Citation:

PANGAEA.875096

Name: Annotated record of the detailed examination of Mn deposits from DSDP Leg 80 (Holes 548, 548A, 550, 551)
Published: 1985
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Deep Sea Drilling Project Leg 80 investigated the structural evolution and depositional history of the Goban Spur and the adjacent Porcupine Abyssal Plain. From the results of DSDP Leg 48, structural relationships and fossil assemblages indicated that the rifting of the Armorican margin created submarine relief of as much as 2000 m. Seafloor spreading began no later than the early Aptian and was accompanied by rapid crustal subsidence in the form of regional downwarping and tilting. Sites 548 to 551 were consequently placed along a transect across the continent/ocean boundary on the sediment-starved Goban Spur in order to further explore this particular structure.

Related to:

Waples, Douglas W; Vaos, Staphanos P; Townsend, Hilary A; Snyder, Scott W; Sigal, Jacques; Reynolds, Leslie A; Otsuka, Kenichi; Müller, Carla; Montadert, Lucien; Mazzullo, James M; Masson, Douglas G; Cunningham, Robert; Loubere, Paul; de Graciansky, Pierre C; Poag, C Wylie (1985): Initial Reports of the Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project, U.S. Government Printing Office, LXXX, 679 pp + 1258 pp, https://doi.org/10.2973/dsdp.proc.80.1985

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: 48.814300 * Median Longitude: -12.817375 * South-bound Latitude: 48.515200 * West-bound Longitude: -13.501500 * North-bound Latitude: 48.915800 * East-bound Longitude: -12.164000

Date/Time Start: 1981-06-10T00:00:00 * Date/Time End: 1981-07-16T00:00:00

Minimum DEPTH, sediment/rock: 53.75 m * Maximum DEPTH, sediment/rock: 501.47 m

Event(s):

80-548 * Latitude: 48.915800 * Longitude: -12.164000 * Date/Time: 1981-06-10T00:00:00 * Elevation: -1251.0 m * Penetration: 211 m * Recovery: 210.2 m * Location: North Atlantic/SPUR * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 35 cores; 211 m cored; 0 m drilled; 99.6 % recovery

80-548A * Latitude: 48.915500 * Longitude: -12.164500 * Date/Time: 1981-06-10T00:00:00 * Elevation: -1251.0 m * Penetration: 551.5 m * Recovery: 248.6 m * Location: North Atlantic/SPUR * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 37 cores; 334.2 m cored; 9.5 m drilled; 74.4 % recovery

80-550 * Latitude: 48.515200 * Longitude: -13.439500 * Date/Time: 1981-06-30T00:00:00 * Elevation: -4420.0 m * Penetration: 536.5 m * Recovery: 252.6 m * Location: North Atlantic/PLAIN * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 43 cores; 400 m cored; 23.5 m drilled; 63.1 % recovery

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	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	Substrate type	Substrate
10	Sediment type	Sediment
11	Comment	Comment
12	Description	Description
13	File name	File name
14	Uniform resource locator/link to image	URL image

License:

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

Size:

108 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 Substrate	10 Sediment	11 Comment	12 Description	13 File name	14 URL image
80-548	80-548-35-CC-1	80-548-35-CC	211.00	Buried	Mn crust	1	3.0 cm	Consolidated sediment	Ooze	Blue gray nannofossil ooze (Upper Pliocene)	A phosphatic and partly manganiferous layer forms a 3-cm-thick crust at the bottom of the upper Campanian chalk fragment (Site 548, Core 35, Cored Interval: 200.9-211.0, page 73)
80-548A	80-548A-32,146-148-1	80-548A-32,146-148	501.47	In sediment	Mn rich layer	1			Chalk	Yellowish gray nannofossil chalk (Middle Maestritchian)	Brownish streaks (Fe?Mn?) (Site 548A, Core 32, Cored Interval: 500.0-509.5, page 87)
80-550	80-550-24-1,100-101-1	80-550-24-1,100-101	309.50	Buried	Mn nodule	1	5.0 cm	Core;chalk	Ooze	Brown marly oozes and chalks rich in nannofossils (Lower Eocene)	A layered Mn rich nodule several centimeters in diameter (Site 550, Core 24, Cored Interval: 308.5-318.0, page 298)	80-550-24-1_Karpoff.jpg	80-550-24-1_Karpoff.jpg
80-550	80-550-24-1,135-1	80-550-24-1,135	309.85	Buried	Mn crust	1		Consolidated sediment	Clay	Blackish speckled clayey deposit (Lower Eocene)	Overlain by an Mn crust (Site 550, Core 24, Cored Interval: 308.5-318.0, page 298)
80-550	80-550-24-2,46-48-1	80-550-24-2,46-48	310.47	Buried	Mn crust	Several	Fragment	Consolidated sediment	Ooze	Clayey black condensed marly ooze (Lower Eocene)	Mn crust fragments in section rich in Mn micronodules (Site 550, Core 24, Cored Interval: 308.5-318.0, page 298)	80-550-24-2_Karpoff.jpg	80-550-24-2_Karpoff.jpg
80-550	80-550-24-2,70-71-1	80-550-24-2,70-71	310.70	Buried	Mn crust	Several	Fragment	Consolidated sediment	Clay	Condensed, encrusted, clayey deposit (Lower Eocene)	Mn crust fragments in section rich in Mn micronodules. Black dendritic structures extend into the sediments below. (Site 550, Core 24, Cored Interval: 308.5-318.0, page 298)	80-550-24-2_Karpoff.jpg	80-550-24-2_Karpoff.jpg
80-550	80-550-36-3,82-85-1	80-550-36-3,82-85	426.33	Buried	Mn nodule	Several	0.1-1.0 cm		Claystone	Pelagic brown claystones (Lower Paleocene)	Small manganese nodules, in section rich in Mn micronodules. 1 mm to 1 cm in size (old fecal pellets replaced by barium-rich manganates) (Site 550, Core 36, Cored Interval: 422.5-432.0, page 304)	80-550-36-3_Karpoff.jpg	80-550-36-3_Karpoff.jpg
80-551	80-551-H1-4,75-1	80-551-H1-4,75	53.75	Buried	Mn nodule	Several	Up to 0.5 cm		Ooze	Yellow to light olive brown, soft, calcareous ooze	Scattered black nodules (up to 5 mm size) (Site 551, Core H1, Cored Interval: 47.0-56.5, page 369)
80-551	80-551-H1-5,50-1	80-551-H1-5,50	55.00	Buried	Mn nodule	Several	Up to 0.5 cm		Ooze	Yellow to light olive brown, soft, calcareous ooze (Middle Eocene)	Scattered black nodules (up to 5 mm size) (Site 551, Core H1, Cored Interval: 47.0-56.5, page 369)
80-551	80-551-5-CC,0-1	80-551-5-CC,0	135.29	In sediment	Mn micronodule	Several			Shale	Black shale poor in carbonate (Lower Turonian) (Lower Eocene)	5% Mn micronodules (Site 551, Core 5, Cored Interval: 132.5-138.5, page 372)
80-551	80-551-6-2,106-1	80-551-6-2,106	141.06	Buried	Mn staining			Chalk	Chalk	Nannofossil chalk with occasional zones of yellow gray laminations and black (manganese oxide) staining (UpperCenomanian)	Black-stained bands (manganese dendrites?) are scattered throughout. (Site 551, Core 6, Cored Interval: 138.5-, page 372)