The rock cycle is a basic concept in geology that describes transitions through geologic time among the three main rock types: sedimentary, metamorphic, and igneous.
Each rock type is altered when it is forced out of its equilibrium conditions.
Rocks are using for making bricks, fire places and kitchen counter of our homes, dams, buildings, railway ballast, pavement material, road metal, concrete aggregates etc.
Rocks are extremely important in terms of their stability and strength as a geological material on which construction foundation is made.
Blocks of stones are generally used in the construction of foundation, walls, Bridge, piers abutments, lighthouses and aqueducts etc.
Rocks are used in the construction of masonry work, lintels and columns etc.
Rocks are also used in the construction of retaining walls in the hilly areas.
Broken or crushed rocks are widely used as ballast in the construction of railway tracks.
Rocks are also used in the construction of slabs which are used for paving or roofing.
Nowadays stone screenings are also used as a substitute for the sand.
Rocks in the crushed form used as aggregate in concrete.