Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Friedrich, G; Schmitz-Wiechowski, A (1976): Analysis of spherules from Pacific Ocean sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.869435, Supplement to: Friedrich, G; Schmitz-Wiechowski, A (1976): Mikroskopische und mikroanalytische Untersuchungen an metallischen Kügelchen aus Tiefseesedimenten des Zentralen Pazifik. Marine Geology, 20(3), 239-250, https://doi.org/10.1016/0025-3227(76)90118-3

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

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Metallic spherules from Central Pacific Ocean sediments (“Valdivia” expedition VA-05/1, 1973) were studied by means of microscopy and by electron microprobe analysis. The data suggest that most of the spherules are of meteoritic origin, i.e. ablation drops from meteorites as suggested in former studies on spherules from marine environment by Schmidt and Keil (1966), Finkelmann (1970, 1972) and others. The metallic spherules contain up to about 60% Ni, 37% Fe and 3% Co. Unusually high contents of Cr (up to 12%) were noted in some spherules. Some specimen being coated with Fe oxide could be mistaken for manganese micronodules always abundant in the sediments of the Central Pacific Ocean.
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):
NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS)
Coverage:
Latitude: 9.250000 * Longitude: -146.350000
Date/Time Start: 1973-04-01T00:00:00 * Date/Time End: 1973-04-01T00:00:00
Event(s):
VA-05/1_20 (Location 20) * Latitude: 9.250000 * Longitude: -146.350000 * Date/Time: 1973-04-01T00:00:00 * Elevation: -5114.0 m * Location: Pacific Ocean * Campaign: VA-05/1 * Basis: Valdivia (1961) * Method/Device: Dredge (DRG)
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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.
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Friedrich, G; Schmitz-Wiechowski, A (1976): Anotated record of the detailed examination of cosmic spherules retrieved from surface sediments of the Central Pacific Ocean. https://doi.org/10.1594/PANGAEA.869433
  2. Friedrich, G; Schmitz-Wiechowski, A (1976): Chemical composition of cosmic spherules from surface sediments of the Central Pacific Ocean. https://doi.org/10.1594/PANGAEA.869434