What is soil and type of SOIL .?

What is soil?  

     Soil is a mixture of mineral particles, organic materials, air, water, and living organisms.

TYPE OF SOIL:-                                                                                                                         There are mainly 3 types of soil.

1. sandy soil:-  (size vary from 0.075 mm to 2 mm)

 It consists of small particles of breaking down of rocks like granite, limestone, and quartz. This is the poorest type of soil for the growth of plants, having low nutrients, acidic and poor water holding capacity. This type of soil good in the drainage system. In this soil Helical piers are used for the construction of buildings.

      

 

 2. Silt soil:-     (size vary from 0.002 mm to 0.075 mm)

soil that has particles smaller than sandy soil and larger than clay is known as silt soil. it's found near the river, lake and other water bodies.it is more fertile than the other type of soil.
This soil is not good for construction purposes.

3. Clay soil:-  (size less than 0.002 mm) 

It has the smallest particles among the others. particles are very close to each other and having good water holding capacity. it feels sticky when wet and smooth when dried.it is also called expensive soil. this causes foundations to crack, shift, and heave.

some different type of soil in India

1.lacustrine soil:-  deposited at the bottom of lakes

2.Alluvial soil:- transportation by running water

3.Aeoline soil:- transportation by wind 

4.Marine soil:- deposited in sea water

5.Peat/Muck soil:- organic soil