Natland, James H (1976): Annotated record of the detailed examination of Mn deposits from the 7TOW cruise among the Line Islands Guyots in the Pacific Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.869809, Supplement to: Natland, JH (1976): Petrology of Volcanic Rocks Dredged from Seamounts in the Line Islands. In: Schlanger, S.O.; Jackson, E.D.; et al., Initial Reports of the Deep Sea Drilling Project, U.S. Government Printing Office, XXXIII, 749-777, https://doi.org/10.2973/dsdp.proc.33.126.1976
Always quote citation above when using data! You can download the citation in several formats below.
Published: 1976 (exact date unknown) • DOI registered: 2017-01-20
Abstract:
Volcanic rocks dredged from the tops of seamounts in the Line Islands and cored from their flanks demonstrate that this is a region of extreme petrologic diversity. Tholeiitic and alkalic basalts were obtained in a single dredge haul and a wide spectrum of alkalic differentiates, including quartz trachytes, and phonolites were dredged or cored elsewhere. Four dredge stations on widely scattered seamounts recovered potassic nephelinites, unlike any other volcanic rocks heretofore found in the ocean basins. These rocks include amphibole and biotite-bearing varieties, some of which are leucite normative.
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)
Coverage:
Latitude: 9.333000 * Longitude: -163.167000
Date/Time Start: 1970-06-16T00:00:00 * Date/Time End: 1970-06-16T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
7TOW-129D (7TOW06WT-129D) * Latitude: 9.333000 * Longitude: -163.167000 * Date/Time: 1970-06-16T00:00:00 * Elevation: -1563.0 m * Location: Pacific Ocean * Campaign: 7TOW_6 (7TOW06WT) * Basis: Thomas Washington * Method/Device: Dredge (DRG) * Comment: Instiute: SIO
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 2 | Identification | ID | ||||
| 3 | Position | Position | Visual description | |||
| 4 | Deposit type | Deposit type | ||||
| 5 | Quantity of deposit | Quantity | ||||
| 6 | Size | Size | ||||
| 7 | Substrate type | Substrate | ||||
| 8 | Description | Description | ||||
| 9 | File name | File name | ||||
| 10 | Uniform resource locator/link to image | URL image |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
26 data points
Data
| 1 Depth sed [m] | 2 ID | 3 Position | 4 Deposit type | 5 Quantity | 6 Size | 7 Substrate | 8 Description | 9 File name | 10 URL image |
|---|---|---|---|---|---|---|---|---|---|
| 0 | 7TOW-129D-2-N3 | Surface | Mn crust | 1 | Thick | Boulder; altered basalt | Composite boulder of reddish-orange palagonitic hyaloclastite, interlayered cream-colored phosphorite with a thick carapace of ferromanganese oxides. | Fig3_Natland_1975.jpg | https://hdl.handle.net/10013/epic.49446.d001 |
| 0 | 7TOW-129D-2-N4 | Surface | Mn crust | 2 | Boulder; altered basalt | Hyaloclastite breccia boulders, one with ferromanganese oxide crust broken away, the other as it arrived on deck, completely encased in black ferromanganese oxides. | Fig4_Natland_1975.jpg | https://hdl.handle.net/10013/epic.49446.d002 | |
| 0 | 7TOW-129D-2-N5 | Surface | Mn crust | 2 | Thick | Boulder, cobble; altered basalt, phosphorite | Hyaloclastite-phosphorite mixed boulders. Top is indicated by the thicker ferromanganese crust above the breccia layer. The cobble on the left was completely encased in ferromanganese oxides before it was broken on deck. | Fig5_Natland_1975.jpg | https://hdl.handle.net/10013/epic.49446.d003 |