Citation:

dsdp.proc.20.133.1973

Name: Annotated record of the detailed examination of Mn deposits from DSDP Leg 20 (Sites 195, 196, 198A)
Published: 1973
License: https://creativecommons.org/licenses/by/3.0/

Always quote citation above when using data! You can download the citation in several formats below.

Published: 1973 (exact date unknown) • DOI registered: 2016-12-30

RIS Citation BibTeX Citation Text Citation ShareShow Map Google Earth

Abstract:

The sea floor of the western Pacific is covered by five stratigraphic units: (l)an eastward thinning wedge of late Tertiary silty clay, primarily of volcanic origin, (2) a Cretaceous to Tertiary zeolitic red clay, (3) a Late Cretaceous to Tertiary chalk/chert sequence, (4) a Cretaceous clay, and (5) a basal chalk/chert sequence. The basal chalk was deposited on the young crust at the crest of the mid-oceanic ridge, while the upper chalk was deposited beneath the equator, and the abyssal clays were deposited in abyssal depths in mid latitudes. A kinematic model has been constructed that outlines the deposition of these units on growing crust, which not only was displaced westward away from the accretion center of the mid-oceanic ridge, but northward under the equator. The average northward component of motion for the Pacific plate has been 2 cm per year from 0 to 30 m.y. and 4.4 cm per year from 30 to 100 m.y. The deep-sea deposits of the Pacific are basically and systematically time transgressive. Claims of general synchroneity for either lithostratigraphy or acoustostratigraphy are rejected as inconsistent with both the drilling data and the kinematic model of Pacific pelagic stratigraphy. A few more well sampled holes in the ancient Pacific plate combined with an appropriately refined kinematic model should yield a 'rather detailed history of the Pacific plate since the Jurassic.

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: 29.571733 * Median Longitude: 150.045933 * South-bound Latitude: 25.825700 * West-bound Longitude: 146.978800 * North-bound Latitude: 32.773300 * East-bound Longitude: 154.584200

Date/Time Start: 1971-09-22T00:00:00 * Date/Time End: 1971-10-10T00:00:00

Minimum DEPTH, sediment/rock: 38.90 m * Maximum DEPTH, sediment/rock: 123.84 m

Event(s):

20-195 * Latitude: 32.773300 * Longitude: 146.978800 * Date/Time: 1971-09-22T00:00:00 * Elevation: -5968.0 m * Penetration: 278 m * Recovery: 14 m * Location: North Pacific/ABYSSAL FLOOR * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 4 cores; 31.5 m cored; 0 m drilled; 44.4 % recovery

20-196 * Latitude: 30.116200 * Longitude: 148.574800 * Date/Time: 1971-09-29T00:00:00 * Elevation: -6194.0 m * Penetration: 377 m * Recovery: 10 m * Location: North Pacific/ABYSSAL FLOOR * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 5 cores; 32 m cored; 8 m drilled; 31.2 % recovery

20-198A * Latitude: 25.825700 * Longitude: 154.584200 * Date/Time: 1971-10-10T00:00:00 * Elevation: -5958.0 m * Penetration: 258 m * Recovery: 25.7 m * Location: North Pacific/BASIN * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 4 cores; 34.5 m cored; 16.5 m drilled; 74.5 % 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	Principal Investigator	Method/Device	Comment
1	Event label	Event		Heezen, Bruce C
2	Identification	ID		Heezen, Bruce C
3	Sample code/label	Sample label		Heezen, Bruce C
4	DEPTH, sediment/rock	Depth sed	m	Heezen, Bruce C		Geocode
5	Position	Position		Heezen, Bruce C	Visual description
6	Deposit type	Deposit type		Heezen, Bruce C
7	Quantity of deposit	Quantity		Heezen, Bruce C
8	Sediment type	Sediment		Heezen, Bruce C
9	Comment	Comment		Heezen, Bruce C
10	Description	Description		Heezen, Bruce C

License:

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

Size:

128 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 Sediment	9 Comment	10 Description
20-195	20-195-1-11,147-1	20-195-1-11,147	64.47	In sediment	Mn micronodule	Several	Clay	Silty clay, mottled throughout with darker brown silty clay which contains manganese micronodules (Cenozoic)	10% Mn micronodules. ( Site 195, Core 1, Cored Interval; 63-72.5 m, page 28 )
20-195	20-195-1-2,91-1	20-195-1-2,91	65.41	In sediment	Mn micronodule	Several	Clay	Silty clay, mottled throughout with darker brown silty clay which contains manganese micronodules (Cenozoic)	10% Mn micronodules. ( Site 195, Core 1, Cored Interval; 63-72.5 m, page 28 )
20-195	20-195-2-11,146-1	20-195-2-11,146	121.46	In sediment	Mn micronodule	Several	Clay	Silty clay bearing diatoms and radiolaria (Upper Miocene)	10% Mn micronodules. ( Site 195, Core 2, Cored Interval: 120-129.5 m, page 28 )
20-195	20-195-2-21,120-1	20-195-2-21,120	122.70	In sediment	Mn micronodule	Several	Clay	Sandy silty clay (Upper Miocene)	10% Mn micronodules. ( Site 195, Core 2, Cored Interval: 120-129.5 m, page 28 )
20-195	20-195-2-3,84-1	20-195-2-3,84	123.84	In sediment	Mn micronodule	Many	Silt	Radiolaria bearing sandy clayey silt (Upper Miocene)	20% Mn micronodules. ( Site 195, Core 2, Cored Interval: 120-129.5 m, page 28 )
20-196	20-196-1-11,140-1	20-196-1-11,140	38.90	In sediment	Mn micronodule	Several	Ash	Silty clayey ash (Quaternary)	10% Mn micronodules. ( Site 196, Core 1, Cored Interval: 37.5-47 m, page 41 )
20-196	20-196-2-2,39-92-1	20-196-2-2,39-92	106.15	In sediment	Mn micronodule	Many	Clay	Stiff, dark brown zeolitic clay of Campanian age is interbedded with a less-abundant reddish yellow, zeolitic clay (Campanian)	20% Mn micronodules. ( Site 196, Core 2, Cored Interval: 104-110 m, page 41 )
20-196	20-196-2-21,106-1	20-196-2-21,106	106.56	In sediment	Mn micronodule	Several	Clay	Stiff, dark brown zeolitic clay of Campanian age is interbedded with a less-abundant reddish yellow, zeolitic clay (Campanian)	10% Mn micronodules. ( Site 196, Core 2, Cored Interval: 104-110 m, page 41 )
20-196	20-196-2-3,92-1	20-196-2-3,92	107.92	In sediment	Mn micronodule	Many	Clay	Manganiferous and phillipsitic clay (Campanian)	30% Mn micronodules. ( Site 196, Core 2, Cored Interval: 104-110 m, page 41 )
20-196	20-196-2-41,115-1	20-196-2-41,115	109.65	In sediment	Mn micronodule	Many	Clay	Zeolitic clay (Campanian)	45% Mn micronodules. ( Site 196, Core 2, Cored Interval: 104-110 m, page 41 )
20-196	20-196-2-5,30-1	20-196-2-5,30	110.30	In sediment	Mn micronodule	Many	Clay	Zeolitic clay (Campanian-Necomian)	50% Mn micronodules. ( Site 196, Core 2, Cored Interval: 104-110 m, page 41 )
20-196	20-196-2-51,120-1	20-196-2-51,120	111.20	In sediment	Mn micronodule	Many	Clay	Phillipsitic clay (Campanian-Necomian)	40% Mn micronodules. ( Site 196, Core 2, Cored Interval: 104-110 m, page 41 )
20-198A	20-198A-1-41,100-1	20-198A-1-41,100	96.00	In sediment	Mn micronodule	Several	Clay	Very stiff, dark brown limonitic zeolitic clay and silty clay with some pale brown palagonitic spots (Upper Cretaceous)	10% Mn micronodules. ( Site 198A, Core 1 Cored Interval: 90.5-100 m, page 58 )
20-198A	20-198A-1-5,6-1	20-198A-1-5,6	96.56	In sediment	Mn micronodule	Several	Clay	Microplancton fragment bearing limonitic clay (Upper Cretaceous)	10% Mn micronodules. ( Site 198A, Core 1 Cored Interval: 90.5-100 m, page 58 )
20-198A	20-198A-2-1,80-1	20-198A-2-1,80	100.80	In sediment	Mn micronodule	Few	Clay	Limonitic clay (Upper Cretaceous)	5% Mn micronodules. ( Site 198A, Core 2 Cored Interval: 100-109.5 m, page 58 )
20-198A	20-198A-3-1,12-1	20-198A-3-1,12	109.76	In sediment	Mn micronodule	Few	Clay	Limonitic clay (Senonian)	5% Mn micronodules. ( Site 198A, Core 3 Cored Interval: 109.5-119 m, page 59 )