22 SUQQ gvespsgesyx2yp2ygu
The rocks may be classified on the basis of their geological formation, physical characteristics
and chemical composition as shown in Fig. 3.1.
p 2Q I g 2 2!f22q
2p
This classification is based upon the mode of the formation. The rock cycle is shown in Fig. 3.2.
On the basis of geological classification, rocks are classified as igneous, sedimentary and
metamorphic.
p 2Q P 2!2g