Shipboard Scientific Party (1958): Annotated record of the detailed examination of Mn deposits from DOWNWIND Expedition stations [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.854942
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
The cores described in this report were taken on the DOWNWIND Expedition in October 1957 to February 1958 by the Scripps Institution of Oceanography from the R/V Spencer F. Baird and the R/V Horizon. A total of 201 cores and dredges were recovered and are available at Scripps for sampling and study.
Related to:
SCRIPPS Institution of Oceanography (1958): DOWNWIND (1957-1958) Expedition, Core List, R/V Spencer F. Baird and R/V Horizon. Scripps Institution of Oceanography, UC San Diego, unpublished, 39 pp, https://www.ngdc.noaa.gov/mgg/curator/data/horizon/downwind/15995002.pdf
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: -21.667222 * Median Longitude: -128.779189 * South-bound Latitude: -46.733000 * West-bound Longitude: -148.650000 * North-bound Latitude: 24.366700 * East-bound Longitude: -81.000000
Date/Time Start: 1957-10-25T00:00:00 * Date/Time End: 1958-02-23T00:00:00
Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 1.015 m
Event(s):
DWBD1 * Latitude: 21.450000 * Longitude: -126.717000 * Date/Time: 1957-10-25T00:00:00 * Elevation: -4300.0 m * Location: Pacific Ocean * Campaign: DOWNWIND-B1 (DNWB0ABD) * Basis: Spencer F. Baird * Method/Device: Dredge (DRG)
DWBD2 * Latitude: 10.433330 * Longitude: -130.633330 * Date/Time: 1957-10-29T00:00:00 * Elevation: -4890.0 m * Campaign: DOWNWIND-B1 (DNWB0ABD) * Basis: Spencer F. Baird * Method/Device: Grab (GRAB)
DWBD4 * Latitude: -17.333330 * Longitude: -146.500000 * Date/Time: 1957-11-12T00:00:00 * Elevation: -2823.0 m * Location: Pacific Ocean * Campaign: DOWNWIND-B1 (DNWB0ABD) * Basis: Spencer F. Baird * Method/Device: Dredge (DRG)
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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 | SIO | |||
| 2 | Latitude of event | Latitude | SIO | |||
| 3 | Longitude of event | Longitude | SIO | |||
| 4 | Elevation of event | Elevation | m | SIO | ||
| 5 | Identification | ID | SIO | |||
| 6 | DEPTH, sediment/rock | Depth sed | m | SIO | Geocode | |
| 7 | Depth, top/min | Depth top | m | SIO | ||
| 8 | Depth, bottom/max | Depth bot | m | SIO | ||
| 9 | Position | Position | SIO | Visual description | ||
| 10 | Deposit type | Deposit type | SIO | |||
| 11 | Quantity of deposit | Quantity | SIO | |||
| 12 | Size | Size | SIO | |||
| 13 | Substrate type | Substrate | SIO | |||
| 14 | Sediment type | Sediment | SIO | |||
| 15 | Comment | Comment | SIO | |||
| 16 | Description | Description | SIO |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
669 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 Comment | 16 Description |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DWHH4 | 24.3667 | -125.0000 | -3930 | DWHH4-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 1 | 2.0 cm | Clay | Entirely a light brown clay | A 2 cm Mn nodule at the top. | |
| DWHH7 | 11.0833 | -128.5667 | -4770 | DWHH7-1 | 0.050 | 0.00 | 0.10 | Buried | Mn nodule | 1 | Globigerina ooze | From region of subdued hills. Top 10 cm is Globigerina ooze overlaying Pacific red clay. Mn nodule (25 grams) caught in ball breaker. | |||
| DWHT8B | 9.0500 | -129.0000 | -4650 | DWHT8B-1 | 0.170 | 0.17 | 0.17 | Buried | Mn nodule | 1 | Clay | Entirely a mottled light and dark buff clay. | With 1.5 cm Mn nodules at 17cm and 59 cm. | ||
| DWHT8B | 9.0500 | -129.0000 | -4650 | DWHT8B-2 | 0.590 | 0.59 | 0.59 | Buried | Mn nodule | 1 | Clay | Entirely a mottled light and dark buff clay. | With 1.5 cm Mn nodules at 17cm and 59 cm. | ||
| DWHH14 | -14.4667 | -135.4833 | -4400 | DWHH14-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 1 | 1.0 cm (fragment) | Clay | Chocolate brown clay | At top a 1cm angular piece of Mn nodule. | |
| DWHD25 | -22.8333 | -144.4833 | -4150 | DWHD25-1 | 0.000 | 0.00 | 0.00 | Surface | Mn coating | 1 | 2;5 cm | Tooth; shark | 1 specimen of Mn-coated shark's tooth, 1 inch long | ||
| DWHG31 | -35.1833 | -135.5333 | -4700 | DWHG31-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Core; obsidian | One Mn nodule, Mn crust around obsidian (?) core. Hilly. | ||||
| DWHG34 | -44.2167 | -127.3333 | -4600 | DWHG34-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 2 | Small | Calcareous ooze | Light grey to white calcareous ooze with forams | Two small (1cm) Mn nodules on top | |
| DWHG34 | -44.2167 | -127.3333 | -4600 | DWHG34-2 | 0.115 | 0.11 | 0.12 | Buried | Mn nodule | 2 | Small | Calcareous ooze | Light grey to white calcareous ooze with forams | Two small (1cm) Mn nodules at 11-12 cm | |
| DWHG34 | -44.2167 | -127.3333 | -4600 | DWHG34-3 | 0.520 | 0.52 | 0.52 | Buried | Mn nodule | 2 | Calcareous ooze | Highly mottled calcareous clay becoming darker near the bottom | At least two 1cm manganese nodules at 52 cm | ||
| DWHG34 | -44.2167 | -127.3333 | -4600 | DWHG34-4 | 0.800 | 0.80 | 0.80 | Buried | Mn nodule | 1 | Calcareous ooze | Highly mottled calcareous clay becoming darker near the bottom | One Mn nodule at 80 cm | ||
| DWHG34 | -44.2167 | -127.3333 | -4600 | DWHG34-5 | 1.015 | 1.00 | 1.03 | Buried | Mn coating | 1 | Bone | Calcareous ooze | Highly mottled calcareous clay becoming darker near the bottom | A 2.5 cm bone at 100-103 cm | |
| DWH48 | -42.0000 | -102.0000 | -4240 | DWH48-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 1 | Clay | Chocolate clay grading to dark chocolate at base. | Mn nodule on top. | ||
| DWHH27 | -29.9167 | -140.0833 | -4360 | DWHH27-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 2 | 1.0 cm | Clay | Chocolate clay with whitish calcareous material at surface. | The core catcher contains two 1cm manganese nodules. | |
| DWHH92 | 9.9833 | -118.0000 | -4295 | DWHH92-1 | 0.010 | 0.00 | 0.02 | Buried | Mn nodule | 1 | Fragment | Red clay | Red clay. Moderately brown clay. | 0-2cm Portion of a nodule or crust | |
| DWHH92 | 9.9833 | -118.0000 | -4295 | DWHH92-2 | 0.550 | 0.55 | 0.55 | In sediment | Mn rich layer | Red clay | Red clay. Moderately brown clay. | At the very bottom of the core found very coarse and black material (manganese crust?) | |||
| DWBG2 | 21.4533 | -126.7167 | -4450 | DWBG2-1 | 0.000 | 0.00 | 0.00 | Surface | Mn fragment | Several | Clay | Brown clay | MnO2 fragments | ||
| DWBG3 | 17.0167 | -129.7667 | -4987 | DWBG3-1 | 0.000 | 0.00 | 0.00 | Surface | Mn fragment | Several | Clay | Brown clay | MnO2 fragments | ||
| DWBG7 | 8.8000 | -130.8000 | -4917 | DWBG7-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Few | Clay | Mottled brown clay with many corroded radiolarians | Possible Mn nodules at top. Possibly Miocene. | ||
| DWBG15 | -3.0333 | -131.8833 | -3396 | DWBG15-1 | 0.530 | 0.52 | 0.54 | Buried | Mn coating | 1 | 52x54 cm | Rock; palagonite | Foraminifera ooze | Whitish foram ooze | A large (4x2 cm) lump of manganese impregnated decomposed rock at 52-54 cm. The darker, more manganeous side of the lump is downward in the core. |
| DWBG16 | -6.0833 | -132.8833 | -4855 | DWBG16-1 | 0.070 | 0.03 | 0.11 | Buried | Mn nodule | 6 | Calcareous clay | Tan calcareous clay with at least becoming somewhat lighter and mottled below 20 cm. | 6 Mn nodules at 3-11 cm. | ||
| DWBG16 | -6.0833 | -132.8833 | -4855 | DWBG16-2 | 0.475 | 0.31 | 0.64 | Buried | Mn fragment | Several | Small | Calcareous clay | Tan calcareous clay with at least becoming somewhat lighter and mottled below 20 cm. | Small pieces of MnO2 at 31-64 cm. | |
| DWBG16 | -6.0833 | -132.8833 | -4855 | DWBG16-3 | 0.930 | 0.93 | 0.93 | In sediment | Mn rich layer | Clay | Chocolate clay with some mottlings. | A 0.5 cm lump of MnO2 at 93 cm | |||
| DWBG16 | -6.0833 | -132.8833 | -4855 | DWBG16-4 | 1.010 | 1.01 | 1.01 | In sediment | Mn rich layer | Clay | Chocolate clay with some mottlings. | One lump of MnO2 at 101 cm. | |||
| DWBG17 | -12.8500 | -135.2167 | -4318 | DWBG17-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | Small | Clay | Chocolate clay containing forams (corroded?) | In the core catcher, a chacolate clay containing forams (corroded?) and small manganese nodules. | |
| DWBG18 | -13.6167 | -135.5183 | -4337 | DWBG18-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 2 | 1.5 cm | Clay | Brown-chocolate clay some fish debris and zeolites. | Low 30-fm relief. At top, two Mn nodules, approx. 1.5 in diameter. | |
| DWBG19 | -14.9833 | -136.0333 | -4465 | DWBG19-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | Red clay | Red clay with a few forams, radiolarians and zeolites. | Mn nodules at top. | ||
| DWBG19 | -14.9833 | -136.0333 | -4465 | DWBG19-2 | 0.065 | 0.00 | 0.13 | Buried | Mn nodule | Several | Red clay | Red clay with a few forams, radiolarians and zeolites. | 0-13 An agglomeration of dark brown clay and Mn nodules | ||
| DWBG19 | -14.9833 | -136.0333 | -4465 | DWBG19-3 | 0.065 | 0.00 | 0.13 | Buried | Mn coating | Several | 0.5-4.0 cm | Pebble | Red clay | Red clay with a few forams, radiolarians and zeolites. | 0-13 Mn coated angular pebbles ranging from in size from 0.5-4.0 cm. At least 5 of them. |
| DWBG19 | -14.9833 | -136.0333 | -4465 | DWBG19-4 | 0.260 | 0.26 | 0.26 | Buried | Mn nodule | 1 | 0.5 cm | Clay | Mottled buff to dark brown clay. | 0.5 cm Mn nodule at 26 cm | |
| DWBG30A | -19.8333 | -148.6500 | -4620 | DWBG30A-1 | 0.055 | 0.05 | 0.06 | In sediment | Mn rich layer | Clay | A uniform dark brown clay | A uniform dark brown clay except for some blackish patches (MnO2?) at 5-6 cm. | |||
| DWBG30B | -19.8333 | -148.6500 | -4620 | DWBG30B-1 | 0.055 | 0.04 | 0.07 | Buried | Mn nodule | 1 | 3.0 cm | Clay | A uniform dark brown clay throughout its length | A large manganese nodule (3 cm) | |
| DWBG30B | -19.8333 | -148.6500 | -4620 | DWBG30B-2 | 0.055 | 0.04 | 0.07 | In sediment | Mn micronodule | Several | Clay | A uniform dark brown clay throughout its length | Perhaps some manganese sand at 4-7 cm. | ||
| DWBG31 | -21.7500 | -147.6333 | -4820 | DWBG31-1 | 0.470 | 0.34 | 0.60 | In sediment | Mn rich layer | Clay | A uniform dark brown clay | An apparently uniform dark brown clay witha somewhat indurated more highly manganous layer at 36-40 cm. | |||
| DWBG37 | -29.1500 | -143.0167 | -4120 | DWBG37-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 1 | 4.0 cm | Red clay | Red clay with forams and zeolites. | On 100-fm hill. 4-cm Mn nodule on top and 4-cm lump of red clay with forams and zeolites. | |
| DWBG40 | -31.2167 | -141.2000 | -4280 | DWBG40-1 | 0.000 | 0.00 | 0.00 | Surface | Mn fragment | Few | Small | Irregular 50-100 fm relief. A few small pieces of manganese. | |||
| DWBG43 | -34.0167 | -138.9167 | -4721 | DWBG43-1 | 0.000 | 0.00 | 0.00 | Surface | Mn fragment | Several | Small | Red clay | Small pieces of manganese and about a teaspoonful of red clay. Subdued 100-fm, relief. | ||
| DWBG44 | -34.4167 | -138.7833 | -4860 | DWBG44-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 3 | Small | Three small Mn nodules | |||
| DWBG44 | -34.4167 | -138.7833 | -4860 | DWBG44-2 | 0.000 | 0.00 | 0.00 | Surface | Mn coating | 1 | Pebble | One manganese-coated pebble | |||
| DWBG45 | -35.1333 | -138.2000 | -2520 | DWBG45-1 | 0.000 | 0.00 | 0.00 | Surface | Mn fragment | Several | Several fragments of manganese. On top of a seamount. | ||||
| DWBG46 | -36.3833 | -137.2500 | -4680 | DWBG46-1 | 0.000 | 0.00 | 0.00 | Surface | Mn slab | Large | 1.0 cm thick | A large manganese slab about 1.5 cm thick covers the entire top of the core. | |||
| DWBG47 | -36.5500 | -137.4000 | -4700 | DWBG47-1 | 0.080 | 0.08 | 0.08 | Buried | Mn nodule | 1 | Clay | Rather light brown clay merging downward to a dark brown clay | At 8cm from top is a manganese nodule. | ||
| DWBG47 | -36.5500 | -137.4000 | -4700 | DWBG47-2 | 0.720 | 0.71 | 0.73 | Buried | Mn nodule | 1 | Large | Clay | Rather light brown clay merging downward to a dark brown clay. | 71-73 cm a large manganese nodule. | |
| DWBG48 | -37.0833 | -137.0000 | -4940 | DWBG48-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 1 | 2.0x4.0 cm | Red clay | Dark brown clay | At top is a 4cmx2cm Mn nodule. | |
| DWBG48 | -37.0833 | -137.0000 | -4940 | DWBG48-2 | 0.105 | 0.10 | 0.11 | Buried | Mn nodule | 1 | 1.0 cm | Red clay | Dark brown clay | 10-11 cm a 1cm Mn nodule. | |
| DWBG48 | -37.0833 | -137.0000 | -4940 | DWBG48-3 | 0.715 | 0.70 | 0.73 | Buried | Mn nodule | 2 | 2.0 cm | Red clay | Dark brown clay | 70-73 cm. A couple of 2cm Mn nodules. | |
| DWBG52 | -40.6000 | -132.8167 | -5120 | DWBG52-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | Large | Mud | Mottled tan and whitish mud | Mn nodules near the top. One is large. Irregular 100-fm. relief. | |
| DWBG54 | -41.4000 | -129.1000 | -4880 | DWBG54-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 1 | Only a Mn nodule, some sediment was seen to wash out of the corer as it surfaced. Irregular 50-fm. relief. | ||||
| DWBG55 | -41.5333 | -128.2500 | -4750 | DWBG55-1 | 0.000 | 0.00 | 0.00 | Surface | Mn fragment | Few | A few fragments of Mn. Subdued 100-fm. relief. | ||||
| DWBG56 | -42.2667 | -125.8333 | -4560 | DWBG56-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | Calcareous clay | Brown calcareous clay, lighter near the top | Mn nodules at the top | ||
| DWBG56 | -42.2667 | -125.8333 | -4560 | DWBG56-2 | 0.020 | 0.01 | 0.03 | Buried | Mn nodule | 3 | 1.5 cm | Calcareous clay | Brown calcareous clay, lighter near the top | 1-3 cm Two or 3 manganese nodules approx. 1-1.5cm in diameter. | |
| DWBG56 | -42.2667 | -125.8333 | -4560 | DWBG56-3 | 0.610 | 0.60 | 0.62 | Buried | Mn nodule | 1 | 0.5 cm | Calcareous clay | Brown calcareous clay, lighter near the top | 60-62 cm. At least one 0.5 cm Mn nodule. | |
| DWBG57A | -42.8333 | -125.5333 | -4560 | DWBG57A-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | 1.0-2.0 cm | Calcareous ooze | Mottled calcareous ooze | Manganese nodules (approx. 1x2 cm) at the top and at 10-12 cm | |
| DWBG57B | -42.8333 | -125.5333 | -4560 | DWBG57B-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 1 | 3.0 cm | Calcareous ooze | Mottled calcareous ooze | A manganese nodule about 3cm at top | |
| DWBG57B | -42.8333 | -125.5333 | -4560 | DWBG57B-2 | 0.080 | 0.05 | 0.11 | Buried | Mn nodule | Several | Calcareous ooze | Mottled calcareous ooze | Several smaller Mn nodules at 5-11 cm. | ||
| DWBG-58 | -43.1170 | -125.3830 | -4640 | DWBG-58-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 1 | 3.0x2.0 cm | Clay | Mottled brown and whitish calcareous clay | A 3x2 cm Mn nodule at top. Subdued 50-fm. relief. | |
| DWBG-59 | -44.3830 | -124.6500 | -4500 | DWBG-59-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 1 | Calcareous clay | Mottled light and dark brown calcareous clay | Mn at top. Subdued 50-100 fm. relief. | ||
| DWBG147B | 1.4500 | -116.2167 | -4000 | DWBG147B-1 | 0.010 | 0.00 | 0.02 | Buried | Mn nodule | 1 | 2.0 cm | Calcareous ooze | Mottled calcareous ooze | A 2cm Mn nodule at 0-2cm | |
| DWBG147B | 1.4500 | -116.2167 | -4000 | DWBG147B-2 | 0.055 | 0.06 | 0.06 | Buried | Mn fragment | 1 | Small | Calcareous ooze | Mottled calcareous ooze | A small piece of manganese at 5.5 cm | |
| DWHD47 | -41.9830 | -102.0170 | -4200 | DWHD47-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Many | 2.0 up to 10.0 cm | About 15 kilos of manganese nodules ranging from marble sized to plate sized. Most are about the size of golf balls. The nodules are crumbly. | |||
| DWBD8 | -20.0000 | -81.0000 | -951 | DWBD8-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | A good haul of corals, Mn nodules and shark teeth, and calcareous rocks. | ||||
| DWHD16 | -16.4830 | -146.5500 | -1270 | DWHD16-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Many | 2.0 up 10.0 cm | 500 lbs. Mn nodules and coral. Manganese nodules vary from golf ball size to foot size. Biggest piece of coral is about 100 lbs. Bathymetry: Guyot (seamount) | |||
| DWHD55 | -37.0670 | -81.8330 | -4000 | DWHD55-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 17 | 1.0-6.0 cm | Clay | 17 manganese nodules ranging from 1-6cm accross. Several have smooth surfaces while others have typically a rough surface. One piece of yellow material (?hard clay?) and some clay. | ||
| DWHD42 | -44.3000 | -109.5330 | -3210 | DWHD42-1 | 0.000 | 0.00 | 0.00 | Surface | Mn staining | 2 | Small | Rock | Two small rocks (ice rafted) covered with thin Mn stain. East flank of E. Pacific Rise. | ||
| DWHD72 | -25.5170 | -85.2330 | -920 | DWHD72-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Many | Globigerina sand | 300 lbs. Flat manganese nodules and corals. The nodules ranged from 1 inch to 1 foot across. | |||
| DWHD72 | -25.5170 | -85.2330 | -920 | DWHD72-2 | 0.000 | 0.00 | 0.00 | Surface | Mn staining | Several | Coral | Globigerina sand | The corals ranged through the same limits and were stained with manganese. Top of a guyot. | ||
| DWBD7 | -46.7330 | -123.0170 | -4100 | DWBD7-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Several | Small | Several small Mn nodules | |||
| DWBD2 | 10.4333 | -130.6333 | -4890 | DWBD2-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | 5 | 2.0-4.0 cm | Five 2-4 cm Mn nodules. | |||
| DWHH32 | -40.5500 | -131.8330 | -5010 | DWHH32-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Only a core-catcher sample. Apparently stopped | |||||
| DWBG122A-C | -26.5830 | -114.8670 | -2545 | DWBG122A-C-1 | 0.000 | 0.00 | 0.00 | Surface | Mn grain | Several | No sample, except for some Mn grains and forams in the core-catcher. | ||||
| DWBD1 | 21.4500 | -126.7170 | -4300 | DWBD1-1 | 0.000 | 0.00 | 0.00 | Surface | Mn nodule | Many | Roughly 60 kg., of which 1/3 are rounded Mn nodules | ||||
| DWBD1 | 21.4500 | -126.7170 | -4300 | DWBD1-2 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Several | Rock; palagonite | 2/3 are fragments of a crust. Pieces of white amorphous greasy material are common. | |||
| DWHD15 | -15.3830 | -136.3000 | -4480 | DWHD15-1 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Many | 1.0-5.0 cm with 3.5 mm Mn crust | Rock; pumice | 10 lbs. Manganese covered rocks. The rocks are white pumice; sharp edges, 1-5 cm, more or less rectangular. The manganese crust is brownish black, fine grained, 3.5 mm thick. | ||
| DWBD4 | -17.3333 | -146.5000 | -2823 | DWBD4-1 | 0.000 | 0.00 | 0.00 | Surface | Mn crust | Several | 3 kg of MnO2 crusts and calcareous fragments. | ||||
| DWBD5 | -16.3333 | -146.1667 | -1500 | DWBD5-1 | 0.000 | 0.00 | 0.00 | Surface | Mn coating | Several | Fragments | Coral | 3 kg of coral debris coated with MnO2. |