A wide variety of geological formations occur in our state. In fact, the variety is so vast that all kinds of rocks from the oldest Archaen to the recent Alluvium are found in our state. India is a peninsular country is well known and a major portion of this peninsular shield lies in our state. Geological formations ranging from the oldest Archaens to the recent formations are found in this shield. Table 2.1.1 gives the distribution of stratigraphic units in different districts of our state.