Niino, Hiroshi (1955): Analyses of Manganese nodules off Izu Island. PANGAEA, https://doi.org/10.1594/PANGAEA.859392, Supplement to: Niino, H (1955): On a manganese nodule and Perotrochus beyrichii dredged from the banks near the Izu Islands. Records of Oceanographic works in Japan, 2(2), 120-126, hdl:10013/epic.47489.d001
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Manganese nodules have been found by the author in the shallow waters of the Hyotan-se bank west of Shikime-jima, an island of the Izu archipelago in the Sea of Japan. The slopes around the bank are steep and rocks are exposed; gravels and coarse material cover the broad and flat plain on its top; andesite and basalt, which are very common in the bedrock, are found mingled with liparite gravels together with a number of manganese concretions from the bank.
Source data set:
Latitude: 34.385000 * Longitude: 139.088000
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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 propriatory 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.
Datasets listed in this publication series
- Niino, H (1955): Annotated record of the detailed examination of Mn deposits observed around the Izu Islands during surveys from 1953 until 1955. https://doi.org/10.1594/PANGAEA.859391
- Niino, H (1955): Chemical composition of a manganese nodule from the sea of Japan off Izu Islands. https://doi.org/10.1594/PANGAEA.859267