Laterite ( non-carbonate red color ) is a surface formation rich in iron and aluminum in hot and humid tropical regions, formed as a result of weathering of rocks.
| Laterite | |
|---|---|
 Sedimentary rocks | |
| Group | Sedimentary rocks |
| Physical properties | |
| Colour | Red orange |
Content
Rocks
Rocks decompose by precipitation, temperature changes, as a result of chemical and mechanical influences. Leaking water destroys the main minerals of rocks, reducing the concentration of readily soluble compounds of sodium , potassium , magnesium and silicon , and increasing the concentration of sparingly soluble compounds of iron and aluminum .
Laterite consists mainly of kaolinite , goethite , hematite and gibbsite , which are formed during the weathering process. In addition, many laterites contain quartz , a relatively stable relict mineral. The iron oxides of goethites and hematites give the laterites a characteristic red-brown color.
Soil
Laterite is a type of red-colored tropical soil [1] .
Laterites serve as the basis for the formation of red earth in the tropics [2] .
Notes
- ↑ Gerasimov I.P., Romashkevich A.I. Genetic profile of modern laterite: (based on research in Guinea) // Genesis and soil geography of foreign countries according to research by Soviet geographers: Collection of scientific articles dedicated to the 8th International Congress of Soil Science in Bucharest (1964). M., 1964.S. 9-24.
- ↑ Comments // Five Continents / N. I. Vavilov . Under the tropics of Asia / A.N. Krasnov . - M .: Thought , 1987. - S. 340. - 348 p.
Literature
- Gerasimov I.P. Modern laterites and their formation // Laterites. M .: Nauka, 1964.S. 5-16. (International Geological Congress. 22 session. Reports of Soviet geologists; Problem 14).