Citation:

dsdp.proc.43.1979

Name: Annotated record of the detailed examination of Mn deposits from DSDP Leg 43 (Holes 384, 385, 386 and 387)
Published: 1979
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Leg 43 was planned to examine a wide variety of geological problems at numerous sites in the deep western North Atlantic basin. A variety of objectives were to be addressed on Leg 43,among these: 1) to investigate the sedimentary development of the North American basin, 2) to recover sediments containing late Mesozoic and Cenozoic fossils for biostratigraphic, paleobiogeographic, and paleoceanographic studies 3) to recover samples of basaltic basement from the smooth crest of the basement ridge associated with the northern part of the New England seamounts, 4) To examine the age and nature of volcanism on Bermuda and along the New England seamount chain, in order to test ideas on volcanic* origin such as the "hotspot" hypothesis, and to examine volcaniclastic lithofacies and assess the role of volcanic sources for certain North Atlantic sediments.

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):

Deep Sea Drilling Project (DSDP)

NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS)

Coverage:

Median Latitude: 35.309275 * Median Longitude: -60.934125 * South-bound Latitude: 31.186800 * West-bound Longitude: -67.666700 * North-bound Latitude: 40.360800 * East-bound Longitude: -51.663300

Date/Time Start: 1975-07-12T00:00:00 * Date/Time End: 1975-08-01T00:00:00

Minimum DEPTH, sediment/rock: 23.275 m * Maximum DEPTH, sediment/rock: 867.130 m

Event(s):

43-384 * Latitude: 40.360800 * Longitude: -51.663300 * Date/Time: 1975-07-12T00:00:00 * Elevation: -3909.0 m * Penetration: 330.3 m * Recovery: 110.7 m * Location: North Atlantic/RIDGE * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 21 cores; 185 m cored; 9.3 m drilled; 59.8 % recovery

43-385 * Latitude: 37.369500 * Longitude: -60.157500 * Date/Time: 1975-07-18T00:00:00 * Elevation: -4936.0 m * Penetration: 392.9 m * Recovery: 64 m * Location: North Atlantic/SEAMOUNT * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 23 cores; 218.2 m cored; 9.5 m drilled; 29.3 % recovery

43-386 * Latitude: 31.186800 * Longitude: -64.249000 * Date/Time: 1975-07-24T00:00:00 * Elevation: -4782.0 m * Penetration: 973.8 m * Recovery: 434.3 m * Location: North Atlantic/CONT RISE * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 65 cores; 617.4 m cored; 9.5 m drilled; 70.3 % recovery

Comment:

In Site 43-384, the upper part of the first core was not recovered so that it was not possible to clarify the presence of manganese nodules at the surface of the sediment. Many of those have been found in top position for several cores but are suspected to have flowed-in. Thus their "Position" data field has been left blank.

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	Method/Device	Comment
1	Event label	Event
2	Identification	ID
3	Sample code/label	Sample label
4	DEPTH, sediment/rock	Depth sed	m		Geocode
5	Position	Position		Visual description
6	Deposit type	Deposit type
7	Quantity of deposit	Quantity
8	Size	Size
9	Sediment type	Sediment
10	Comment	Comment
11	Description	Description

License:

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

Size:

144 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Event	2 ID	3 Sample label	4 Depth sed [m]	5 Position	6 Deposit type	7 Quantity	8 Size	9 Sediment	10 Comment	11 Description
43-384	43-384-1-1,25-1	s	51.050		Mn nodule	1	6.0x3.5x3.0 cm	Ooze	Homogeneous structureless pale yellow marly nanno ooze (Middle Eocene)	Manganese nodule 6x3.5x3 cm in top (15-20 cm) of core. Possible downhole contamination. (Site 384, Core 1, Cored Interval : 50.8-60.4 m, page 133)
43-384	43-384-5-1,11-17-1	43-384-5-1,11-17	89.140		Mn nodule	2		Ooze	Homogeneous structureless pale yellow siliceous nanno ooze (Lower Eocene)	Two manganese nodules and a pebble were found in the zone 1:11-17. Possible downhole contamination. (Site 384, Core 5, Cored Interval : 89.0-98.6 m, page 135)
43-384	43-384-5-3,100-107-1	43-384-5-3,100-107	93.035		Mn nodule	Several	1.5-2.0 cm	Ooze	Homogeneous structureless pale yellow siliceous nanno ooze (Lower Eocene)	Small nodules (1.5 and 2 cm long) and pebble found at 3:100-107 Possible downhole contamination. (Site 384, Core 5, Cored Interval : 89.0-98.6 m, page 135)
43-384	43-384-6-1,0-7-1	43-384-6-1,0-7	98.850		Mn nodule	1		Ooze	Homogeneous structureless pale yellow siliceous nanno ooze (Lower Eocene)	Upper 7 cm of core contains one Mn nodule, 6.5x3.5x3.5 cm. Possible downhole contamination. (Site 384, Core 6, Cored Interval : 98.6-108.0 m, page 135)
43-384	43-384-7-1,45-77-1	43-384-7-1,45-77	108.610		Mn nodule	1	6.5x3.5x3.5 cm	Chalk	Homogeneous structureless pale yellow siliceous nanno chalk (Lower Paleocene)	Section 1:45 to 77 cm is disturbed and contains managnese nodules. Possible downhole contamination. (Site 384, Core 7, Cored Interval : 108,0-117,3 m, page 136)
43-384	43-384-8-1,65-106-1	43-384-8-1,65-106	118.155		Mn nodule	Several		Chalk	Homogeneous structureless pale yellow siliceous nanno chalk (Lower Paleocene)	Mn nodules and small pebble rubble in downhole contaminated zone from 1:65-106. Possible downhole contamination. (Site 384, Core 8, Cored Interval : 117.3-126.9 m, page 136)
43-384	43-384-9-0,0-20-1	43-384-9-0,0-20	127.000		Mn nodule	Several		Chalk	Homogeneous pale yellow to light yellowish brown, moderately mottled siliceous nanno chalk (Lower Paleocene)	Top 20 cm of core 0 is highly disturbed and contains manganese nodules. Possible downhole contamination. (Site 384, Core 9, Cored Interval : 126.9-136.4 m, page 137)
43-384	43-384-12-1,58-71-1	43-384-12-1,58-71	155.645		Mn nodule	Several		Chalk	Homogeneous pale yellow moderately mottled siliceous nanno chalk (Lower Paleocene)	Top of core (1:58-71) contains downhole contamination of manganese nodules and pebbles. Possible downhole contamination. (Site 384, Core 12, Cored Interval : 155.0-164.6 m, page 138)
43-384	43-384-14-1,56-62-1	43-384-14-1,56-62	174.190		Mn nodule	Several		Chalk	Homogeneous pale yellow siliceous nanno chalk (Maestritchian)	1:56-62 contains manganese nodules. Possible downhole contamination. (Site 384, Core 14, Cored Interval: 173.6-183.2 m, page 139)
43-385	43-385-1-1,98-99-1	43-385-1-1,98-99	23.275	Buried	Mn nodule	1	3.0 cm	Clay	Clay, firm, intensely mottled (Pleistocene)	A 3-cm iron-manganese oxide nodule with a core of quartz grains and contains a single lower upper Miocene Discoaster neorectus nannofossil. (Site 385, Core 1, Cored Interval: 22.3-31.8 m, page 179)
43-385	43-385-1-1,121-124-1	43-385-1-1,121-124	23.525	Buried	Mn nodule	1	3.0 cm	Clay	Clay, firm, intensely mottled (Pleistocene)	A highly fracured 3-cm iron-manganese oxide nodule (Site 385, Core 1, Cored Interval: 22.3-31.8 m, page 179)
43-385	43-385-22-CC,0-1	43-385-22-CC,0	364.500	Buried	Mn coating	1	Rock; claystone	Claystone	Reddish brown silty claystone	Well lithified with Mn dendrites (Site 385, Core 22, Cored Interval : 355.0-364.5, page 185)
43-386	43-386-35-1,50-1	43-386-35-1,50	632.500	In sediment	Mn micronodule	Several	01.-0.3 cm	Claystone	Red claystone of dusky to dark red to grayish red color (Middle Paleocene)	Manganese micronodules (1- 3mm diameter) (Site 386, Core 35, Cored Interval: 632.0-641.5 m, page 254)
43-386	43-386-35-2,75-1	43-386-35-2,75	634.250	In sediment	Mn micronodule	Several	01.-0.3 cm	Claystone	Red claystone of dusky to dark red to grayish red color (Middle Paleocene)	Manganese micronodules (1- 3mm diameter) (Site 386, Core 35, Cored Interval: 632.0-641.5 m, page 254)
43-386	43-386-35-3,75-1	43-386-35-3,75	635.750	In sediment	Mn micronodule	Several	01.-0.3 cm	Claystone	Red claystone of dusky to dark red to grayish red color (Middle Paleocene)	Manganese micronodules (1- 3mm diameter) (Site 386, Core 35, Cored Interval: 632.0-641.5 m, page 254)
43-386	43-386-55-5,123-1	43-386-55-5,123	867.130	In sediment	Mn micronodule	Few		Phosphorite	Calcareous phosphatic sandy rock (Lower Cretaceous)	3% Mn micronodules (Site 386, Core 55, Cored Interval: 859.9-869.3 m, page 264)
43-387	43-387-1-1,90-1	43-387-1-1,90	32.700	In sediment	Mn micronodule	Several		Clay	Calcareous clay, pale brown, very soft (Quaternary)	Scattered black Mn-oxides spots (Site 387, Core 1, Cored Interval: 31.8-41.3 m)
43-387	43-387-1-5,75-1	43-387-1-5,75	38.550	In sediment	Mn micronodule	Several		Clay	Calcareous clay, pale brown, very soft (Quaternary)	Scattered black Mn-oxides spots (Site 387, Core 1, Cored Interval: 31.8-41.3 m)