Kaharoeddin, F A; Eggers, M; Goldstein, E H; Graves, R S; Watkins, David K; Bergen, James A (1980): Annotated record of the detailed examination of Mn deposits from ARA Islas Orcadas Cruise 15 core stations [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.863609, Supplement to: Kaharoeddin, FA et al. (1980): ARA Islas Orcadas Cruise 1578 sediment descriptions. Sedimentology Research Laboratory Contributions, Antarctic Research Facility, Department of Geology, Florida State University, Tallahassee, Contribution No 48, 168 pp, https://www.ngdc.noaa.gov/mgg/curator/data/islas_orcadas/io1578/io1578_descriptions.pdf
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
The purpose of this volume, the tenth in a series of similar publications (Goodell, 1964, 1965, 1968; Frakes 1971, 1973 ; Cassidy et al., 1977), is to continue a presentation to the research community of sediment core descriptions and attendant data of cored and otherwise obtained sediments retrieved in waters of the Southern Ocean aboard the research vessel, ARA Islas Orcadas (formerly, USNS Eltanin), as a part of the circumpolar survey begun by Eltanin in 1962 (see issue of Antarctic Journal of the United States, Vol. 8, No. 3, 1973). The data presented herein are concerned with the results of coring activities aboard cruise 1578 of Islas Orcadas, the fourth marine geology coring cruise of this vessel under the terms of the present United States-Argentine agreement. The core descriptions are organised as follows: 1) a brief summary of the coring objectives of the cruise, together with a discussion of core recovery; 2) a table and map of station location data for materials retrieved; 3) a table of tentative age-dates for each piston core; 4) an explanation of the laboratory procedures and descriptive criteria used in the description of the sediments, and 5) lithologic descriptions of the piston and trigger cores, and the piston and trigger core bag samples.
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: -64.886476 * Median Longitude: -21.850619 * South-bound Latitude: -72.408000 * West-bound Longitude: -41.167000 * North-bound Latitude: -55.658000 * East-bound Longitude: -3.642000
Date/Time Start: 1978-01-01T00:00:00 * Date/Time End: 1978-01-01T00:00:00
Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 10.205 m
Event(s):
IO1578.005-PC * Latitude: -59.800000 * Longitude: -13.478000 * Date/Time: 1978-01-01T00:00:00 * Elevation: -3968.0 m * Recovery: 5.56 m * Campaign: IO1578 * Basis: Islas Orcadas * Method/Device: Piston corer (PC)
IO1578.006-PC * Latitude: -59.487000 * Longitude: -9.853000 * Date/Time: 1978-01-01T00:00:00 * Elevation: -4283.0 m * Recovery: 6.41 m * Campaign: IO1578 * Basis: Islas Orcadas * Method/Device: Piston corer (PC)
IO1578.008-PC * Latitude: -60.555000 * Longitude: -3.642000 * Date/Time: 1978-01-01T00:00:00 * Elevation: -5130.0 m * Recovery: 8.96 m * Campaign: IO1578 * Basis: Islas Orcadas * 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 | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | Identification | ID | ||||
| 6 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 7 | Depth, top/min | Depth top | m | |||
| 8 | Depth, bottom/max | Depth bot | m | |||
| 9 | Position | Position | Visual description | |||
| 10 | Deposit type | Deposit type | ||||
| 11 | Quantity of deposit | Quantity | ||||
| 12 | Size | Size | ||||
| 13 | Substrate type | Substrate | ||||
| 14 | Sediment type | Sediment | ||||
| 15 | Color description | Color desc | Visual description | |||
| 16 | Description | Description |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
701 data points
Data
| 1 Event | 2 Latitude | 3 Longitude | 4 Elevation [m] | 5 ID | 6 Depth sed [m] | 7 Depth top [m] | 8 Depth bot [m] | 9 Position | 10 Deposit type | 11 Quantity | 12 Size | 13 Substrate | 14 Sediment | 15 Color desc | 16 Description |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| IO1578.005-PC | -59.8000 | -13.4780 | -3968 | IO1578.005-PC-1 | 0.000 | 0.00 | 0.00 | Surface | Mn coating | 1 | 2.8 cm | Pebble | Mud | Diatomaceous mud, light olive gray (5Y 5/2); volcanic ash abundant throughout | 28 mm angular pebble coated with manganese oxides between 0-3 cm. |
| IO1578.005-PC | -59.8000 | -13.4780 | -3968 | IO1578.005-PC-2 | 0.185 | 0.18 | 0.19 | Buried | Mn coating | 2 | 0.3-0.6 cm | Fragment | Mud | Diatomaceous mud, dark yellowish brown (10YR 4/2) | 6 mm and 3 mm angular lapilli between 18-19 cm, partially coated with manganese oxides. |
| IO1578.005-PC | -59.8000 | -13.4780 | -3968 | IO1578.005-PC-3 | 1.710 | 1.69 | 1.73 | Buried | Mn nodule | 1 | 3.9 cm | Clay | Pelagic clay, dark yellowish brown (10YR 4/2) | 39 mm manganese nodule between 169-173 cm. | |
| IO1578.005-PC | -59.8000 | -13.4780 | -3968 | IO1578.005-PC-4 | 2.520 | 1.69 | 3.35 | Buried | Mn coating | 3 | 0.8-2.9 cm | Pebble | Clay | Pelagic clay, dark yellowish brown (10YR 4/2) | Pebbles coated with manganese oxides between 169-172 cm (29 mm), 317-320 cm (21 mm) and 334-335 cm (8 mm). |
| IO1578.005-PC | -59.8000 | -13.4780 | -3968 | IO1578.005-PC-5 | 2.555 | 1.68 | 3.43 | In sediment | Mn micronodule | Few | Clay | Pelagic clay, dark yellowish brown (10YR 4/2) | Micro-manganese nodules sparsely scattered between 168-343 cm | ||
| IO1578.005-PC | -59.8000 | -13.4780 | -3968 | IO1578.005-PC-6 | 4.215 | 3.43 | 5.00 | In sediment | Mn micronodule | Many | Ooze | Diatomaceous ooze, dusky yellow (5Y 6/4) ; mottled with yellowish gray (5Y 7/2) | Micro-manganese nodules concentrated in irregular stringers between 343-500 cm. | ||
| IO1578.006-PC | -59.4870 | -9.8530 | -4283 | IO1578.006-PC-1 | 0.700 | 0.69 | 0.71 | Buried | Mn coating | 2 | 1.0 cm | Consolidated sediment | Mud | Diatomaceous mud, dark yellowish brown (10YR 4/2); volcanic ash common throughout | Two 10 mm conglomerates encrusted with manganese oxides between 69-71 cm. |
| IO1578.006-PC | -59.4870 | -9.8530 | -4283 | IO1578.006-PC-2 | 2.265 | 2.26 | 2.27 | Buried | Mn coating | 1 | 1.0 cm | Pumice | Clay | Pelagic clay, dark yellowish brown (10YR 4/2) gradationally changing at 312 cm topale yellowish brown (10YR 6/2) | 10 mm pumice coated with manganese oxides between 226-227 cm. |
| IO1578.006-PC | -59.4870 | -9.8530 | -4283 | IO1578.006-PC-3 | 3.315 | 1.60 | 5.03 | In sediment | Mn micronodule | Few | Clay | Pelagic clay, dark yellowish brown (10YR 4/2) gradationally changing at 312 cm topale yellowish brown (10YR 6/2) | Micro-manganese nodules sparsely scattered throughout. | ||
| IO1578.006-PC | -59.4870 | -9.8530 | -4283 | IO1578.006-PC-4 | 5.520 | 5.03 | 6.01 | In sediment | Mn micronodule | Many | Ooze | Muddy, diatomaceous ooze, pale yellowish brown (10YR 6/2) | Micro-manganese nodules abundant throughout in fine, irregular stringers. | ||
| IO1578.006-PC | -59.4870 | -9.8530 | -4283 | IO1578.006-PC-5 | 6.390 | 6.38 | 6.40 | Buried | Mn coating | 1 | 1.5 cm | Consolidated sediment | Ooze | Ash-bearing, muddy, diatomaceous ooze, dark yellowish brown (10YR 4/2) | 15 mm conglomerate between 638-640 cm, partially coated with manganese oxides. |
| IO1578.006-PC | -59.4870 | -9.8530 | -4283 | IO1578.006-PC-6 | 6.210 | 6.01 | 6.41 | In sediment | Mn micronodule | Few | Ooze | Ash-bearing, muddy, diatomaceous ooze, dark yellowish brown (10YR 4/2) | Micro-manganese nodules sparsely scattered throughout. | ||
| IO1578.008-PC | -60.5550 | -3.6420 | -5130 | IO1578.008-PC-1 | 5.745 | 5.69 | 5.80 | In sediment | Mn micronodule | Several | Clay | Pelagic clay, dark yellowish brown (10YR 4/2), gradationnaly changing to dusky yellow (5Y 6/4) at 460 cm | Micro-manganese nodules common between 569-580 cm | ||
| IO1578.008-PC | -60.5550 | -3.6420 | -5130 | IO1578.008-PC-2 | 5.950 | 5.90 | 6.00 | In sediment | Mn micronodule | Several | Clay | Pelagic clay, dark yellowish brown (10YR 4/2), gradationnaly changing to dusky yellow (5Y 6/4) at 460 cm | Micro-manganese nodules common between 590-600 cm. | ||
| IO1578.012-PC | -66.9820 | -7.7530 | -4806 | IO1578.012-PC-1 | 0.175 | 0.16 | 0.19 | In sediment | Mn rich layer | 1 | 0.3 cm thick | Clay | Pelagic clay, moderate olive brown (5Y 4/4); slightly stained with manganese oxides | 3 mm irregular stringer rich in manganese oxides between 16-19 cm. | |
| IO1578.012-PC | -66.9820 | -7.7530 | -4806 | IO1578.012-PC-2 | 2.820 | 1.67 | 3.97 | In sediment | Mn micronodule | Few | Clay | Pelagic clay, moderate olive brown (5Y 4/4) | Micro-manganese nodules sparsely scattered throughout. | ||
| IO1578.014-PC | -68.6970 | -10.2250 | -4256 | IO1578.014-PC-1 | 1.785 | 0.00 | 3.57 | Buried | Mn coating | Several | 0.5-5.5 cm | Pebble | Clay | Pelagic clay, light olive gray (5Y 5/2) | Pebbles highly encrusted with micro-manganese nodules and manganese oxides. Size from 0.5 cm to 5.5 cm. |
| IO1578.014-PC | -68.6970 | -10.2250 | -4256 | IO1578.014-PC-2 | 1.785 | 0.00 | 3.57 | In sediment | Mn micronodule | Few | Clay | Pelagic clay, light olive gray (5Y 5/2) | Micro-manganese nodules sparsely scattered throughout. | ||
| IO1578.024-PC | -69.9700 | -12.2830 | -4078 | IO1578.024-PC-1 | 0.260 | 0.24 | 0.28 | Buried | Mn coating | 1 | 3.5 cm | Pebble | Ooze | Marly, foraminiferal ooze, light olive gray (5Y 5/2) | 35 mm rounded pebble between 24-28 cm, encrusted with manganese oxides. |
| IO1578.024-PC | -69.9700 | -12.2830 | -4078 | IO1578.024-PC-2 | 0.415 | 0.30 | 0.53 | Buried | Mn coating | 3 | 0.8-2.0 cm | Pebble | Mud | Mud, light olive gray (5Y 5/2); zone of higher silt content between 128-136 cm | Pebbles encrusted with manganese oxides between 30-32 cm (20 mm). 42-43 cm (8 mm) and 51-53 cm (20 mm). |
| IO1578.024-PC | -69.9700 | -12.2830 | -4078 | IO1578.024-PC-3 | 1.515 | 1.36 | 1.67 | Buried | Mn coating | Many | 0.5-5.0 cm | Pebble | Sand | Pebbly, muddy sand, light olive gray (5Y 5/2). Median diameter of pebbles 5 mm with erratic occurrences of larger pebbles | Many pebbles and coarse sand grains are encrusted with manganese oxides. |
| IO1578.024-PC | -69.9700 | -12.2830 | -4078 | IO1578.024-PC-4 | 2.235 | 1.85 | 2.62 | Buried | Mn coating | Few | 1.0-2.0 cm | Pebble | Mud | Mud, light olive gray (5Y 5/2); silt content increases with depth | Pebbles coated with manganese oxides, ranging from 10 mm to 20 mm, sparsely scattered between 185-262 cm. |
| IO1578.024-PC | -69.9700 | -12.2830 | -4078 | IO1578.024-PC-5 | 3.760 | 3.76 | 3.76 | Buried | Mn coating | 2 | 0.5-2.3 cm | Pebble | Clay | Clay, light olive gray (5Y 5/2) | Pebbles (two) between 367-376 cm, 5mm and 23mm, coated with manganese oxides. |
| IO1578.024-PC | -69.9700 | -12.2830 | -4078 | IO1578.024-PC-6 | 4.630 | 4.44 | 4.82 | In sediment | Mn micronodule | Few | Mud | Sandy mud, light olive gray (5Y 5/2), volcanic ash | Micro-manganese nodules sparsely scattered throughout. | ||
| IO1578.024-PC | -69.9700 | -12.2830 | -4078 | IO1578.024-PC-7 | 5.915 | 5.43 | 6.40 | In sediment | Mn micronodule | Few | Mud | Diatomaceous mud, light olive gray (5Y 5/2) | Micro-manganese nodules sparsely scattered throughout. | ||
| IO1578.024-PC | -69.9700 | -12.2830 | -4078 | IO1578.024-PC-8 | 6.445 | 6.40 | 6.49 | In sediment | Mn micronodule | Several | Mud | Diatomaceous mud, pale olive (10Y 6/2) | Micro-manganese nodules common between 640-649 cm. | ||
| IO1578.024-PC | -69.9700 | -12.2830 | -4078 | IO1578.024-PC-9 | 6.545 | 6.49 | 6.60 | In sediment | Mn micronodule | Few | Mud | Diatomaceous mud, pale olive (10Y 6/2) | Micro-manganese nodules sparsely scattered between 649-660 cm. | ||
| IO1578.024-PC | -69.9700 | -12.2830 | -4078 | IO1578.024-PC-10 | 7.350 | 6.60 | 8.10 | In sediment | Mn micronodule | Few | Mud | Diatomaceous mud, light olive gray (5Y 5/2) | Micro-manganese nodules sparsely scattered between 649-660 cm. | ||
| IO1578.025-PC | -71.0220 | -18.2670 | -4440 | IO1578.025-PC-1 | 2.235 | 2.23 | 2.24 | In sediment | Mn micronodule | Many | Mud | Sandy mud, light olive gray (5Y 5/2); sand content varies with depth | Sedimentary clasts between 223-224 cm (7 mm), composed of clay containing micro-manganese nodules. | ||
| IO1578.025-PC | -71.0220 | -18.2670 | -4440 | IO1578.025-PC-2 | 2.940 | 2.93 | 2.95 | In sediment | Mn micronodule | Many | Mud | Sandy mud, light olive gray (5Y 5/2); sand content varies with depth | Sedimentary clasts between 293-295 cm (14 mm), composed of clay containing micro-manganese nodules. | ||
| IO1578.025-PC | -71.0220 | -18.2670 | -4440 | IO1578.025-PC-3 | 3.790 | 3.58 | 4.00 | In sediment | Mn micronodule | Few | Mud | Mud, light olive gray (5Y 5/2) | Micro-manganese nodules sparsely scattered throughout. | ||
| IO1578.025-PC | -71.0220 | -18.2670 | -4440 | IO1578.025-PC-4 | 5.035 | 5.03 | 5.04 | In sediment | Mn micronodule | Many | Mud | Mud, dusky yellow (5Y 6/4) | 2 mm lamina at top of unit, composed of silt, rich in heavy minerals and micro-manganese nodules. | ||
| IO1578.027-PC | -72.4080 | -19.4180 | -3274 | IO1578.027-PC-1 | 1.025 | 1.01 | 1.04 | Buried | Mn coating | 1 | 2.8 cm | Pebble | Mud | Mud, light olive gray (5Y 5/2) | 28 mm manganese oxide-coated pebble between 101-104 cm, subangular. |
| IO1578.027-PC | -72.4080 | -19.4180 | -3274 | IO1578.027-PC-2 | 1.515 | 1.51 | 1.52 | Buried | Mn coating | 1 | 0.8 cm | Pebble | Ooze | Marly, foraminiferal ooze, light olive gray (5Y 5/2) | 8 mm manganese oxide-coated pebble at 151-152 cm, subrounded. |
| IO1578.027-PC | -72.4080 | -19.4180 | -3274 | IO1578.027-PC-3 | 1.825 | 1.82 | 1.83 | Buried | Mn coating | 1 | 0.8 cm | Pebble | Ooze | Marly, foraminiferal ooze, light olive gray (5Y 5/2) | 8 mm manganese oxide-coated pebble between 182-183 cm, subrounded. |
| IO1578.037-PC | -71.5270 | -18.1250 | -3681 | IO1578.037-PC-1 | 0.905 | 0.76 | 1.05 | In sediment | Mn micronodule | Several | Mud | Mud, grayish olive (10Y 4/2) | Micro-manganese nodules and sand, coated with manganese oxides. | ||
| IO1578.037-PC | -71.5270 | -18.1250 | -3681 | IO1578.037-PC-2 | 1.305 | 1.30 | 1.31 | Buried | Mn coating | 1 | 0.4 cm | Pebble | Mud | Mud, light olive gray (5Y 5/2) | A 4 mm pebble, coated with manganese oxides, between 130-131 cm. |
| IO1578.037-PC | -71.5270 | -18.1250 | -3681 | IO1578.037-PC-3 | 1.565 | 1.55 | 1.58 | Buried | Mn coating | 2 | 0.9-1.8 cm | Pebble | Mud | Mud, light olive gray (5Y 5/2) | Subangular pebbles coated with manganese oxides between 155-157 cm (18 mm) and 156-158 cm (9 mm). |
| IO1578.037-PC | -71.5270 | -18.1250 | -3681 | IO1578.037-PC-4 | 2.615 | 2.58 | 2.65 | Buried | Mn coating | Several | Up to 2.4 cm | Pebble | Mud | Diatomaceous mud, light olive gray (5Y 5/2) | Subrounded to subangular pebbles up to 24 mm, coated with manganese oxides, abundant between 258-265 cm |
| IO1578.037-PC | -71.5270 | -18.1250 | -3681 | IO1578.037-PC-5 | 3.330 | 3.32 | 3.34 | Buried | Mn coating | Several | 0.8 cm | Pebble | Mud | Mud, moderate olive brown (5Y 4/4) | Manganese oxide-coated pebbles common between 332-334 cm (median diameter 8 mm). |
| IO1578.037-PC | -71.5270 | -18.1250 | -3681 | IO1578.037-PC-6 | 4.290 | 3.86 | 4.72 | Buried | Mn coating | Several | 0.7 cm | Pebble | Mud | Mud, moderate olive brown (5Y 4/4) | Manganese oxide-coated pebbles sparsely scattered between 386-472 cm (median diameter 7 mm). |
| IO1578.037-PC | -71.5270 | -18.1250 | -3681 | IO1578.037-PC-7 | 6.200 | 6.18 | 6.22 | Buried | Mn coating | Several | 2.0 cm | Pebble | Mud | Mud, moderate olive brown (5Y 4/4) | Manganese oxide-coated pebbles common between 618-622 cm (median diameter 20 mm). |
| IO1578.040-PC | -69.9820 | -26.0370 | -4481 | IO1578.040-PC-1 | 3.540 | 1.87 | 5.21 | In sediment | Mn micronodule | Few | Clay | Pelagic clay, light olive gray (5Y 5/2) | Micro-manganese nodules sparsely scattered throughout. | ||
| IO1578.040-PC | -69.9820 | -26.0370 | -4481 | IO1578.040-PC-2 | 10.205 | 10.18 | 10.23 | Buried | Mn coating | 1 | 5.0 cm | Pebble | Clay | Pelagic clay, light olive gray (5Y 5/2) | 50 mm pebble slightly encrusted with micro-manganese nodules between 1018-1023 cm. |
| IO1578.040-PC | -69.9820 | -26.0370 | -4481 | IO1578.040-PC-3 | 8.385 | 6.07 | 10.70 | In sediment | Mn micronodule | Few | Clay | Pelagic clay, light olive gray (5Y 5/2) | Micro-manganese nodules sparsely scattered throughout. | ||
| IO1578.041-PC | -69.0080 | -24.7770 | -4631 | IO1578.041-PC-1 | 0.185 | 0.00 | 0.37 | In sediment | Mn micronodule | Few | Clay | Pelagic clay, light olive gray (5Y 6/1); zone of higher silt content between 0-6 cm | Micro-manganese nodules sparsely scattered throughout. | ||
| IO1578.041-PC | -69.0080 | -24.7770 | -4631 | IO1578.041-PC-2 | 1.040 | 0.37 | 1.71 | In sediment | Mn micronodule | Few | Mud | Mud, light olive gray (5Y 5/2) | Micro-manganese nodules sparsely scattered between 162-166 cm. | ||
| IO1578.041-PC | -69.0080 | -24.7770 | -4631 | IO1578.041-PC-3 | 2.050 | 1.71 | 2.39 | In sediment | Mn micronodule | Several | Clay | Pelagic clay, light olive gray (5Y 5/2) | Micro-manganese nodules common throughout. | ||
| IO1578.041-PC | -69.0080 | -24.7770 | -4631 | IO1578.041-PC-4 | 3.545 | 3.41 | 3.68 | In sediment | Mn micronodule | Several | Clay | Pelagic clay, light olive gray (5Y 5/2) | Micro-manganese nodules common throughout. | ||
| IO1578.045-PC | -64.9080 | -19.9720 | -4898 | IO1578.045-PC-1 | 0.400 | 0.00 | 0.80 | In sediment | Mn micronodule | Few | Clay | Pelagic clay, light olive gray (5Y 5/2) with sand content increases with depth between 70-80 cm | Micro-manganese nodules sparsely scattered between 70-80 cm. | ||
| IO1578.045-PC | -64.9080 | -19.9720 | -4898 | IO1578.045-PC-2 | 0.925 | 0.80 | 1.05 | In sediment | Mn micronodule | Few | Silt | Sandy silt, light olive gray (5Y 5/2), volcanic ash | Micro-manganese nodules sparsely scattered throughout. | ||
| IO1578.045-PC | -64.9080 | -19.9720 | -4898 | IO1578.045-PC-3 | 3.025 | 1.05 | 5.00 | In sediment | Mn micronodule | Few | Sand | Muddy sand, light olive gray (5Y 5/2), changing to olive gray (5Y 4/1) at 400 cm, sand becoming coarser with depth. Volcanic ash common throughout. | Micro-manganese nodules sparsely scattered between 105-390 cm. | ||
| IO1578.047-PC | -63.1530 | -20.1480 | -4890 | IO1578.047-PC-1 | 0.210 | 0.00 | 0.42 | In sediment | Mn micronodule | Few | Clay | Pelagic clay, light olive gray (5Y 5/2), gradationally changing to olive gray (5Y 4/1) at 18 cm, abruptly changing to light olive gray (5Y 5/2) at 43 cm | Micro-manganese nodules, concentrated in patches up to 2 mm, sparsely scattered between 0-42 cm. | ||
| IO1578.047-PC | -63.1530 | -20.1480 | -4890 | IO1578.047-PC-2 | 1.195 | 0.71 | 1.68 | In sediment | Mn micronodule | Several | Clay | Pelagic clay, light olive gray (5Y 5/2), gradationally changing to olive gray (5Y 4/1) at 18 cm, abruptly changing to light olive gray (5Y 5/2) at 43 cm | Micro-manganese nodules, concentrated in patches up to 2 mm, common between 71-168 cm. | ||
| IO1578.048-PC | -61.9950 | -20.0050 | -4890 | IO1578.048-PC-1 | 7.490 | 5.65 | 9.33 | In sediment | Mn micronodule | Few | Clay | Pelagic clay, light olive gray (5Y 5/2); slightly stained with manganese oxides throughout | Micro-manganese nodules sparsely scattered between 565-933 cm. | ||
| IO1578.048-PC | -61.9950 | -20.0050 | -4890 | IO1578.048-PC-2 | 6.715 | 6.71 | 6.72 | Buried | Mn coating | 1 | 0.3 cm | Pebble | Clay | Pelagic clay, light olive gray (5Y 5/2); slightly stained with manganese oxides throughout | 3 mm manganese oxide-encrusted pebble between 671-672 cm. |
| IO1578.049-PC | -61.0930 | -19.8650 | -4718 | IO1578.049-PC-1 | 7.300 | 5.20 | 9.40 | In sediment | Mn micronodule | Few | Clay | Pelagic clay, dark yellowish brown (10YR 4/2) | Micro-manganese nodules sparsely scattered throughout, often concentrated in stringers. | ||
| IO1578.050-PC | -64.9580 | -24.3500 | -4852 | IO1578.050-PC-1 | 7.130 | 6.70 | 7.56 | In sediment | Mn micronodule | Many | Clay | Pelagic clay, olive gray (5Y 4/1) | Micro-manganese nodules sparsely scattered between 670-756 cm, abundant as in-filling of bioturbations. | ||
| IO1578.050-PC | -64.9580 | -24.3500 | -4852 | IO1578.050-PC-2 | 7.900 | 7.56 | 8.24 | In sediment | Mn micronodule | Many | Silt | Silt, olive gray (5Y 4/1) | Micro-manganese nodules sparsely scattered between 756-824 cm, abundant as in-filling of bioturbations. | ||
| IO1578.052-PC | -66.2670 | -33.0680 | -4649 | IO1578.052-PC-1 | 0.235 | 0.23 | 0.24 | Buried | Mn coating | 1 | 0.6 cm | Pebble | Clay | Pelagic clay, yellowish gray (5Y 7/2) | Manganese encrusted pebble between 23-24 cm (6 mm). |
| IO1578.052-PC | -66.2670 | -33.0680 | -4649 | IO1578.052-PC-2 | 0.515 | 0.51 | 0.52 | Buried | Mn coating | 1 | 1.0 cm | Pebble | Clay | Pelagic clay, yellowish gray (5Y 7/2) | Manganese encrusted pebble between 51-52 cm (10 mm). |
| IO1578.052-PC | -66.2670 | -33.0680 | -4649 | IO1578.052-PC-3 | 1.755 | 0.00 | 3.51 | In sediment | Mn micronodule | Few | Clay | Pelagic clay, yellowish gray (5Y 7/2) | Micro-manganese nodules sparsely scattered throughout. | ||
| IO1578.055-PC | -64.0470 | -36.9670 | -4353 | IO1578.055-PC-1 | 1.190 | 1.16 | 1.22 | Buried | Mn coating | Many | 1.0 cm | Pebble | Clay | Pelagic clay, light olive gray (5Y 5/2), abruptly changing at 21 cm to yellowish gray (5Y 7/2) | Pebbles subangular to subrounded, coated with manganese oxides, particularly up to 10 mm abundant between 116-122 cm. |
| IO1578.055-PC | -64.0470 | -36.9670 | -4353 | IO1578.055-PC-2 | 4.415 | 4.41 | 4.42 | Buried | Mn crust | Many | 1.5 cm thick | Consolidated sediment | Clay | Pelagic clay, light olive gray (5Y 5/2), abruptly changing at 21 cm to yellowish gray (5Y 7/2) | 15 mm conglomerate between 441-443 cm, cemented and encrusted with manganese. |
| IO1578.055-PC | -64.0470 | -36.9670 | -4353 | IO1578.055-PC-3 | 4.440 | 4.42 | 4.46 | Buried | Mn coating | Many | 1.0 cm | Pebble | Clay | Pelagic clay, light olive gray (5Y 5/2), abruptly changing at 21 cm to yellowish gray (5Y 7/2) | Pebbles subangular to subrounded, coated with manganese oxides, particularly up to 10 mm abundant between 442-446 cm. |
| IO1578.055-PC | -64.0470 | -36.9670 | -4353 | IO1578.055-PC-4 | 2.575 | 0.00 | 5.15 | In sediment | Mn micronodule | Few | Clay | Pelagic clay, light olive gray (5Y 5/2), abruptly changing at 21 cm to yellowish gray (5Y 7/2) | Micro-manganese nodules sparsely scattered throughout. | ||
| IO1578.056-PC | -63.0970 | -38.4600 | -4512 | IO1578.056-PC-1 | 3.075 | 3.01 | 3.14 | In sediment | Mn micronodule | Many | Clay | Pelagic clay, light olive gray (5Y 5/2) | Zone of abundant micro-manganese nodules associated with laminae between 301-314 cm. | ||
| IO1578.056-PC | -63.0970 | -38.4600 | -4512 | IO1578.056-PC-2 | 4.445 | 4.42 | 4.47 | In sediment | Mn micronodule | Many | Clay | Pelagic clay, light olive gray (5Y 5/2) | Zone of abundant micro-manganese nodules associated with laminae between 442-447 cm. | ||
| IO1578.061-PC | -58.0020 | -41.0030 | -3438 | IO1578.061-PC-1 | 1.265 | 1.26 | 1.27 | Buried | Mn staining | 1 | 1.0 cm | Pebble | Mud | Diatomaceous, sandy mud, dusky yellow (5Y 6/4); sand content decreases with depth | 10 mm pebble stained with manganese oxides between 126-127 cm. |
| IO1578.061-PC | -58.0020 | -41.0030 | -3438 | IO1578.061-PC-2 | 1.260 | 1.25 | 1.27 | Buried | Mn coating | 1 | 1.5 cm | Pebble | Mud | Diatomaceous, sandy mud, dusky yellow (5Y 6/4); sand content decreases with depth | 15 mm pebble between 125-127 cm encrusted with micro-manganese nodules |
| IO1578.064-PC | -55.6580 | -41.1670 | -3420 | IO1578.064-PC-1 | 2.585 | 0.44 | 4.73 | In sediment | Mn micronodule | Few | Mud | Diatomaceous mud, light olive gray (5Y 5/2) | Micro-manganese nodules sparsely scattered throughout. |