THE STONY TABLELAND SOILS OF THE SOUTHEASTERN PORTION OF THE AUSTRALIAN ARID ZONE AND THEIR EVOLUTIONARY HISTORY
| Autor: | R. W. Jessup |
|---|---|
| Rok vydání: | 1960 |
| Předmět: |
Gypsum
Geochemistry Sediment Soil science engineering.material Paleosol Salinity chemistry.chemical_compound Exchangeable sodium chemistry Soil water engineering General Earth and Planetary Sciences Carbonate General Agricultural and Biological Sciences Quaternary Geology General Environmental Science |
| Zdroj: | Journal of Soil Science. 11:188-196 |
| ISSN: | 0022-4588 |
| Popis: | Summary The stony tableland soils which are paleosols of Quaternary age have a clay profile, high proportion of exchangeable sodium, strong salinity, large amounts of stone in the upper few inches of the profile, a surface stone pavement, low carbonate but high gypsum contents and gypsum at shallower depths than carbonate. The surface of the soil layer has a gilgai micro-relief. The soils formed on deposits of wind-blown clays. Underlying the soil layer is a discontinuous layer of wind-deposited gypsite. These wind-blown materials (called lakulangite) were derived from lacustrine sediments; deflation of these sediments led to the formation of wind-excavated hollows that are often of large extent. Stones originally buried beneath the clay deposit have been moved upwards and concentrated on or near the soil surface. |
| Databáze: | OpenAIRE |
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