Muséum National d'Histoire Naturelle (MNHN) (1975): Annotated record of the detailed examination of Mn deposits from NOSICAA cruise stations (R/V Marion Dufresne) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.854407, Supplement to: MNHN (1975): NOSICAA Cruise - MD06, R/V Marion Dufresne, Core list. Muséum National d'Histoire Naturelle, Paris, unpublished, https://www.pangaea.de/expeditions/events/MD06
Always quote citation above when using data! You can download the citation in several formats below.
Published: 1975 (exact date unknown) • DOI registered: 2015-11-24
Abstract:
The cores and dredges described at this site were taken on the NOSICAA cruise from 28 May until 5 July 1975 by the Muséum National d'Histoire Naturelle from the R/V Marion Dufresne. A total of 36 cores and dredges were recovered and are available at MNHN 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: -35.368452 * Median Longitude: 62.776071 * South-bound Latitude: -47.275000 * West-bound Longitude: 27.013333 * North-bound Latitude: -19.063333 * East-bound Longitude: 79.105000
Date/Time Start: 1975-05-29T00:00:00 * Date/Time End: 1975-07-03T00:00:00
Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 16.000 m
Event(s):
MD-AT750002 (MD 06-29-AT) * Latitude: -37.028333 * Longitude: 59.275000 * Date/Time: 1975-06-20T00:00:00 * Elevation: -5025.0 m * Recovery: 94 cm * Location: Indian Ocean * Campaign: MD06 (NOSICAA) * Basis: Marion Dufresne (1972) * Method/Device: Box corer (BC) * Comment: Institute: MNHN
MD-AT750003 (MD 06-33-AT) * Latitude: -44.046667 * Longitude: 59.895000 * Date/Time: 1975-06-24T00:00:00 * Elevation: -4820.0 m * Recovery: 81 cm * Location: Indian Ocean * Campaign: MD06 (NOSICAA) * Basis: Marion Dufresne (1972) * Method/Device: Box corer (BC) * Comment: Institute: MNHN
MD-DR750006 (MD 06-27-DR) * Latitude: -33.458333 * Longitude: 64.960000 * Date/Time: 1975-06-18T00:00:00 * Elevation: -4462.0 m * Recovery: 20 kg * Location: Indian Ocean * Campaign: MD06 (NOSICAA) * Basis: Marion Dufresne (1972) * Method/Device: Dredge (DRG) * Comment: Institute: MNHN
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):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
538 data points
Data
| 1 Event | 2 Date/Time | 3 Latitude | 4 Longitude | 5 Elevation [m] | 6 Method/Device | 7 Sample ID | 8 Depth sed [m] | 9 Depth top [m] | 10 Depth bot [m] | 11 Position | 12 Deposit type | 13 Quantity | 14 Size | 15 Substrate | 16 Sediment | 17 Comment | 18 Description |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MD-PS750050 | 1975-05-29 | -19.0633 | 60.6833 | -4387 | Piston corer | MD-PS750050-1 | 0.050 | 0.05 | 0.05 | Buried | Mn nodule | Several | 1.0 cm | Calcareous sandy ooze | Brown calcareous sandy ooze with nannofossils and foraminifers. Palagonite in siliciclastic fraction. Biogenous silica present (diatoms and radiolarjans) and amorphous components. Traces of philippsite. | 5-5 Fine gravel of polymetallic nodules (diameter: 1 cm) | |
| MD-PS750051 | 1975-05-29 | -19.0633 | 60.6833 | -4240 | Piston corer | MD-PS750051-1 | 0.800 | 0.80 | 0.80 | Buried | Mn crust | 1 | Red clay with phillipsite, oxydes, amorphous components and micro-nodules | 80-80 Oxydes and palagonite crust | |||
| MD-PS750051 | 1975-05-29 | -19.0633 | 60.6833 | -4240 | Piston corer | MD-PS750051-2 | 1.800 | 1.80 | 1.80 | Buried | Mn nodule | Several | Small | Red clay with phillipsite, oxydes, amorphous components and micro-nodules | 180-180 Small nodules | ||
| MD-PS750052 | 1975-05-30 | -22.3550 | 63.3383 | -4190 | Piston corer | MD-PS750052-1 | 0.500 | 0.50 | 0.50 | Buried | Mn nodule | Several | 4.0 cm | Calcareous ooze | Brown nannofossil ooze. Foraminifers and biogenous silica. | 50-50 Nodules layer (4 cm diameter). | |
| MD-PS750052 | 1975-05-30 | -22.3550 | 63.3383 | -4190 | Piston corer | MD-PS750052-2 | 1.100 | 1.10 | 1.10 | Buried | Mn nodule | Several | Fragment | Calcareous ooze | Brown nannofossil ooze. Foraminifers and biogenous silica. | 110-110 Nodules or oxyde crusts debris. | |
| MD-PS750053 | 1975-05-31 | -23.0800 | 64.6567 | -4088 | Piston corer | MD-PS750053-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | 1.0 cm | Calcareous ooze | Brown nannofossil ooze with Foraminifers. Traces of micronodules and phillipsite. | 0-0 Subspherical nodules layer (1 cm diameter) | |
| MD-PS750054 | 1975-05-31 | -22.9767 | 65.0483 | -3877 | Piston corer | MD-PS750054-1 | 0.850 | 0.70 | 1.00 | Buried | Mn nodule | Several | 3.0-4.0 cm | Calcareous ooze | Brown nannofossil ooze with amorphous components and foraminifers. | 70-100 Nodules bed (3-4 cm). | |
| MD-PS750054 | 1975-05-31 | -22.9767 | 65.0483 | -3877 | Piston corer | MD-PS750054-2 | 1.500 | 1.50 | 1.50 | Buried | Mn nodule | Several | Calcareous ooze | Brown clay with coccoliths and discoasters. Siliciclastic and phillipsite fractions. | 150-150 Nodules | ||
| MD-PS750054 | 1975-05-31 | -22.9767 | 65.0483 | -3877 | Piston corer | MD-PS750054-3 | 2.750 | 2.75 | 2.75 | Buried | Mn nodule | Several | Calcareous ooze | Brown clay with coccoliths and discoasters. Siliciclastic and phillipsite fractions. | 275-275 Nodules | ||
| MD-PS750054 | 1975-05-31 | -22.9767 | 65.0483 | -3877 | Piston corer | MD-PS750054-4 | 5.750 | 5.75 | 5.75 | Buried | Mn nodule | Several | Calcareous ooze | Brown clay with coccoliths and discoasters. Siliciclastic and phillipsite fractions. | 575-575 Nodules | ||
| MD-PS750054 | 1975-05-31 | -22.9767 | 65.0483 | -3877 | Piston corer | MD-PS750054-5 | 7.975 | 7.75 | 8.20 | In sediment | Mn micronodule | Several | Red clay | Red clay with amorphous components and phillipsite. Occurrence of siliciclastic and carbonate fractions at the top of the unit. | 70-100 Nodules bed (3-4 cm). 150-150 Nodules 275-275 Nodules. 575-575 Nodules 775-820 Red clay with amorphous components, phillipsite, and micro-nodules. Siliciclastic. | ||
| MD-PS750058 | 1975-06-03 | -24.3083 | 76.4033 | -4260 | Piston corer | MD-PS750058-1 | 0.900 | 0.00 | 1.80 | Buried | Mn crust | Several | Fragment | Rock; basalt and palagonite | Red clay | Red clay with oxydes and phillipsite. | 0-180 Rock fragments (basalt ?) and palagonite with an oxyde crust. |
| MD-PS750065 | 1975-06-08 | -27.7483 | 79.1050 | -4282 | Piston corer | MD-PS750065-1 | 1.600 | 1.60 | 1.60 | In sediment | Mn micronodule | Several | Calcareous ooze | Brown carbonaceous clayed ooze with oxydes, phillipsite, foraminifers, and coccoliths. Discoasters and traces of siliciclastic. | 160-160 Micronodules | ||
| MD-PS750065 | 1975-06-08 | -27.7483 | 79.1050 | -4282 | Piston corer | MD-PS750065-2 | 2.700 | 2.70 | 2.70 | Buried | Mn crust | 1 | Rock; palagonite fragment | Red clay | Red clay with phillipsite and oxydes.Traces of biogenic carbonates | 270-270 Hard encrusted layer of manganese oxydes with palagonite | |
| MD-PS750065 | 1975-06-08 | -27.7483 | 79.1050 | -4282 | Piston corer | MD-PS750065-3 | 3.700 | 3.70 | 3.70 | In sediment | Mn micronodule | Several | Red clay | Red clay with phillipsite and oxydes.Traces of biogenic carbonates | 370-370 Micronodules | ||
| MD-PS750068 | 1975-06-09 | -31.2017 | 78.5700 | -3210 | Piston corer | MD-PS750068-1 | 0.350 | 0.00 | 0.70 | In sediment | Mn micronodule | Several | Calcareous ooze | Brown nannofossil ooze with foraminifers. Amorphous components and micro-nodules. Traces of biogenous silica at the top. | 0-70 Amorphous components and micronodules. 200-200 Micronodules | ||
| MD-PS750068 | 1975-06-09 | -31.2017 | 78.5700 | -3210 | Piston corer | MD-PS750068-2 | 2.000 | 2.00 | 2.00 | In sediment | Mn micronodule | Several | Calcareous ooze | Beige nannofossil ooze with foraminifers and cocoliths | 200-200 Micronodules | ||
| MD-PS750075 | 1975-06-17 | -34.3900 | 66.4450 | -4725 | Piston corer | MD-PS750075-1 | 15.300 | 14.60 | 16.00 | Buried | Mn nodule | Several | 1.0-2.0 cm | Siliceous carbonaceous to calcareous ooze with nannofossils, biogenous silica, and amorphous components. Foraminifers rare. Fine siliciclastic and micro-nodules. Rare discoasters at the bottom of the piston core. | 1460-1600 Two beds of (1 to 2 cm) nodules. Nodules expected to have been at the sediment water interface. | ||
| MD-PS750075 | 1975-06-17 | -34.3900 | 66.4450 | -4725 | Piston corer | MD-PS750075-2 | 16.000 | 16.00 | 16.00 | Buried | Mn nodule | Several | Red clay | Red clay with philippsite, amorphous components, and oxydes. | 1600-1600 Nodules layer | ||
| MD-DR750006 | 1975-06-18 | -33.4583 | 64.9600 | -4462 | Dredge | MD-DR750006-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Many | 2.0 cm | Core: Smectite, philippsite, palagonite, volcanic glass, tholeite (rare) | Calcareous ooze | Brown calcareous ooze | Weight: 20 kg. Manganese botryoidal nodules (diam. 2 cm). Nuclei mostly smectites and phillipsite. Rare nuclei as volcanic glass altered in palagonite. Very as fragment of tholeiitic basalt fragment. |
| MD-PS750076 | 1975-06-18 | -33.4750 | 64.9400 | -4520 | Piston corer | MD-PS750076-1 | 0.025 | 0.00 | 0.05 | Buried | Mn crust | 1 | 1.0 cm thick | Calcareous ooze | Brown calcareous ooze with coccoliths and biogenous silica. Siliciclastic. Traces of foraminifers. | Polymetallic crust at interface with red clay rich in phillipsite, amorphous components, and oxydes. Core catcher: basalt and pillow-lava fragments with palagonite and oxydes crusts. | |
| MD-DR750007 | 1975-06-19 | -34.5750 | 63.5167 | -4147 | Dredge | MD-DR750007-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Many | 3.0 cm | Core; smectite, phillipsite, palagonite or basalt (rare) | Calcareous ooze | Brown calcareous ooze | Manganese nodules of botryoidal shape with 3 cm mean diameter. Nuclei of nodules usually made of smectites and phillipsite, rarely of volcanic ash altered in palagonite, and very rarely of fragments of tholeiitic basalts. |
| MD-DR750007 | 1975-06-19 | -34.5750 | 63.5167 | -4147 | Dredge | MD-DR750007-2 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Few | 3.0-4.0 cm | Rock; weathered basalt | Brown calcareous ooze | Rare fragments (mean size: 3 to 4 cm) of massive polymetallic crusts with knoll-shaped surfaces. Polymetallic crusts supported by strongly weathered basalts (clay-minerals). | |
| MD-PS750077 | 1975-06-19 | -34.5250 | 63.5500 | -4702 | Piston corer | MD-PS750077-1 | 0.500 | 0.50 | 0.50 | Buried | Mn nodule | Few | Small | Red clay | Red clay with oxydes, amorphous components and fine siliciclastic. Traces of phillipsite and biogenous silica. | 50-50 a Few manganese nodules. In the core catcher: weathered basalt and small nodules. | |
| MD-PS750078 | 1975-06-19 | -34.5783 | 63.5100 | -4200 | Piston corer | MD-PS750078-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | 3.0 cm | Calcaeous ooze | Brown calcareous ooze with coccoliths, oxydes, and foraminifers. | 0-0 3 cm large nodules with oxyde crust fragments. | |
| MD-PS750078 | 1975-06-19 | -34.5783 | 63.5100 | -4200 | Piston corer | MD-PS750078-2 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Several | Fragment | Calcaeous ooze | Brown calcareous ooze with coccoliths, oxydes, and foraminifers. | 0-0 3 cm large nodules with oxyde crust fragments. | |
| MD-PS750078 | 1975-06-19 | -34.5783 | 63.5100 | -4200 | Piston corer | MD-PS750078-3 | 0.400 | 0.40 | 0.40 | Buried | Mn nodule | Several | 1.0-2.0 cm | Calcaeous ooze | Brown calcareous ooze with coccoliths, oxydes, and foraminifers. | 40-40 Nodules (1-2 cm) | |
| MD-PS750078 | 1975-06-19 | -34.5783 | 63.5100 | -4200 | Piston corer | MD-PS750078-4 | 3.460 | 3.46 | 3.46 | Buried | Mn nodule | Several | 3.0 cm | Calcaeous ooze | Brown calcareous ooze with coccoliths, oxydes, and foraminifers. | 346-346 Nodules (3 cm) | |
| MD-PS750078 | 1975-06-19 | -34.5783 | 63.5100 | -4200 | Piston corer | MD-PS750078-5 | 5.770 | 5.77 | 5.77 | Buried | Mn nodule | Several | Calcaeous ooze | Brown calcareous ooze with coccoliths, oxydes, and foraminifers. | 577-577 Nodules with crust | ||
| MD-DS750001 | 1975-06-21 | -37.0200 | 59.2900 | -4995 | Piston corer | MD-DS750001-1 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Several | 5.0 cm x 2.0 cm (Wide x Thick) | Rock with smectite, quartz (siliciclastic) | Diatomite | Beige to brown diatomites | Flat concretions, 5 cm wide and 2-3 cm thick. Few nodules. Concretion nuclei: rocks fragments, smectite, siliciclastic (quartz, feldspars), rare phillipsite crystals. |
| MD-AT750002 | 1975-06-20 | -37.0283 | 59.2750 | -5025 | Box corer | MD-AT750002-1 | 0.200 | 0.20 | 0.20 | Buried | Mn nodule | Several | 1.0 cm | Core; rock fragment with smectite, quartz (siliciclastic) | Calcareous ooze | Brown calcareous ooze with biogenous silica and nannofossils. Oxydized thin siliciclastic and pyrite debris. | 20-20 Flat polymetallic nodules. Core: fragments of rocks,smectites, siliciclastic (quartz, feldspaths), rare phillipsite. Diam: 1.0 cm, density: 15 nodules/m2, weight: 0.35 kg/m2 |
| MD-DR750008 | 1975-06-22 | -39.5600 | 60.8883 | -4410 | Dredge | MD-DR750008-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Many | 5.0-6.0 cm | Core; weathered basalt | Calcareous ooze and red clay | Brown calcareous ooze and red clay | Spherical manganese nodules with a mean diameter of 5 to 6 cm. Nuclei of nodules made of weathered basalt. |
| MD-DR750008 | 1975-06-22 | -39.5600 | 60.8883 | -4410 | Dredge | MD-DR750008-2 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Several | 10.0-15.0 cm thick | Rock; palagonite and argillaceous material | Calcareous ooze and red clay | Brown calcareous ooze and red clay | Massive crusts with a knolly surface, 10 to 15 cm thick. Polymetallic crusts on top of argillaceous material resulting from the weathering of the basalt. |
| MD-PS750081 | 1975-06-22 | -39.5467 | 60.8650 | -4250 | Piston corer | MD-PS750081-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | Small | Calcareous ooze | Brown nannofossil ooze with foraminifers and biogenous silica. | 0-0 Small polymetallic nodules. | |
| MD-PS750081 | 1975-06-22 | -39.5467 | 60.8650 | -4250 | Piston corer | MD-PS750081-2 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | Small | Red clay | Red clay with oxydes, amorphous components, phillipsite. Siliciclastic fraction. Clinoptilolite at the bottom. | 0-0 Small polymetallic nodules. In the core catcher occurrence of a polymetallic oxyde crust testifying of a re-entry of the piston corer. | |
| MD-PS750082 | 1975-06-23 | -39.6233 | 61.0800 | -5230 | Piston corer | MD-PS750082-1 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Several | Fragment | Red clay | Red clay with amorphous components, oxydes, and phillipsite. Siliciclastic finer at the bottom. Detrital carbonates at the bottom. | In the core catcher: fragments of polymetallic crusts. | |
| MD-DR750009 | 1975-06-23 | -41.3883 | 59.7700 | -3900 | Dredge | MD-DR750009-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Many | 3.0 cm | Core; volcanic ash or palagonite | Calcareous ooze and red clay | Brown siliceous and carbonaceous ooze, red clays, and white calcareous ooze of Eocene age. | Manganese nodules of botryoidal shape, with a mean diameter of 3 cm. Rare occurrence of nuclei made of volcanic ash altered in palagonite.Very rare tholeiitic basalt nuclei. |
| MD-DR750009 | 1975-06-23 | -41.3883 | 59.7700 | -3900 | Dredge | MD-DR750009-2 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Calcareous ooze and red clay | Brown siliceous and carbonaceous ooze, red clays, and white calcareous ooze of Eocene age. | Massive or laminated polymetallic crusts with a mamillated surface. Crusts on top of strongly weathered basalt (clay). | |||
| MD-AT750003 | 1975-06-24 | -44.0467 | 59.8950 | -4820 | Box corer | MD-AT750003-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | Core; weathered rock fragments | Siliceous-calcareous ooze | Brown siliceous-calcareous ooze with diatoms, nannofossils, foraminifers and very fine siliciclastic. Opaque minerals(pyrite ?) | 0-0 Nodules, bothroidal shape. At top, concretion centres: glado-detrital and siliciclastic: weathered feldspaths, quartz, fragments of rocks(granite, granito-gneiss, shists). | |
| MD-AT750003 | 1975-06-24 | -44.0467 | 59.8950 | -4820 | Box corer | MD-AT750003-2 | 0.100 | 0.10 | 0.10 | Buried | Mn nodule | Several | Siliceous-calcareous ooze | Brown siliceous-calcareous ooze with diatoms, nannofossils, foraminifers and very fine siliciclastic. Opaque minerals(pyrite ?) | 10-10 Nodules. | ||
| MD-AT750003 | 1975-06-24 | -44.0467 | 59.8950 | -4820 | Box corer | MD-AT750003-3 | 0.575 | 0.55 | 0.60 | Buried | Mn nodule | Several | Siliceous ooze | Brown siliceous ooze with diatoms, and siliciclastic more abundant at the base. | 55-60 Nodules | ||
| MD-AT750003 | 1975-06-24 | -44.0467 | 59.8950 | -4820 | Box corer | MD-AT750003-4 | 0.750 | 0.70 | 0.80 | Buried | Mn nodule | Siliceous ooze | Brown siliceous ooze with diatoms, and siliciclastic more abundant at the base. | 70-80 Nodules | |||
| MD-DR750010 | 1975-06-24 | -44.0117 | 59.9500 | -4840 | Dredge | MD-DR750010-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Many | 4.0 cm | Core; weathered rock fragments | Siliceous-calcareous ooze | Botryoidal-shaped nodules, mean size: 4 cm. Nuclei of nodules made of glacial siliciclastic material: weathered felspars, quartz, rock fragments (granite, gneiss, shales, continental basalt). Abundant framboidal pyrite. | |
| MD-PS750084 | 1975-06-25 | -47.0000 | 62.8283 | -3930 | Piston corer | MD-PS750084-1 | 1.050 | 1.05 | 1.05 | Buried | Mn nodule | 2.0-3.0 cm | Calcareous ooze | Alternating brown (10YR5/4) and beige (10YR7/4) nanofossil oozes. | 105-105 Nodules (2-3 cm) | ||
| MD-PS750085 | 1975-06-26 | -47.2100 | 62.9517 | -3930 | Piston corer | MD-PS750085-1 | 0.100 | 0.10 | 0.10 | Buried | Mn nodule | Several | 1.0-2.0 cm | Calcareous ooze | Alternating brown (10YR4/2) and beige (10YR6/2) nanofossil oozes with foraminifers and biogenic silica. | 10-10 Nodules (1-2 cm) | |
| MD-PS750085 | 1975-06-26 | -47.2100 | 62.9517 | -3930 | Piston corer | MD-PS750085-2 | 0.550 | 0.55 | 0.55 | Buried | Mn nodule | Several | Calcareous ooze | Alternating brown (10YR4/2) and beige (10YR6/2) nanofossil oozes with foraminifers and biogenic silica. | 55-55 Nodules | ||
| MD-PS750085 | 1975-06-26 | -47.2100 | 62.9517 | -3930 | Piston corer | MD-PS750085-3 | 1.025 | 1.00 | 1.05 | Buried | Mn nodule | Several | 2.0-3.0 cm | Calcareous ooze | Alternating brown (10YR4/2) and beige (10YR6/2) nanofossil oozes with foraminifers and biogenic silica. | 100-105 Nodules (2-3 cm) | |
| MD-PS750086 | 1975-06-26 | -47.0000 | 63.0383 | -3930 | Piston corer | MD-PS750086-1 | 0.000 | 0.00 | 0.00 | Surface | Mn slab | 1 | Diatomite | Beige to white diatomite with radiolarians. Coccoliths, foraminifers, and fine silt. Opaque minerals (pyrite ?). Scarce white areas rich in biogenous carbonates. | 0-0 Nodular crust. | ||
| MD-PS750086 | 1975-06-26 | -47.0000 | 63.0383 | -3930 | Piston corer | MD-PS750086-2 | 12.800 | 12.80 | 12.80 | Buried | Mn crust | Calcareous-siliceous mud | Green calcareous-siliceous mud with biogenic silics and rich in foraminifera | 1280-1280 Nodular crust | |||
| MD-DR750011 | 1975-06-26 | -47.2750 | 62.7650 | -3910 | Dredge | MD-DR750011-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Many | Core; weathered rock | Siliceous-calcareous ooze and diatomite | Kidney-shaped nodules and plates, mean size 3.5 cm. Nodule nuclei made of glacio-detritic and siliciclastic material: coarse sand and gravel (quartz, feldspars, ferromagnesian minerals, pumice, fragments of continental basalt). | ||
| MD-DR750011 | 1975-06-26 | -47.2750 | 62.7650 | -3910 | Dredge | MD-DR750011-2 | 0.000 | 0.00 | 0.00 | Surface | Mn plate | Several | Core; palagonite | Siliceous-calcareous ooze and diatomite | Kidney-shaped nodules and plates, mean size 3.5 cm. Nodule nuclei made of glacio-detritic and siliciclastic material: coarse sand and gravel (quartz, feldspars, ferromagnesian minerals, pumice, fragments of continental basalt). | ||
| MD-PS750087 | 1975-06-26 | -47.2617 | 62.7100 | -3915 | Piston corer | MD-PS750087-1 | 0.100 | 0.10 | 0.10 | Buried | Mn nodule | Several | Calcareous ooze and diatomite | Alternating white calcareous ooze with nannofossils, foraminifers, and biogenous silica, and beige diatomite with siliciclastic and opaque minerals (pyrite ?). | 10-10 Nodules | ||
| MD-PS750087 | 1975-06-26 | -47.2617 | 62.7100 | -3915 | Piston corer | MD-PS750087-2 | 0.650 | 0.50 | 0.80 | Buried | Mn nodule | Several | Calcareous ooze and diatomite | Alternating white calcareous ooze with nannofossils, foraminifers, and biogenous silica, and beige diatomite, with siliciclastic and opaque minerals (pyrite ?). | 50-80 Alterning layers of nodules | ||
| MD-DR750012 | 1975-07-03 | -37.5467 | 27.0133 | -2550 | Dredge | MD-DR750012-1 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Several | Large | Rock; nontronite ? | Hard ground | Massive polymetallic crusts (40-50 kg) with less abundant nodules. Whitish coated material made of well-crystallized phillipsite with fibrous clay minerals sometimes agglomerated in balls (nontronite?). Siliciclastic fraction (quartz and felspars) rare. | |
| MD-DR750012 | 1975-07-03 | -37.5467 | 27.0133 | -2550 | Dredge | MD-DR750012-2 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Several | Large | Rock; palagonite (layered) | Hard ground | Massive polymetallic crusts (40-50 kg) with less abundant nodules. Whitish coated material made of well-crystallized phillipsite with fibrous clay minerals sometimes agglomerated in balls (nontronite?). Siliciclastic fraction (quartz and felspars) rare. | |
| MD-DR750012 | 1975-07-03 | -37.5467 | 27.0133 | -2550 | Dredge | MD-DR750012-3 | 0.000 | 0.00 | 0.00 | Surface | Mn coating | Several | Bone | Hard ground | Some coated bones, including a rostrum of Ziphiidae |