Lesovaya, SN; Goryachkin, Sergey V; Polekhovskii, Yu S (2012): Soil chemistry and particle size distribution of mountainous tundra soils in the Rai-Iz Massif [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.815783, Supplement to: Lesovaya, SN et al. (2012): Soil formation and weathering on ultramafic rocks in the mountainous tundra of the Rai-Iz massif, Polar Urals. Eurasian Soil Science, 45(1), 33-44, https://doi.org/10.1134/S1064229312010097
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Abstract:
Gravelly clay loamy and clayey soils developed from the derivatives of ultramafic rocks of the dunite-harzburgite complex of the Rai-Iz massif in the Polar Urals have been studied. They are represented by raw-humus pelozems (weakly developed clayey soils) under conditions of perfect drainage on steep slopes and by the gleyzems (Gleysols) with vivid gley color patterns in the eluvial positions on leveled elements of the relief. The magnesium released from the silicates with the high content of this element (mainly from olivine) specifies the neutral-alkaline reaction in these soils. Cryoturbation, the accumulation of raw humus, the impregnation of the soil mass with humic substances, gleyzation, and the ferrugination of the gleyed horizons are also clearly pronounced in the studied soils. Despite the high pH values, the destruction of supergene smectites in the upper horizons and ferrugination (the accumulation of iron hydroxides) in the microfissures dissecting the grains of olivine, pyroxene, and serpentine, and in decomposing plant tissues take place. The development of these processes may be related to the local acidification (neutralization) of the soil medium under the impact of biota and carbonic acids. The specificity of gleyzation in the soils developing from ultra-mafic rocks is shown in the absence of iron depletion from the fine earth material against the background of the greenish blue gley color pattern.
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Coverage:
Median Latitude: 66.858860 * Median Longitude: 65.504085 * South-bound Latitude: 66.850140 * West-bound Longitude: 65.326000 * North-bound Latitude: 66.867580 * East-bound Longitude: 65.682170
Date/Time Start: 2007-07-01T00:00:00 * Date/Time End: 2007-07-01T00:00:00
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
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Datasets listed in this publication series
- Lesovaya, SN; Goryachkin, SV; Polekhovskii, YS (2012): (Table 4) Forms of iron, aluminum, and silicon in mountainous tundra soils from the Rai-Iz Massif. https://doi.org/10.1594/PANGAEA.815782
- Lesovaya, SN; Goryachkin, SV; Polekhovskii, YS (2012): (Table 1) Major element oxides in mountainous tundra soils from the Rai-Iz Massif. https://doi.org/10.1594/PANGAEA.815779
- Lesovaya, SN; Goryachkin, SV; Polekhovskii, YS (2012): (Table 3) Particle size distribution of mountainous tundra soils from the Rai-Iz Massif. https://doi.org/10.1594/PANGAEA.815781
- Lesovaya, SN; Goryachkin, SV; Polekhovskii, YS (2012): (Table 2) Physicochemical properties of mountainous tundra soils from the Rai-Iz Massif. https://doi.org/10.1594/PANGAEA.815780