Chemical weathering-formation of soil, Biology

Chemical Weathering

The rocks while getting disintegrated may also undergo chemical change. Water is an important agent in bringing about chemical changes due to dissolution or reaction of one or more components of rock materials. Presence of dissolved materials and warm temperature favour chemical weathering. Some components of the rock may get dissolved and reprecipitated. Some minerals like feldspar and mica readily combine with water through the process of hydration and become soft and easily weatherable. Another very important process of chemical weathering is through hydrolysis in which water dissociates (particularly in the presence of carbon dioxide and organic acids) into H+ and OH-ions which act on silicates like orthoclase to produce silicate clays. Oxidation and reduction reactions and carbonation are other important means of chemical weathering. It is important to realise that weathering of rocks is a continuous phenomenon, that helps in soil formation. It is, however, a very slow process, and may take hundreds or thousands of years to make a few centimetres of soil, depending on-the nature of the parent rock material

Posted Date: 12/11/2012 1:24:15 AM | Location : United States







Related Discussions:- Chemical weathering-formation of soil, Assignment Help, Ask Question on Chemical weathering-formation of soil, Get Answer, Expert's Help, Chemical weathering-formation of soil Discussions

Write discussion on Chemical weathering-formation of soil
Your posts are moderated
Related Questions
The adaptive mechanisms may be short term ones which come into play within minutes or hours of the onset of myocardial dysfunction. These are: Frank-Starling Mechanism In

Q. What are the catalysts? Catalysts are substances that decrease the activation energy of a chemical reaction, facilitating it or making it energetically viable. The catalyst

Let us learn about the factors that affect metabolism: 1) More energy is required when muscular work is carried out. 2) The larger the surface area of the body, more heat is

In detail describe the structure and function of the heart and blood flow. Include the conduction system and blood vessels. Make your response specific to your audience who are a g

i want to know the contents which i should write in my assignment..related to the above topic..

how do carnivorous feed

Which of the following is true for the epithelial cells of the kidney proximal tubule? A. The sodium-glucose co-transporter in the luminal membrane is responsible for the net f

PHYLUM  CNIDARIA (= COELENTERATA )         Definition and Introduction Tissue  grade eumetazoans with  a radial  symmetry .The  term  coelenterate  signifies the  presence


Explain What is the optimum temperature for catalyses? Ans) For any chemical reaction, the reaction rate enhances with temperature, so the higher the temperature, the earlier t