claypan


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clay·pan

 (klā′păn′)
n.
1. A layer of hardpan consisting primarily of clay.
2. Australian A shallow depression that contains sediments rich in clay and silt, the surface of which has been hardened and dried by the sun.

claypan

(ˈkleɪˌpæn)
n
(Geological Science) a layer of stiff impervious clay situated just below the surface of the ground, which holds water after heavy rain
References in periodicals archive ?
Nash PR, Motavalli PP, Nelson KA (2012) Nitrous oxide emissions from claypan soils due to nitrogen fertilizer source and tillage/fertilizer placement practices.
Range claypan soil improvement: response from furrowing and ripping in northwestern South Dakota.
Ilewerr also means 'salt crust', such as that found on a claypan.
Echidna Dreaming' based on the original artwork, 'Echidna Dreaming At Tjungaringya,' depicting body paint designs associated with Tingari ceremonies relating to the Tjilkamata (Echidna) Dreaming at the claypan and rockhole site of Tjungaringya, south of Lake Mackay.
alluvium, colluvium, residuum Limestone class No limestone, limestone in combination, limestone Drainage class Very poorly drained to excessively drained Soil taxonomic order Flooding frequency Soil layer restriction type None, fragipan or claypan, bedrock Soil depth (cm) Depth to either the bottom of the soil profile or soil restriction Water holding capacity (cm/cm) PH Base saturation ECEC/sum of bases Fragments (%) Organic matter (%) Clay (%) Sand (%) Elevation (m) Slope (%) 1 + sin (aspect/ 180 *3.
These correlated properties have a significant effect on water and nutrient-holding capacity, drivers of crop yield, and hence can be used for delineating productivity zones for claypan soils (Jaynes et al.
Site-specific evaluation of the CROPGRO-soybean model on Missouri claypan soils.
Lead researcher Kelly Nelson monitored fields of poorly drained claypan soil that was planted with corn after soybean.
Pre-mining soils are largely order Alfisols and Subgroup Typic Fragiudalfs (Miles and Weiss, 1978) including infertile fragipan and claypan soils.
When she arrives at the station, she is overwhelmed by the strangeness of the landscape: the drought-ravaged trees, the claypan, the parrots, and later by the dust storms and the heat, but she decides to stay on the job when she notices Boy's romantic interest in her.
It should be noted that the assemblages at these sites are similar to that described by Veth (1987:105) for claypan sites in the Great Sandy Desert, although gilgais differ from claypans in responding much more quickly to rain.