ||
V17-29 | V17-29-7 | 8.200 | 8.08 | 8.32 | In sediment | Mn rich layer | 1 | Sand | Sand layers | Composed of approximately 50% quartz, approximately 10% manganese, and 10% mica. | ||
V17-30 | V17-30-1 | 0.070 | 0.00 | 0.14 | In sediment | Mn micronodule | Several | Clay | Foraminiferal clay, pale brown (5YR5/2) poorly sorted and burrowed. The carbonate content is about 60% | Manganese micronodules scattered throughout. | ||
V17-30 | V17-30-2 | 1.390 | 1.35 | 1.43 | In sediment | Mn micronodule | Few | Sand | Foraminiferal sand, yellowish-gray (5Y8/1) medium-grained and sorted | Occasional micaceous flakes and micronodules of manganese are scattered throughout. | ||
V17-31 | V17-31-1 | 0.370 | 0.00 | 0.74 | In sediment | Mn micronodule | Several | Clay | Clay, dark yellowish-brown (10YR5/2), moderately mottled and burrowed throughout | Manganese micronodules present and manganese content increases with depth. | ||
V17-31 | V17-31-2 | 1.730 | 0.74 | 2.72 | In sediment | Mn micronodule | Several | Clay | Clay, light olive gray (5GY6/1). Carbonate content is approximately 25% | Microlaminae of foraminferal lutite with pteropod test fragments and manganese micronodules are present throughout. | ||
V17-34 | V17-34-1 | 0.390 | 0.36 | 0.42 | In sediment | Mn micronodule | Many | Clay | Silty clay, pale yellowish-brown (10TR6/2) grading to yellowish-gray (5Y6/2) with depth. Moderate amount of burrowing and mottling throughout | Manganese micronodules abundant throughout with concentration of manganese from 36-42 cm. | ||
V17-34 | V17-34-2 | 5.340 | 4.98 | 5.70 | In sediment | Mn micronodule | Several | Clay | Clay, yellowish-gray (5Y7/2) with 15% fine-grained foraminifera scattered throughout | Micronodules present throughout. | ||
V17-36 | V17-36-1 | 1.015 | 0.00 | 2.03 | In sediment | Mn micronodule | Several | Clay | Foraminiferal clay, moderate yellowish-brown (10YR5/4), moderately sorted and burrowed. The carbonate content is about 70-75% | Manganese micronodules and small patches scattered throughout. | ||
V17-36 | V17-36-2 | 3.510 | 3.21 | 3.81 | In sediment | Mn micronodule | Many | Clay | Foraminiferal clay, grayish-orange (10YR7/4), sorted and burrowed. The foraminifera oontent is about 30-355%, test sizes vary between fine-grained to medium-grained | Manganese micronodules and patches abundant throughout. | ||
V17-37 | V17-37-1 | 2.350 | 0.00 | 4.70 | In sediment | Mn micronodule | Several | Clay | Foraminiferal clay, moderate yellowish-brown (10YR/4) burrowed and moderately sorted. The carbonate content is approximately 75-80% | Manganese oxide occurs as micronodules and small patches. | ||
V17-37 | V17-37-2 | 6.495 | 4.72 | 8.27 | In sediment | Mn micronodule | Many | Clay | Foraminiferal clay, light olive gray (5Y6/1), burrowed. Carbonate content is about 75% and the foraminifera content about 35% | Manganese content is about 15%, occurring as small specks and micronodules. | ||
V17-38 | V17-38-1 | 2.925 | 1.55 | 4.30 | In sediment | Mn micronodule | Many | Clay | Clay, grayish-orange (10YR7/4), moderately mottled and burrowed | Manganese micronodules and patches abundant throughout. Manganese concentrations in the form of patches. | ||
V17-39 | V17-39-1 | 0.340 | 0.00 | 0.68 | In sediment | Mn micronodule | Many | Clay | Foraminiferal clay, dark yellowish-brown (10YR4/2) grading to clay, moderate yellowish-brown (10YR5/4) | Manganese micronodules concentrated in layers occur from 19-35 cm., 40-44 cm., and 50-53 cm. | ||
V17-40 | V17-40-1 | 5.360 | 0.00 | 10.72 | In sediment | Mn micronodule | Several | Clay | Clay, grayish-olive green (5GY3/&). Neither carbonate nor foraminifera were observed | Throughout are found manganese micronodules, which comprise about 6-10% of sediment. Occasional small white specks of volcanic ash occur, probably due to burrowing. | ||
V17-41 | V17-41-1 | 1.050 | 0.00 | 2.10 | In sediment | Mn micronodule | Many | Clay | Clay, greyish olive green (5GY3/2), occasionally burrowed with lighter green clay. No trace of carbonate or foraminifera were seen | Micronodules of manganese (about 10%) were encountered throughout. | ||
V17-45 | V17-45-1 | 0.040 | 0.00 | 0.08 | In sediment | Mn micronodule | Several | Clay | Clay, light olive gray (5Y5/2), extensively burrowed. Heavy oxidation (secondary) occurs at 0-8 cm | The zone is mottled with dark brown spots containing manganese micronodules. | ||
V17-46 | V17-46-1 | 1.845 | 1.79 | 1.90 | In sediment | Mn micronodule | Several | Clay | Clay, pale greenish-yellow (10Y8/2) | Poorly sorted and mixed with manganese micronodules. | ||
V17-46 | V17-46-2 | 1.845 | 1.79 | 1.90 | Buried | Mn nodule | Several | Clay | Clay, pale greenish-yellow (10Y8/2) | Some Mn nodules. | ||
V17-46 | V17-46-3 | 3.585 | 2.69 | 4.48 | In sediment | Mn micronodule | Several | Clay | Moderate yellowish-brown (10YR5/4) clay, burrowed. The carbonate content estimated to be around 25-30% | Micronodules of manganese and angular, very fine-grained quartz were observed throughout. | ||
V17-46 | V17-46-4 | 5.420 | 5.42 | 5.42 | Buried | Mn nodule | 1 | 1.0 cm | Clay | Manganese clay (red clay) grayish-brown (5YR3/2) | A black nodule (1 cm. diameter) of manganese occurs. | |
V17-47 | V17-47-1 | 0.220 | 0.00 | 0.44 | In sediment | Mn micronodule | Many | Clay | Clay, moderate brown (5YR5/4). Foraminifera content less than 1% | Rioh in manganese micronodules. | ||
V17-48 | V17-48-1 | 0.225 | 0.15 | 0.30 | In sediment | Mn micronodule | Several | Silt | Silt, yellowish-brown (10YR5/2). No foraminifera or carbonate evident | Silt grained quartz and manganese micronodules occur. | ||
V17-49 | V17-49-1 | 2.950 | 0.00 | 5.90 | In sediment | Mn rich layer | 1 | Clay | Silty clay, pale brown (5YR5/2) laminated. The carbonate content is approximately 15-20% | The silt and sand-grained fragments make up about 15% of the sediment and consist mainly of manganese oxide, olivine and oligoclase. | ||
V17-52 | V17-52-1 | 2.140 | 2.14 | 2.14 | In sediment | Mn micronodule | Many | Ash | Ash layer composed of what appears to be two laminae occurs at 214 cm. The top ash lamina is very light gray (N8) and the bottom ash lamina is medium light gray (N6) | Increase in the percentage of the manganese micronodules. | ||
V17-54 | V17-54-1 | 1.650 | 0.00 | 3.30 | In sediment | Mn micronodule | Several | Clay | Clay, grayish-olive (10Y4/2), moderately burrowed | Chloritic flakes and manganese micronodules were observed, they amount to approximately 5-10% of layer. | ||
V17-54 | V17-54-2 | 4.140 | 3.30 | 4.98 | In sediment | Mn rich layer | 1 | Clay | Clay, dark yellowish-brown (10YRls/2), laminated and burrowed | The laminae (1-2 mm thick) consist of dusky yellowish-brown (10YR2/2) very fine grained clastic sand rich in manganese. | ||
V17-55 | V17-55-1 | 0.055 | 0.00 | 0.11 | In sediment | Mn micronodule | Several | Silt | Clayly silt, light olive-ray (SYS/2), moderately sorted. Clay comprises 36% of sediment. Carbonate content is around 20% | The silt particles consist of angular quartz, feldspar, amphiboles and manganese micronodules. | ||
V17-56 | V17-56-1 | 1.825 | 0.00 | 3.65 | In sediment | Mn micronodule | Several | Clay | Clay, light olive gray (5Y5/1), having carbonate content of approximately 15-20%. No foraminifera were observed | Manganese micronodules occur throughout. | ||
V17-56 | V17-56-2 | 4.615 | 4.27 | 4.96 | In sediment | Mn micronodule | Several | Clay | Clay, light olive gray (5Y5/2), burrowed. Carbonate content is approximately 25% with about 10% foraminifera | Manganese micronodules and patches scattered throughout. | ||
V17-61 | V17-61-1 | 0.050 | 0.00 | 0.10 | In sediment | Mn micronodule | Several | Clay | Silty clay, olive gray (5Y3/2) | Mineral composition accounts for approximately 35% of zone including quartz, muscovite, biotite, dark heavy minerals and manganese micronodules. | ||
V17-66 | V17-66-1 | 2.790 | 0.00 | 5.58 | In sediment | Mn micronodule | Few | Clay | Clay and sily clay, grayish-olive (10Y4/2) | Manganese micronodules lightly scattered throughout. | ||
V17-70 | V17-70-1 | 1.925 | 0.00 | 3.85 | In sediment | Mn micronodule | Several | Clay | Clay, olive-gray (5Y4/1). From 0-280 cm. the layer is tinted brown due to oxidation stains. Very low calcium carbonate content | Manganese present in form of micronodules. | ||
V17-83 | V17-83-1 | 2.010 | 0.65 | 3.37 | In sediment | Mn micronodule | Few | Clay | Clay, medium gray (N5), sorted and soft. No trace of carbonate found | Occasional manganese micronodules were seen. | ||
V17-84 | V17-84-1 | 0.085 | 0.00 | 0.17 | In sediment | Mn micronodule | Few | Clay | Clay, sorted, medium gray (N5). No trace of carbonate observed. No burrow mottling | Small amount of manganese micronodules are scattered throughout. | ||
V17-84 | V17-84-2 | 4.490 | 0.17 | 8.81 | In sediment | Mn micronodule | Many | Clay | Clay, sorted, grayish olive (10Y5/2). The carbonate content is approximately 5-15%. No foraminifera were observed | Manganese micronodules and small patches abound throughout. | ||
V17-84 | V17-84-3 | 10.920 | 10.65 | 11.19 | In sediment | Mn micronodule | Few | Clay | Clay, medium gray (N5), microlaminated. No trace of carbonate evident | The microlaminae consist of silt particles of quartz and a small amount of manganese fragments. | ||
V17-40SBT | V17-40SBT-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | 2.0-4.0 cm | Manganese nodules 1-10 cm in diameter most 2-4 cm in diameter. Bottom fauna: Red shrimp, bryozoan, worm. | |||
V17-41SBT | V17-41SBT-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | Small | Sand | Coarse sand | Small pebbles composed of manganese. | |
V17-41SBT | V17-41SBT-2 | 0.000 | 0.00 | 0.00 | Surface | Mn coating | Several | Large | Pebble; graywacke | Sand | Coarse sand | Large manganese coated pebbles of graywacke(?). Bottom fauna: Scaphopod, Ophiuroid, flat worm. |
V17-42SBT | V17-42SBT-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | Small | Small manganese nodules. | |||
V17-42SBT | V17-42SBT-2 | 0.000 | 0.00 | 0.00 | Surface | Mn coating | Several | 0.5-4.0 cm | Pebble; granite | Angular manganese coated granitic pebbles 0.5 cm-4 cm in diameter | ||
V17-88 | V17-88-1 | 7.180 | 6.66 | 7.70 | In sediment | Mn micronodule | Many | Clay | Clay, tan, diatomaceous. Layer becomes increasingly reddish-brown toward the bottom of the core due to increase in manganese. Abundant burrow mottling. | Abundant manganese micronodules. | ||
V17-89 | V17-89-1 | 1.040 | 1.04 | 1.04 | Buried | Mn nodule | Several | 0.1-1.0 cm | Clay | Burrow mottled clay in various shades of tan, reddish brown and yellowish brown | Layer of poorly developed nodules occur at 104 cm (0.1-1.0 cm diam.). | |
V17-89 | V17-89-2 | 1.230 | 1.23 | 1.23 | Buried | Mn nodule | Several | 0.1-1.0 cm | Clay | Burrow mottled clay in various shades of tan, reddish brown and yellowish brown | Layer of poorly developed nodules occur at 123 cm (0.1-1.0 cm diam.). | |
V17-89 | V17-89-3 | 1.370 | 1.28 | 1.46 | Buried | Mn nodule | Several | 0.1-1.0 cm | Clay | Burrow mottled clay in various shades of tan, reddish brown and yellowish brown | Layer of poorly developed nodules scattered between 128 and 146 cm (0.1-1.0 cm diam.). | |
V17-89 | V17-89-4 | 2.190 | 1.63 | 2.75 | Buried | Mn nodule | Several | 0.1-1.0 cm | Clay | Burrow mottled clay in various shades of tan, reddish brown and yellowish brown | Layer of poorly developed nodules scattered between 163 and 275cm (0.1-1.0 cm diam.). | |
V17-89 | V17-89-5 | 3.370 | 3.37 | 3.37 | Buried | Mn nodule | 5 | 1.5-5.0 cm | Clay | Burrow mottled clay in various shades of tan, reddish brown and yellowish brown | Five large nodules from 1.5-5.0 cm in diameter at 337cm. | |
V17-90 | V17-90-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | 1.0-1.5 cm | Clay | Medium dull mustard yellow-brown clay. Possibly a thin layer of a lighter grayer clay at surface which has been destroyed by coring | Small manganese nodules (10-15mm.) on surface. | |
V17-90 | V17-90-2 | 0.095 | 0.00 | 0.19 | In sediment | Mn micronodule | Few | Clay | Medium dull mustard yellow-brown clay. Possibly a thin layer of a lighter grayer clay at surface which has been destroyed by coring | Manganese and/or other silt-sized dark grains are mixed through this core and comprise from 2-7% of the clay. | ||
V17-90 | V17-90-3 | 0.550 | 0.55 | 0.55 | Buried | Mn nodule | 1 | Large | Clay | Tan and reddish burrowed silty clay | Large nodule at 55cm. | |
V17-90 | V17-90-4 | 1.550 | 1.55 | 1.55 | Buried | Mn nodule | 1 | Large | Clay | Tan and reddish burrowed silty clay | Large nodule at 155 cm. | |
V17-90 | V17-90-5 | 1.700 | 1.70 | 1.70 | Buried | Mn nodule | 1 | Large | Clay | Tan and reddish burrowed silty clay | Large nodule at 170 cm. | |
V17-90 | V17-90-6 | 1.900 | 1.90 | 1.90 | In sediment | Mn micronodule | Many | Clay | Tan and reddish burrowed silty clay | There is a layer of manganese specks at 190cm. | ||
V17-92 | V17-92-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 2 | 3.0-5.0 cm | Clay | Light brown generally soft clay containing a silt to granule size coarse fraction. Rock fragments dominate the large particles and quartz and glass shards the finer | Two irregular large(5 and 3 cm.) manganese nodules are at the extreme top of the core. | |
V17-92 | V17-92-2 | 0.670 | 0.67 | 0.67 | Buried | Mn nodule | 1 | 2.0 cm | Clay | Light brown generally soft clay containing a silt to granule size coarse fraction. Rock fragments dominate the large particles and quartz and glass shards the finer | At 67cm is a 2cm. true Mn nodule similar to those at the top. | |
V17-92 | V17-92-3 | 0.670 | 0.67 | 0.67 | Buried | Mn coating | 1 | 6.0 cm | Fragment; volcanics | Clay | Light brown generally soft clay containing a silt to granule size coarse fraction. Rock fragments dominate the large particles and quartz and glass shards the finer | A manganese coated, black vesicular semi-angular fragment of volcanic material measuring 6cm. at 67cm. |
V17-92 | V17-92-4 | 3.150 | 3.15 | 3.15 | Buried | Mn nodule | 1 | Large | Core; consolidated sediment | Clay | Light brown generally soft clay containing a silt to granule size coarse fraction. Rock fragments dominate the large particles and quartz and glass shards the finer | A large altered manganese nodule occurs at 315 cm. This nodule is easily friable mixture of manganese and clay. |
V17-92 | V17-92-5 | 6.430 | 6.43 | 6.43 | Buried | Mn nodule | 1 | 3.0 cm (fragment) | Core; consolidated sediment | Clay | Darker brown clay essentially similar to the overlying layer but with an increased manganese fraction | A large (about 3cm) altered manganese nodule of clay/manganese are at 643 cm. |
V17-92 | V17-92-6 | 6.610 | 6.61 | 6.61 | Buried | Mn nodule | 1 | 3.0 cm (fragment) | Core; consolidated sediment | Clay | Darker brown clay essentially similar to the overlying layer but with an increased manganese fraction | A large (about 3cm) altered manganese nodule of clay/manganese are at 661 cm. |
V17-92 | V17-92-7 | 6.720 | 6.72 | 6.72 | Buried | Mn nodule | 1 | 3.0 cm (fragment) | Core; consolidated sediment | Clay | Darker brown clay essentially similar to the overlying layer but with an increased manganese fraction | A large (about 3cm) altered manganese nodule of clay/manganese are at 672 cm. |
V17-93 | V17-93-1 | 1.810 | 1.81 | 1.81 | Buried | Mn nodule | 2 | 1.5 cm | Clay | Mottled buff to reddish brown clay with a silt to granule size coarse fraction consisting of mainly quartz, dark basic rocks and volcanic glass shards | An altered friable clayey, 15mm manganese nodule is at 181cm. | |
V17-93 | V17-93-2 | 2.385 | 0.35 | 4.42 | Buried | Mn coating | Many | 2.0-4.0 cm | Pebble; basalt | Clay | Mottled buff to reddish brown clay with a silt to granule size coarse fraction consisting of mainly quartz, dark basic rocks and volcanic glass shards | Larger(2-4 cm) subangular pebbles of basalt covered with manganese occur at 35, 106, 217, 249, 255, 293, 376 and 442cm. Frequently associated with smaller (2-5 mm) basaltic pebbles also covered with manganese sometimes cemented. |
V17-93 | V17-93-3 | 3.190 | 0.00 | 6.38 | In sediment | Mn micronodule | Several | Clay | Mottled buff to reddish brown clay with a silt to granule size coarse fraction consisting of mainly quartz, dark basic rocks and volcanic glass shards | Silt-sized flecks of manganese occur through the layer with minor local concentrations at 120-160 and 70-90 cm. | ||
V17-57SBT | V17-57SBT-1 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Several | Consolidated sediment | Manganese lumps and angular fragments of siltstone (soft) greywacke, shale etc. Also some small rounded pebbles of granitic composition. Bottom fauna: Worms, Ophiuroids, crustacea. | |||
V17-59SBT | V17-59SBT-1 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Several | Coarse dark sand and pebbles 1-3 cm diameter of graywacke mixed with minor bioclastic material. Also some manganese lumps. Bottom fauna: Corals, Ophiuroids, Octocorals, molluscs. | ||||
V17-104 | V17-104-1 | 1.270 | 0.21 | 2.33 | In sediment | Mn micronodule | Few | Clay | Essentially a non-homogeneous burrowed clay with composition usually varying between 40-60% sand | There are a few dark smudges usually regarded as manganese specks. | ||
V17-81SBT | V17-81SBT-1 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Several | Fragment | Small rounded pebbles with flattened surfaces most <1 diameter along with manganese flakes, quartz schist, shale (?). Bottom fauna: Worms, clams, snails, ophiuroids 1 sharks tooth, scaphapods, crustacea. | |||
V17-82SBT | V17-82SBT-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | 0.5-1.0 cm | Round manganese nodules 1/2-1 in diameter rounded argellite pebbles; one pegmatite pebble- angular-with clevage surfaces well intact; One or two small angular granitic pebbles. Bottom fauna: Worms, bryozoa. | |||
V17-83SBT | V17-83SBT-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | 2.5 cm | Clay | Soft but tenaceous brown clay | Manganese nodules coarse sand pebbles and boulders. Manganese nodules round, 2.5 cm average diameter. Rock material mostly basalt or gabbro pebbles and boulders. Bottom fauna: A few worms. | |
V17-84SBT | V17-84SBT-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | 1.5-2.0 cm | Round manganese nodules 1.5-2 diameter surfaces are rough, fragile, and extremely porous. | |||
V17-84SBT | V17-84SBT-2 | 0.000 | 0.00 | 0.00 | Surface | Mn coating | 1 | Rock fragment | Also one manganese coated rock fragment-exceptionally interesting in that accumulations of Mn predominate on sharp edges and not on flat surfaces. | |||
V17-85SBT | V17-85SBT-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | Manganese nodules | ||||
V17-85SBT | V17-85SBT-2 | 0.000 | 0.00 | 0.00 | Surface | Mn coating | Several | Consolidated sediment | Soft angular fragments of sandy and silty clay composition, friable when dry. Many have iron manganese coatings.Also some small and large granitic and basaltic pebbles, sand stone, covered with MnO2. Fauna: Worms, ophiuroids, molluscs. | |||
V17-124 | V17-124-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 1 | 2.0 cm | Clay | Light beige silty, slightly sandy clay | A large, dark brown manganese nodule which almost filled the entire width of the core pipe. | |
V17-124 | V17-124-2 | 0.050 | 0.02 | 0.08 | In sediment | Mn micronodule | Several | Clay | Light beige silty, slightly sandy clay | Small flakes of manganese scattered through it. | ||
V17-124 | V17-124-3 | 0.265 | 0.08 | 0.45 | Buried | Mn nodule | Several | 3.0-4.0 cm | Core; basalt | Clay | Grayish brown silty clay | Several large spherical nodules with diameters ranging from 30 to 40 mm are present. One split nodule shows a pebble core. |
V17-124 | V17-124-4 | 0.265 | 0.08 | 0.45 | Buried | Mn coating | Several | Pebble; basalt | Clay | Grayish brown silty clay | A number of sub-angular pebbles generally of fine grained basalt (average 10mm diameter) and smaller flakes of manganese. | |
V17-124 | V17-124-5 | 0.265 | 0.08 | 0.45 | In sediment | Mn micronodule | Several | Clay | Grayish brown silty clay | Silt fraction made up of mineral grains, (quartz, feldspars, some minor darks) rock grains, manganese micronodules. | ||
V17-124 | V17-124-6 | 0.755 | 0.45 | 1.06 | Buried | Mn coating | Few | Small | Pebble; basalt | Clay | Multi colored, splotched and mottled silty, clay | Occasional small generally sub-angular manganese coated pebbles scattered through it. |
V17-124 | V17-124-7 | 2.450 | 2.00 | 2.90 | Buried | Mn coating | Few | Small | Pebble; basalt | Clay | Brownish tan colored mottled silty clay | Small scattered manganese coated pebbles and flakes of manganese. |
V17-125 | V17-125-1 | 0.030 | 0.00 | 0.06 | Buried | Mn crust | Several | Fragment | Clay | White to light tan diatomaceous clay. Diatoms are probably more abundant than is the clay | Some few manganese fragments at 4-5 cm. | |
V17-125 | V17-125-2 | 0.030 | 0.00 | 0.06 | In sediment | Mn micronodule | Several | Clay | White to light tan diatomaceous clay. Diatoms are probably more abundant than is the clay | Little specks of black, probably manganese, dot the layer. | ||
V17-125 | V17-125-3 | 0.115 | 0.06 | 0.17 | In sediment | Mn micronodule | Few | Clay | Well burrowed milky medium brown clay | It has 2-3% small manganese specks and perhaps 35-45% diatoms. | ||
V17-125 | V17-125-4 | 0.310 | 0.27 | 0.35 | Buried | Mn coating | Many | Pebble | Ooze | Layer is composed of well-burrowed, white-tan clay-diatom ooze | Numerous manganese fragments and some coated rocks. | |
V17-125 | V17-125-5 | 0.740 | 0.70 | 0.78 | Buried | Mn nodule | Several | Fragment | Core; consolidated sediment | Ooze | Layer is composed of well-burrowed, white-tan clay-diatom ooze | A pocket of soft manganese nodule fragments. |
V17-125 | V17-125-6 | 1.225 | 1.16 | 1.29 | In sediment | Mn micronodule | Several | Ooze | Well burrowed clay diatom ooze | Usual manganese specks. | ||
V17-125 | V17-125-7 | 1.420 | 1.42 | 1.42 | Buried | Mn coating | 1 | 2.0x2.0x1.0 cm | Pebble; basalt | Clay | Grayish brown clay. Well burrowed | One 2.0x2.0x1.0 cm pebble with manganese coating at 142 cm. Pebble is gray, medium grained basalt. |
V17-125 | V17-125-8 | 1.370 | 1.29 | 1.45 | In sediment | Mn micronodule | Several | Clay | Grayish brown clay. Well burrowed | Manganese specks present. | ||
V17-125 | V17-125-9 | 1.515 | 1.45 | 1.58 | In sediment | Mn micronodule | Several | Clay | Mixture of about 50% clay and 50% diatoms. Well burrowed and mottled in color | Tiny manganese specks. | ||
V17-125 | V17-125-10 | 3.345 | 3.28 | 3.41 | Buried | Mn nodule | 1 | Core; consolidated sediment | Clay | Multicolored tan-gray and brown diatomaceous clay mixture | Coarse manganiferous clayey nodule fragments at 328-341 cm. | |
V17-125 | V17-125-11 | 3.485 | 3.44 | 3.53 | Buried | Mn nodule | 1 | Core; consolidated sediment | Clay | Multicolored tan-gray and brown diatomaceous clay mixture | Coarse manganiferous clayey nodule fragments at 344-353 cm. | |
V17-125 | V17-125-12 | 3.655 | 3.63 | 3.68 | Buried | Mn nodule | 1 | Core; consolidated sediment | Clay | Multicolored tan-gray and brown diatomaceous clay mixture | Coarse manganiferous clayey nodule fragments at 363-368 cm. | |
V17-125 | V17-125-13 | 3.355 | 3.03 | 3.68 | In sediment | Mn micronodule | Many | Clay | Multicolored tan-gray and brown diatomaceous clay mixture | Numerous manganese specks in the clay. | ||
V17-126 | V17-126-1 | 0.485 | 0.40 | 0.57 | In sediment | Mn micronodule | Several | Clay | Yellowish-grey smooth textured silty clay | Fine dark brown flakes below 48 cm. are manganese. | ||
V17-131 | V17-131-1 | 1.150 | 0.00 | 2.30 | In sediment | Mn micronodule | Few | Sand | Clastic sand, grayish-olive (10Y4/2), sorted and graded from fine to medium grained | Most of the layer is composed of rounded quartz grains (30%) and rock fragments (20-25%). Manganese fragments are occasionally found. | ||
V17-134 | V17-134-1 | 2.200 | 0.00 | 4.40 | In sediment | Mn micronodule | Many | Sand | Clastic sand, yellowish-olive-gray (5Y6/2) moderately sorted and medium grained | Fairly abundant manganese fragments | ||
V17-136 | V17-136-1 | 0.270 | 0.00 | 0.54 | In sediment | Mn micronodule | Few | Sand | Clastic sand grayish-olive (10Y4/2), moderately sorted, immersed in a clayly groundmass | Sand consists of rounded quartz and feldspar as grains plus relatively smaller amounts of dark rock fragments and manganese. | ||
V17-144 | V17-144-1 | 0.480 | 0.26 | 0.70 | In sediment | Mn micronodule | Few | Clay | Clay and silty clay, dark yellowish-brown (10YR2/2), very well compacted. No burrowing present | Few manganese micronodules. | ||
V17-144 | V17-144-2 | 0.945 | 0.70 | 1.19 | In sediment | Mn micronodule | Several | Clay | Clay and silty clay, olive gray (5Y4/1) | Some manganese micronodules. | ||
V17-146 | V17-146-1 | 2.450 | 0.00 | 4.90 | In sediment | Mn micronodule | Few | Clay | Silty and sandy clay, olive-gray (5Y3/2). Scattered burrowing throughout | Few manganese micronodules present. | ||
V17-147 | V17-147-1 | 0.085 | 0.00 | 0.17 | In sediment | Mn micronodule | Several | Clay | Silty clay and clayey silt, dark yellowish-brown (10YR4/2). Layer is moderately well burrowed | Some manganese micronodules present. | ||
V17-147 | V17-147-2 | 0.215 | 0.17 | 0.26 | In sediment | Mn micronodule | Several | Clay | Silty clay, yellowish-gray (5Y7/2). Moderate burrowing present. A slight suggestion of laminae is present | Manganese micronodules present as are quartz grains. | ||
V17-147 | V17-147-3 | 3.130 | 0.26 | 6.00 | In sediment | Mn micronodule | Several | Clay | Silty clay and clayey silt, grayish-olive (10Y4/2) | Manganese micronodules as well as many visible accumulations scattered throughout. | ||
V17-150 | V17-150-1 | 0.065 | 0.00 | 0.13 | In sediment | Mn micronodule | Many | Clay | Foraminiferal clay, firm, pale yellowish-brown (10YR6/2), burrowed. The carbonate content is about 60% | The only mineral microscopically observed was manganese micronodules (approximately 10%). | ||
V17-150 | V17-150-2 | 0.215 | 0.13 | 0.30 | In sediment | Mn micronodule | Many | Clay | Clay (red clay), pale brown (5YR5/2), firm and slightly burrowed. The carbonate content is approximately 20% | Manganese micronodules comprise about 10% of sediment. | ||
V17-150 | V17-150-3 | 0.505 | 0.30 | 0.71 | In sediment | Mn micronodule | Few | Clay | Foraminiferal clay, very pale orange (10YR8/2), burrowed and firm. The carbonate content is approximately 70% | Manganese micronodules are occasionally scattered throughout. | ||
V17-150 | V17-150-4 | 1.915 | 0.83 | 3.00 | In sediment | Mn micronodule | Many | Clay | Clay (red clay), dark yellowish-brown (l0YR5/2), soft | Manganese micronodules comprise about 15-20% of layer. Small specks of manganese and also probable burrows filled with manganese clay occur at 145-170 cm. | ||
V17-152 | V17-152-1 | 0.085 | 0.00 | 0.17 | In sediment | Mn micronodule | Many | Clay | Light olive-gray, poorly sorted, silty foraminiferal clay. Foraminifera content around 25%. Carbonates around 45-50% | Patches, specks and micronodules of manganese abound. Manganese present estimated around 20%. | ||
V17-152 | V17-152-2 | 0.375 | 0.30 | 0.45 | In sediment | Mn micronodule | Several | Clay | Pale olive, unsorted, silty foraminiferal clay | Moderate percentage of manganese micronodules. | ||
V17-152 | V17-152-3 | 0.455 | 0.45 | 0.46 | In sediment | Mn micronodule | Several | Clay | Lighter, unsorted, sandy, foraminiferal clay. The content of medium-coarse grained foraminifera is about 20% | Micronodules of manganese (5%) were observed. | ||
V17-152 | V17-152-4 | 1.230 | 1.16 | 1.30 | In sediment | Mn micronodule | Few | Clay | Pale greenish-yellow, silty, foraminiferal clay | Manganese micronodules occur as accessories (less than 5%). | ||
V17-152 | V17-152-5 | 1.750 | 1.53 | 1.97 | In sediment | Mn micronodule | Many | Clay | Light olive, soft, clay with apparent lack of foraminifera and carbonates. Occasional burrow mottlings | Micronodules of manganese occur (less than 15%). | ||
V17-152 | V17-152-6 | 4.350 | 4.12 | 4.58 | In sediment | Mn micronodule | Many | Clay | Pale greenish-yellow, soft, clay. Foraminifera about 20%. Carbonate fraction about 25% | Manganese micronodules are quite common. | ||
V17-152 | V17-152-7 | 11.360 | 11.21 | 11.51 | In sediment | Mn micronodule | Few | Clay | Pale olive, soft clay with about 3-4% medium-coarse foraminifera tests. Carbonate content less than 7% | Micronodules of manganese occur as accessory constituent. | ||
V17-153 | V17-153-1 | 1.930 | 0.47 | 3.39 | In sediment | Mn micronodule | Many | Clay | Variations of light gray, compact, burrowed, foraminiferal calcarous clay | Manganese micronodules and streaks common, particularly at 130, 180-187, 210 and 337 cm. | ||
V17-155 | V17-155-1 | 0.050 | 0.00 | 0.10 | In sediment | Mn micronodule | Several | Clay | Greenish-gray, poorly sorted, sandy, foraminiferal clay. Carbonate content about 70% | 5% micronodules of manganese occur. | ||
V17-155 | V17-155-2 | 1.515 | 1.23 | 1.80 | In sediment | Mn micronodule | Several | Clay | Light greenish-gray (becoming lighter with depth) burrowed and poorly sorted sandy foraminiferal clay | Micronodules of manganese (5%) are mixed with sediment. | ||
V17-155 | V17-155-3 | 2.290 | 2.09 | 2.49 | In sediment | Mn micronodule | Several | Clay | Grayish-olive, poorly sorted, sandy foraminiferal clay. Medium-coarse grained foraminifera (35-45%) occur. Carbonate is around 65-70% | The content of manganese micronodules seems to be higher than overlying layers (>5%). | ||
V17-155 | V17-155-4 | 5.955 | 5.76 | 6.15 | In sediment | Mn micronodule | Many | Clay | Pale greenish-yellow, (becoming darker with depth) sandy, foraminiferal clay. Carbonate content around 65% | Small patches and micronodules of manganese abound. | ||
V17-156 | V17-156-1 | 0.085 | 0.00 | 0.17 | In sediment | Mn micronodule | Many | Clay | Clay (red clay), dark yellowish-brown (10YRU/2), firm, burrowed | Manganese micronodules content is about 15-20%, increasing with depth. | ||
V17-160 | V17-160-1 | 0.515 | 0.48 | 0.55 | In sediment | Mn micronodule | Several | Clay | Clay, light brown (5YR5/6) | Manganese micronodules present in moderate amount. | ||
V17-160 | V17-160-2 | 0.900 | 0.85 | 0.95 | In sediment | Mn micronodule | Few | Clay | Foraminiferal clay, light brown (5YR6/4). Foraminifera content is approximately 40% | Manganese micronodules less than 2%. | ||
V17-160 | V17-160-3 | 4.695 | 3.60 | 5.79 | In sediment | Mn micronodule | Many | Clay | Foraminiferal clay, pale yellowish-brown (10YR7/2) | Manganese specks and streaks abundant. | ||
V17-160 | V17-160-4 | 9.140 | 6.98 | 11.30 | In sediment | Mn micronodule | Many | Clay | Clay, very pale orange (10YR8/2) intercalated with brown (5YR4/6) lutite and light brown (5YR6/4) clay | Manganese streaks and specks abundant. | ||
V17-162 | V17-162-1 | 0.080 | 0.00 | 0.16 | In sediment | Mn micronodule | Few | Clay | Clay, moderate brown (5YR3/4), rather heavily burrowed in the top 10 cm | Few manganese micronodules occur. | ||
V17-162 | V17-162-2 | 0.180 | 0.16 | 0.20 | In sediment | Mn micronodule | Several | Clay | Silty clay, grayish-orange (10YR7/4). Layer is laminated. No burrowing | Manganese micronodules present. | ||
V17-162 | V17-162-3 | 0.365 | 0.20 | 0.53 | In sediment | Mn micronodule | Several | Clay | Clay, dark yellowish-brown (10YR4/2). Layer very heavily mottled with small burrow tracks | Manganese micronodules and some accumulation of manganese present. | ||
V17-162 | V17-162-4 | 0.580 | 0.53 | 0.63 | In sediment | Mn micronodule | Several | Clay | Clay and foraminiferal clay, laminated, grayish-orange (10YR7/4) and moderate yellowish-brown (10YR5/4) | Manganese micronodules present. | ||
V17-162 | V17-162-5 | 0.805 | 0.74 | 0.87 | In sediment | Mn micronodule | Several | Clay | Clay and foraminiferal clay, grayish-orange (10YR7/4) and moderate yellowish-brown (10YR5/4). Layer is well burrow mottled | Manganese micronodules occur. | ||
V17-162 | V17-162-6 | 1.430 | 1.25 | 1.61 | In sediment | Mn micronodule | Several | Clay | Clay, grayish-orange (10YR7/4) to mostly moderate yellowish-brown (10YR5/4) | Manganese micronodules occur. | ||
V17-163 | V17-163-1 | 2.950 | 1.82 | 4.08 | In sediment | Mn micronodule | Several | Clay | Clay, light brown (5YR5/4) intercalated with moderate brown (5YR4/4) and grayish-orange (10YR7/4) clay | Manganese micronodules and some small manganese patches present. | ||
V17-163 | V17-163-2 | 4.285 | 4.08 | 4.49 | In sediment | Mn micronodule | Several | Clay | Foraminiferal clay, pinkish-gray (5Y8/1) | Manganese microlamina at top and manganese micronodules apparent throughout. | ||
V17-163 | V17-163-3 | 4.685 | 4.49 | 4.88 | In sediment | Mn micronodule | Several | Clay | Clay, dark brown (5YR2/4) grades in color to dusky brown (5YR2/2) with depth. Calcium carbonate content practically nil | Manganese micronodules present throughout; manganese content increases with depth. | ||
V17-165 | V17-165-1 | 0.915 | 0.23 | 1.60 | In sediment | Mn micronodule | Several | Clay | Medium brown calcareous clay becoming light brown below 70 cm | Manganese micronodules present throughout. | ||
V17-165 | V17-165-2 | 1.730 | 1.63 | 1.83 | In sediment | Mn micronodule | Many | Clay | Light to medium brown calcareous clay | Manganese micronodules are present throughout but are more numerous within the top 20 cm. of the layer | ||
V17-166 | V17-166-1 | 0.800 | 0.70 | 0.90 | In sediment | Mn micronodule | Several | Clay | Clay, grayish-orange (10YR/4). Burrow tracks are common | Manganese micronodules common | ||
V17-166 | V17-166-2 | 1.375 | 1.28 | 1.47 | In sediment | Mn micronodule | Many | Clay | Clay and foraminiferal clay, light brown (5YR5/6) | Manganese micronodules very common. | ||
V17-166 | V17-166-3 | 3.275 | 1.49 | 5.06 | In sediment | Mn micronodule | Several | Clay | Clay and foraminiferal clay, grayish-orange (10YR7/4), moderate to heavily burrowed | Manganese micronodules common. | ||
V17-166 | V17-166-4 | 8.665 | 8.43 | 8.90 | In sediment | Mn micronodule | Many | Clay | Clay and foraminiferal clay, laminated, dark yellowish-brown (10YR6/6) to mostly grayish-orange (10YR7/4). Very slight burrowing activity at the top of the layer | Manganese micronodules very common. | ||
V17-29RD | V17-29RD-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | Rocks, boulders, pebbles of quartzite, basalt, manganese nodules, diorite, granite gneiss, monzonite granite; also organic material | ||||
V17-182 | V17-182-1 | 0.225 | 0.00 | 0.45 | In sediment | Mn micronodule | Several | Sand | Clastic sand, moderate olive-brown (5Y4/4) moderately sorted and graded from medium to very coarse-grained | Rounded grains of olivine, quartz, rock fragments and manganese were identified. | ||
V17-186 | V17-186-1 | 0.550 | 0.00 | 1.10 | In sediment | Mn micronodule | Several | Sand | Clastic sand, light olive-gray (5Y5/2) moderately sorted and graded from coarse to very coarse grained | Olivine,quartz, pyroxene and manganese seems to characterise the finer portion of the sand. | ||
V17-188 | V17-188-1 | 0.030 | 0.00 | 0.06 | In sediment | Mn micronodule | Few | Sand | Fine-grained sand, light olive gray (5Y6/1) poorly sorted. No grading observed | Rounded quartz grains, a small amount of manganese and volcanic glass occur throughout. | ||
V17-192 | V17-192-1 | 0.005 | 0.00 | 0.01 | In sediment | Mn micronodule | Many | Sand | A dark yellowish brown foraminifera and quartz rich clayey sand makes up the top portion of this core | There is an abundance of particles of volcanic glass and manganese oxide. | ||
V17-192 | V17-192-2 | 0.110 | 0.06 | 0.16 | In sediment | Mn micronodule | Several | Sand | Unsorted clayey sand is distinguished surficially by a mottled olive color | Shale fragments, quartz, manganese and abundant foraminifera. | ||
V17-192 | V17-192-3 | 0.630 | 0.16 | 1.10 | In sediment | Mn micronodule | Many | Sand | Very clayey sand is light brown | Abundant manganese, quartz, orthoclase and some accessory minerals. | ||
V17-192 | V17-192-4 | 3.285 | 1.37 | 5.20 | In sediment | Mn micronodule | Many | Clay | A burrow mottled, greyish-olive, silty clay turning dark yellowish brown | Contains abundant foraminifera and manganese particles. | ||
V17-210 | V17-210-1 | 2.565 | 2.33 | 2.80 | In sediment | Mn micronodule | Several | Clay | Medium to dark brown and gray-brown silty and sandy clay. Burrowing occurs throughout | Manganese micronodules present throughout. Some local concentration of manganese present. | ||
V17-211 | V17-211-1 | 0.050 | 0.00 | 0.10 | In sediment | Mn micronodule | Several | Clay | Light to medium brown clay. Burrowing abundant in the upper 20 cm. but decreases in content towards bottom | Manganese micronodules occur in many of the burrow tracks in the upper 10 cm. | ||
V17-211 | V17-211-2 | 0.550 | 0.48 | 0.62 | In sediment | Mn micronodule | Many | Clay | Light to medium brown clay. Burrowing abundant in the upper 20 cm. but decreases in content towards bottom | Manganese content is greatly increased. This gives the layer a sporadic dark gray tone. | ||
V17-211 | V17-211-3 | 2.565 | 0.62 | 4.51 | In sediment | Mn micronodule | Several | Clay | Light to medium brown and gray brown clay. Burrowing sporadic throughout | Manganese micronodules present throughout but never abundant. |