Baturin, Gleb N; Savenko, Alexandra V (2002): Chemical composition and solubility of ocean phosphatized rocks in seawater [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.762408, Supplement to: Baturin, GN; Savenko, AV (2002): The problem of limestone phosphatization in light of experimental investigation. Translated from Okeanologiya, 2002, 42(2), 210-217, Oceanology, 42(2), 197-205
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Abstract:
In order to elucidate possibility of limestone phosphatization during contact with seawater two sets of experiments were carried out: that of solubility of natural phosphates in seawater and that of deposition of phosphorus onto calcareous phase. Concentration of phosphorus in seawater used for solubility experiments varied from 39 to 338 µ/l, temperature was 5.5-17.5°C and pH 7.8-7.9. The lowest solubility was characteristic of ancient crystallized samples. The deposition experiments showed that in case when concentration of dissolved phosphate in seawater reaches 3 mg/l it might be sorbed on solid CaCO3 phase without forming its own mineral. The latter is able to form rapidly but only if magnesium is not present in solution. In magnesium-free water calcium phosphates precipitate when concentration of dissolved phosphorus is higher than 0.9-1.2 mg/l. These results show that phosphatization of limestones in marine environment takes place during their contact with pore water but not with marine bottom water.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 25.882333 * Median Longitude: -143.258333 * South-bound Latitude: 12.183333 * West-bound Longitude: 172.850000 * North-bound Latitude: 32.266667 * East-bound Longitude: -9.800000
Event(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Baturin, GN; Savenko, AV (2002): (Table 1) Chemical composition of phosphatized rocks from the ocean floor. https://doi.org/10.1594/PANGAEA.762405
- Baturin, GN; Savenko, AV (2002): (Table 2) Solubility of ocean phosphatized rocks in seawater. https://doi.org/10.1594/PANGAEA.762407