Nayudu, Y Rammohanroy (1964): (Plate 3) Manganese nodules and deep-sea sediment core from Pacific Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.856785, Supplement to: Nayudu, YR (1964): Palagonite tuffs (hyaloclastites) and the products of post-eruptive processes. Bulletin of Volcanology, 27(1), 391-410, https://doi.org/10.1007/BF02597539
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Abstract:
A synoptic review of the studies of well-known occurrences of palagonite tuffs is presented. Included are palagonite tuffs from Iceland, and pillow-lava palagonite complexes from Columbia River basalts and from the central Oregon coast. Additional petrologic and x-ray defraction data for selected samples are presented. Petrologic evidence shows that basaltic glass of aqueous tuffs and breccias consists of sideromelane, which is susceptible to palagonitization. It is shown that palagonitization is a selective alteration process, involving hydration, oxidation and zeolitization. Some of the manganese nodules dredged from the Pacific Ocean floor contain nucleus of palagonite-tuff breccias or of zeolite. A brief megascopic and microscopic description of nodules from the south Pacific, the Mendocino ridge and the 'Horizon' Nodule from the north Pacific is presented. Petrographic studies of palagonite-tuff breccias of manganese nodules and other palagonites suggest that migration and segregation of metallic elements occur during and subsequent to palagonitization. During the palagonitization of sideromelane, nearly 30 percent of sea water is absorbed. The hydration of sideromelane is also accompanied by oxidation of iron and other elements. These oxides may be released either in colloidal form or in true solution and tend to precipitate first from the unstable palagonite.
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: 22.562833 * Median Longitude: -131.608258 * South-bound Latitude: -25.517000 * West-bound Longitude: -157.300000 * North-bound Latitude: 40.383333 * East-bound Longitude: -85.233000
Date/Time Start: 1951-09-10T00:00:00 * Date/Time End: 1959-07-22T00:00:00
Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 0.27 m
Event(s):
CHNK-2G (CHIN0ABD-002G) * Latitude: 35.150000 * Longitude: -157.300000 * Date/Time: 1956-07-12T00:00:00 * Elevation: -5811.0 m * Recovery: 0.72 m * Location: Pacific Ocean * Campaign: CHINOOK (CHIN02BD) * Basis: Spencer F. Baird * Method/Device: Gravity corer (GC) * Comment: Institute: SIO
DWHD72 * Latitude: -25.517000 * Longitude: -85.233000 * Date/Time: 1958-01-26T00:00:00 * Elevation: -920.0 m * Location: Pacific Ocean * Campaign: DOWNWIND-H * Basis: Horizon * Method/Device: Dredge (DRG)
FANBD-25D * Latitude: 40.383333 * Longitude: -127.983333 * Date/Time: 1959-07-22T00:00:00 * Elevation: -1260.0 m * Location: Pacific Ocean * Campaign: FANFARE-B (FANB01BD) * Basis: Spencer F. Baird * Method/Device: Dredge, chain bag (DRG_C)
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 | Nayudu, Y Rammohanroy | |||
| 2 | Date/Time of event | Date/Time | Nayudu, Y Rammohanroy | |||
| 3 | Latitude of event | Latitude | Nayudu, Y Rammohanroy | |||
| 4 | Longitude of event | Longitude | Nayudu, Y Rammohanroy | |||
| 5 | Elevation of event | Elevation | m | Nayudu, Y Rammohanroy | ||
| 6 | Sample ID | Sample ID | Nayudu, Y Rammohanroy | |||
| 7 | DEPTH, sediment/rock | Depth sed | m | Nayudu, Y Rammohanroy | Geocode | |
| 8 | Sample code/label | Sample label | Nayudu, Y Rammohanroy | in text | ||
| 9 | Description | Description | Nayudu, Y Rammohanroy | |||
| 10 | Uniform resource locator/link to image | URL image | Nayudu, Y Rammohanroy |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
16 data points