Molengraaff, G A F (1922): The amount of water loss was determined by drying at 110°C. PANGAEA, https://doi.org/10.1594/PANGAEA.854688, Supplement to: Molengraaff, GAF (1922): On manganese nodules in Mesozoic deep-sea deposits of Dutch Timor. Proceedings of the Royal Academy of Amsterdam, Section of Sciences; https://archive.org/details/proceedingsofsec232koni, 23(6), 997-1012, hdl:10013/epic.46198.d001
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Deep-sea deposits, which resemble in nearly every respect the deep-sea oozes have been observed in many islands of the East-Indian Archipelago, notably the islands of Borneo, Rotti and Timor. Manganese nodules are found in equivalents of deeep-sea red clays on Timor and Rotti island. In this paper, those relative to red clay deposits dating from a Cretaceous ocean are analysed in detail in the vicinity of the town of Niki Niki in Western Timor.
Source data set:
Molengraaff (1922) Fig. 1 Broken manganese nodule of Noil Tobee, clearly showing concentric arrangement
Molengraaff (1922) Fig. 2 Broken manganese nodule of Noil Tobee, clearly showing concentric arrangement
Molengraaff (1922) Fig. 4 Nodule of manganese with a mamillated surface which appears like shagreen due to numerous little rugosities
Latitude: -9.767176 * Longitude: 124.531159
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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
- Molengraaff, GAF (1922): Description of ferromanganese concretions from the Niki Niki area in Western Timor. https://doi.org/10.1594/PANGAEA.854686
- Molengraaff, GAF (1922): (Table, page 1007), Composition of a fossil manganese nodule from Western Timor. https://doi.org/10.1594/PANGAEA.854687