Q. Consider the following statements regarding the Dharwar Rock System:
1. It is the first metamorphic sedimentary rocks in India.
2. They were first studied in Dharwar region of Karnataka.
Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C
Notes:

Dharwar system is later than the Archean system but older than the other systems.  

  • The Dharwar period of rock formation has been largely fixed from 2500 million years ago to 1800 million years ago. 
  • Dharwar Rock System is special because it is the first metamorphic sedimentary rocks in India. 
  • They are named Dharwar system because they were first studied in Dharwar region of Karnataka.  
  • But they are also found in Aravallis, Tamil Nadu, Chota-nagpur plateau, Meghalaya, Delhi, and the Himalayas region. 
  • The Dharwar rocks are rich in iron ore, manganese, lead, zinc, gold, silver etc. 

Source: NCERT – XI Fundamentals of Physical Geography