Citation:

dsdp.proc.77.125.1984

Name: Annotated record of the detailed examination of Mn deposits from DSDP Leg 77 (Holes 536, 537, 538A, 540)
Published: 1984
License: https://creativecommons.org/licenses/by/3.0/

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Published: 1984 (exact date unknown) • DOI registered: 2017-02-22

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Abstract:

Mesozoic benthic foraminifers, recovered from five single-bit holes drilled in the southern Gulf of Mexico on Deep Sea Drilling Project Leg 77 are rare, poorly preserved, and scattered throughout the dominantly redeposited sediments. The Mesozoic sequence at basin Sites 535 and 540 consists largely of laminated limestone with smaller amounts of skeletal limestone and pure pelagic limestone, whereas the Mesozoic sediments at basement Sites 536, 537, and 538 (Hole 538A) consist largely of oolitic-oncolitic limestone.

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: 23.775325 * Median Longitude: -85.051575 * South-bound Latitude: 23.489800 * West-bound Longitude: -85.460300 * North-bound Latitude: 23.933500 * East-bound Longitude: -84.370800

Date/Time Start: 1981-01-09T00:00:00 * Date/Time End: 1981-01-19T00:00:00

Minimum DEPTH, sediment/rock: 1.16 m * Maximum DEPTH, sediment/rock: 205.90 m

Event(s):

77-536 * Latitude: 23.489800 * Longitude: -85.209700 * Date/Time: 1981-01-09T00:00:00 * Elevation: -2790.0 m * Penetration: 213 m * Recovery: 65.3 m * Location: Gulf of Mexico/SLOPE * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 23 cores; 213 m cored; 0 m drilled; 30.7 % recovery

77-537 * Latitude: 23.933500 * Longitude: -85.460300 * Date/Time: 1981-01-11T00:00:00 * Elevation: -3123.0 m * Penetration: 225 m * Recovery: 15.9 m * Location: Gulf of Mexico/KNOLL * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 16 cores; 144.5 m cored; 9 m drilled; 11 % recovery

77-538A * Latitude: 23.849200 * Longitude: -85.165500 * Date/Time: 1981-01-14T00:00:00 * Elevation: -2742.0 m * Penetration: 332.5 m * Recovery: 137.6 m * Location: Gulf of Mexico/KNOLL * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 36 cores; 332.5 m cored; 0 m drilled; 41.4 % 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

License:

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

Size:

105 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
77-536	77-536-20-1,0-30-1	77-536-20-1,0-30	175.15	Buried	Mn staining	2		Rock; limestone	Limestone	Limestone (skeletal grainstone and mudstone).	Two pieces stained with iron-oxides and/or manganese oxides and appear weathered. (Site 536, Core 20, Cored Interval: 175.0-184.5 m, page 246)
77-536	77-536-23,0-480-1	77-536-23,0-480	205.90	Buried	Mn staining	Several		Rock; dolomite	Dolomite	Dolomite with variable color from yellowish brown to grayish brown	Some manganese staining. Reddish yellow iron-stains throughout core. (Site 536, Core 23, Cored Interval: 203.5-213.0 m, page 247)
77-537	77-537-3-1,40-80-1	77-537-3-1,40-80	88.60	Buried	Mn crust	Several	Fragment		Ooze	Interbedded nannofossil ooze, volcanic ash, limestone and zeolitic calcareous sandy mud (Upper Paleocene)	Contains scattered manganese and plant fragments. (Site 537, Core 3, Cored Interval: 88.0-92.5 m, page 272)
77-537	77-537-3-1,65-65-1	77-537-3-1,65-65	88.65	Buried	Mn nodule	1		Core; consolidated sediment	Ooze	Interbedded nannofossil ooze, volcanic ash, limestone and zeolitic calcareous sandy mud (Upper Paleocene)	Manganese concretion at 65 cm with a light-colored, irregular core (Site 537, Core 3, Cored Interval: 88.0-92.5 m, page 272)
77-537	77-537-3-2,45-52-1	77-537-3-2,45-52	89.85	Buried	Mn crust	1	Thin		Mud	A thin pale brown to pale yellow interval of zeolitic-calcareous sandy mud occurs between 12 and 41 cm of Section 2.	Hardground with a thin manganese crust at its top and contains a mixture of unspecified carbonate fragments, zeolites, a green clay with a botryoidal surface texture and spherulitic cross sections. (Site 537, Core 3, Cored Interval: 88.0-92.5 m, page 272)
77-537	77-537-3-2,45-52-2	77-537-3-2,45-52	89.85	Buried	Mn coating	Several		Foraminifera	Mud	A thin pale brown to pale yellow interval of zeolitic-calcareous sandy mud occurs between 12 and 41 cm of Section 2.	Manganese-replaced tests of planktonic foraminifers, small ammonites, thin-shelled pelecypods, and rare radiolarians (Site 537, Core 3, Cored Interval: 88.0-92.5 m, page 272)
77-538A	77-538A-20-4,0-30-1	77-538A-20-4,0-30	176.55	Buried	Mn crust	1	0.5 cm thick	Consolidated sediment	Chalk	Nannofossil-foraminiferal and foraminiferal nannofossil chalk. Black manganese oxide patches and spots scattered throughout.	Section 4 coated with a 0.5 cm of black manganese oxide crust and brown iron-oxides. ( Site 538A, Core 20, Cored Interval: 173.5-183.0 m, page 317)
77-538A	77-538A-20-4,0-30-2	77-538A-20-4,0-30	176.55	In sediment	Mn micronodule	Several			Chalk	Nannofossil-foraminiferal and foraminiferal nannofossil chalk. Black manganese oxide patches and spots scattered throughout.	Burrows common below crust and sand-size Mn fragments decrease in abundance downcore below the crust. ( Site 538A, Core 20, Cored Interval: 173.5-183.0 m, page 317)
77-538A	77-538A-21-1,32-57-1	77-538A-21-1,32-57	183.49	Buried	Mn crust	1	4.0 cm thick		Chalk	White (N9) to yellowish gray (5Y 8/1) foraminiferal nannofossil chalk with light gray streaks and irregular band (Lower Eocene)	4 cm thick brown-black manganese oxide crust at top over irregular chalk surface. (Site 538A, Core 21, Cored Interval: 183.0-192.5 m, page 318)
77-538A	77-538A-21-1,57-150-2	77-538A-21-1,57-150	184.00	In sediment	Mn micronodule	Several			Chalk	Light gray to yellowish gray foraminiferal nannofossil chalk (Lower Eocene)	Chalk below crust has large burrows filled with white chalk; others filled with sand-size MnO2 fragments. (Site 538A, Core 21, Cored Interval: 183.0-192.5 m, page 318)
77-538A	77-538A-21-3,87-1	77-538A-21-3,87	186.87	In sediment	Mn micronodule	Several			Chalk	Principally foraminiferal nannofossil chalk, white (N9) to light gray (N8) (Middle Campanian)	MnO2 spots scattered throughout. (Site 538A, Core 21, Cored Interval: 183.0-192.5 m, page 318)
77-540	77-540-1-11,116-1	77-540-1-11,116	1.16	In sediment	Mn rich layer	1			Marl	Light olive gray nannofossil marl (Upper Pleistocene)	High manganiferous character of the Pleistocene sedimentation (Core 1, 1665 ppm of Mn), possibly correlated with higher bottom-water circulation. (Site 540, Core 1, Cored Interval: 0-4.5 m, page 130)