Markov, Yu D; Mozherovsky, A V; Derkachev, A N; Barinov, N N; Sereda, N A (2002): Chemical composition of layer silicates from the Sado Ridge, Sea of Japan [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.785132, Supplement to: Markov, YD et al. (2002): High-Fe layer silicates of the Sado Ridge, Japan Sea. Lithology and Mineral Resources, 37(2), 121-129, https://doi.org/10.1023/A:1014868332041
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Abstract:
Detailed mineralogical investigations of high-Fe layer silicates from loose sediments (glauconite sands) of the Sado Ridge revealed that green aggregates found on submarine rises of the Japan Sea floor have different genesis. It was demonstrated that round dark green grains approximate micas in composition. Primary volcanic rocks presumably have undergone extensive secondary alterations and then were disintegrated. Their disintegration products (protoceladonite) filling pores were redeposited and buried in sediments for a long time. Angular green grains mainly represented by smectite also formed at lower temperatures during disintegration of altered volcanosedimentary rocks. These younger grains had no prolonged exposure. Pseudomorphs of siliceous microplankton consist of both hydromica and smectites. They are presumably authigenic products formed with participation of microorganisms or electrostatic processes (spherical shape), or their combination. The formation mechanism of minerals filling cavities in pyroclastics is not entirely clear.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 39.125667 * Median Longitude: 138.667333 * South-bound Latitude: 38.836000 * West-bound Longitude: 138.526000 * North-bound Latitude: 39.488000 * East-bound Longitude: 138.929000
Event(s):
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 | Sample code/label | Sample label | Markov, Yu D | |||
| 5 | Sample type | Samp type | Markov, Yu D | |||
| 6 | Silicon dioxide | SiO2 | % | Markov, Yu D | Wet chemistry | |
| 7 | Aluminium oxide | Al2O3 | % | Markov, Yu D | Wet chemistry | |
| 8 | Iron oxide, Fe2O3 | Fe2O3 | % | Markov, Yu D | Wet chemistry | |
| 9 | Titanium dioxide | TiO2 | % | Markov, Yu D | Wet chemistry | |
| 10 | Manganese oxide | MnO | % | Markov, Yu D | Wet chemistry | |
| 11 | Magnesium oxide | MgO | % | Markov, Yu D | Wet chemistry | |
| 12 | Calcium oxide | CaO | % | Markov, Yu D | Wet chemistry | |
| 13 | Sodium oxide | Na2O | % | Markov, Yu D | Wet chemistry | |
| 14 | Potassium oxide | K2O | % | Markov, Yu D | Wet chemistry | |
| 15 | Phosphorus pentoxide | P2O5 | % | Markov, Yu D | Wet chemistry | |
| 16 | Water in rock | H2O | % | Markov, Yu D |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
52 data points