Chemical weathering-formation of soil, Biology

Assignment Help:

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


Related Discussions:- Chemical weathering-formation of soil

Short-day plants (sdp) - plant responses to light-dark cycle, Short-Day Pla...

Short-Day Plants (SDP) - Plant Responses to Light-Dark Cycles These plants only flower or flower more profusely and rapidly when given less than a certain (critical) number of

Nutrient budgets - nutrient cycles, Nutrient Budgets - Nutrient Cycles ...

Nutrient Budgets - Nutrient Cycles Nutrients are constantly being added and removed by natural and artificial processes. The measure of the input and outflow of nutrients thro

What is lipids, Define lipids 'lipids' defines substances as oils, fats...

Define lipids 'lipids' defines substances as oils, fats and waxes which can be only characterized by a large array of properties.  They are in general: -  coming from plant

Functions of gluconeogenesis, Functions of Gluconeogenesis The signifi...

Functions of Gluconeogenesis The significance of gluconeogenesis include: 1)  During starvation or during periods of  limited  carbohydrate intake, when  the levels of liv

Explain results of abdominal aneurysm surgery, Explain Results of  abdomin...

Explain Results of  abdominal aneurysm surgery? Results:  For ascending aorta replacement, the hospital mortality varies from 0 to 9 per cent. Aortic arch has higher risk of

List a few shortcomings of native starches, List a few shortcomings of nati...

List a few shortcomings of native starches which make it unacceptable in certain food applications. Lack of free-flowing properties of water repellence of the starch granules,

Define fermented dairy products-butter, Normal 0 false false ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Explain the proteus - characteristics of bacteria, Explain the Proteus - Ch...

Explain the Proteus - Characteristics of Bacteria? It is gram negative, non-sporulating rod, which is characterized by rapid motility (peritrichous flagella) and swarming type

Concept of digestion in the stomach, Digestion in the Stomach To unders...

Digestion in the Stomach To understand  the digestion mechanism  in the stomach, it is important to know about the anatomy of the stomach. Look up Unit 6, in the Applied Physio

Benthos - aquatic ecosystem, Benthos - Aquatic Ecosystem The benthos o...

Benthos - Aquatic Ecosystem The benthos or the benthic organisms are those found living in or on the bottom or benthic region of the water mass. They exhibit a variety of adap

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd