What is a lateritic soil profile?

What is a lateritic soil profile?

Lateritic soils are rich in iron and aluminum, low in silica, chemically acidic, and exhibit a soil profile different from that of other soils. Organic material has been leached out of horizon A; the silica bases are leached away and the layer is depleted of potassium, calcium and phosphorous.

Who discovered laterite soil?

1.1 Historical Background Laterites were first described by Buchanan (1807) in southern India.

How do you identify laterite soil?

Laterite is both a soil and a rock type rich in iron and aluminium and is commonly considered to have formed in hot and wet tropical areas. Nearly all laterites are of rusty-red coloration, because of high iron oxide content.

What are laterites and bauxites?

Laterites and lateritic bauxites are materials with more. than 20 percent total iron, usually all ferric. These are both. considerable enrichments above alumina (15.9%) and total. iron (6.57%) of average igneous rock (Garrels and MacKen-

How are lateritic soils formed?

The laterite soil is formed under conditions of high temperature and heavy rainfall with alternate wet and dry periods, which leads to leaching of soil, leaving only oxides of iron and aluminum. It lacks fertility due to a lower base-exchanging capacity and a lower content of nitrogen, phosphorus, and potassium.

What is the difference between laterite and lateritic soil?

Lateritic soils may contain clay minerals; but they tend to be silica-poor, for silica is leached out by waters passing through the soil. Typical laterite is porous and claylike. It contains the iron oxide minerals goethite, HFeO2; lepidocrocite, FeO(OH); and hematite, Fe2O3.

How are lateritic rocks formed?

Laterites are formed by the decomposition of different kind of rocks, under conditions yielding aluminum and iron hydroxides. The different theories of origin are discussed, as well as the chemical process of laterization, and the geographic distribution of this peculiar type of clay.

How are laterites formed?

How lateritic soils are formed?

Which minerals are found in lateritic rocks?

It is a clay-like substance that is pinkish, whitish, or reddish depending upon the iron content present in it. The total reserves of bauxite in India are about 3896 million tonnes (as of 2016-17)….Detailed Solution.

What is lateralization of soil?

Laterization is a prolonged process of chemical weathering of rocks leading to the formation of soil. It produces a variation in the thickness, grade, chemistry and ore mineralogy of the rock creating soil particles. Thus the correct answer is option C.