Shkol'nik, E L; Baturin, Gleb N; Zhegallo, E A; Zalishchak, B L; Basov, Ivan A (2006): (Table 1) Chemical analyses of rock samples from low atolls of the Western Indian Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.726463, In supplement to: Shkol'nik, EL et al. (2006): Quaternary phosphatized limestones with initial Fe-Mn mineralization from the Kammu Seamount (Milwaukee Seamounts, Northern Pacific). Oceanology, 46(1), 95-104, https://doi.org/10.1134/S0001437006010115
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Abstract:
Compositions, structures, and microstructures of different types of phosphorites and poorly phosphatized rocks from low atolls in the near-equatorial part of the Western Indian Ocean are described. The rocks were examined under optical and scanning microscopes using microprobe techniques and etching of selected samples with weak solvents as well as with the help of chemical analyses. It is proved that phosphorites have been formed owing to the uneven phosphatization of primary carbonate rocks; degree of their phosphatization ranges from traces to 40% P2O5. In the phosphorites numerous organic remains were encountered; they included fragments of plankton, debris of tortoise shells, and coccoidal and filamentous bacteria-like formations. It is suggested that the phosphorites formed due to high local biological productivity over the outer edges of coral reefs and are not related to guano accumulation or to endoupwelling.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: -8.216667 * Median Longitude: 49.711111 * South-bound Latitude: -10.100000 * West-bound Longitude: 47.516667 * North-bound Latitude: -4.866667 * East-bound Longitude: 53.866667
Minimum Elevation: 1.0 m * Maximum Elevation: 2.0 m
Event(s):
AfI * Latitude: -4.866667 * Longitude: 53.866667 * Elevation: 1.0 m * Location: Ben African Island * Campaign: AP13 * Basis: Akademik Petrovsky * Method/Device: Hammer (HAM)
AI * Latitude: -10.100000 * Longitude: 47.750000 * Elevation: 2.0 m * Location: Astov Island * Campaign: AP13 * Basis: Akademik Petrovsky * Method/Device: Hammer (HAM)
CI * Latitude: -9.683333 * Longitude: 47.516667 * Elevation: 1.0 m * Location: Cosmoledo Island * Campaign: AP13 * Basis: Akademik Petrovsky * Method/Device: Hammer (HAM)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | Area/locality | Area | Shkol'nik, E L | |||
| 6 | Sample code/label | Sample label | Shkol'nik, E L | |||
| 7 | Phosphorus pentoxide | P2O5 | % | Shkol'nik, E L | Wet chemistry | |
| 8 | Calcium oxide | CaO | % | Shkol'nik, E L | Wet chemistry | |
| 9 | Magnesium oxide | MgO | % | Shkol'nik, E L | Wet chemistry | |
| 10 | Sodium oxide | Na2O | % | Shkol'nik, E L | Wet chemistry | |
| 11 | Potassium oxide | K2O | % | Shkol'nik, E L | Wet chemistry | |
| 12 | Silicon dioxide | SiO2 | % | Shkol'nik, E L | Wet chemistry | |
| 13 | Aluminium oxide | Al2O3 | % | Shkol'nik, E L | Wet chemistry | |
| 14 | Manganese oxide | MnO | % | Shkol'nik, E L | Wet chemistry | |
| 15 | Titanium dioxide | TiO2 | % | Shkol'nik, E L | Wet chemistry | |
| 16 | Iron oxide, Fe2O3 | Fe2O3 | % | Shkol'nik, E L | Wet chemistry | |
| 17 | Carbon dioxide | CO2 | % | Shkol'nik, E L | Wet chemistry | |
| 18 | Fluorine | F | % | Shkol'nik, E L | Wet chemistry | |
| 19 | Sulfite | [SO3]2- | % | Shkol'nik, E L | Wet chemistry | |
| 20 | Loss on ignition | LOI | % | Shkol'nik, E L | Loss of ignition analysis | |
| 21 | Carbon, organic, total | TOC | % | Shkol'nik, E L | Wet chemistry |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
184 data points