Audley-Charles, M G (1965): Analysis of ferromanganiferous sedimentary rocks from Timor [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.854775, Supplement to: Audley-Charles, MG (1965): A geochemical study of Cretaceous ferromanganiferous sedimentary rocks from Timor. Geochimica et Cosmochimica Acta, 29(11), 1153-1173, https://doi.org/10.1016/0016-7037(65)90067-0
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Abstract:
Seven manganese nodules, eight ferromanganiferous shales from the Cretaceous Wai Bua Formation of Timor, and a pelagic limestone with four ferromanganese enriched layers from the Middle Eocene of Timor have been analysed. The nodules are compared with modern deep-sea nodules, and the ferromanganiferous shales are contrasted with relatively shallow marine manganiferous shales. The conclusion is reached that these rocks from Timor were probably deposited in a bathypelagic environment. There is a total absence of any indication that volcanic material has contributed to these deposits. The chemical composition of the ferromanganiferous rocks are discussed and some indications of biogenic influences are noted. The Middle Eocene pelagic limestone is compared with a similar modern sediment described from the Easter Island Rise in the Pacific.
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: -9.296213 * Median Longitude: 125.417909 * South-bound Latitude: -9.767176 * West-bound Longitude: 124.531159 * North-bound Latitude: -9.139225 * East-bound Longitude: 125.713493
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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)
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2 datasets
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Datasets listed in this publication series
- Audley-Charles, MG (1965): (Table 1, page 1156-1157), Composition of a fossil manganese nodules from Eastern and Western Timor. https://doi.org/10.1594/PANGAEA.854690
- Audley-Charles, MG (1965): Description of ferromanganese concretions from the Wai Bua formation in Eastern Timor. https://doi.org/10.1594/PANGAEA.854774