Gondwana rocks:
- Gondwana rocks are sedimentary rocks that were formed during the Permian and Triassic periods in the Gondwana supercontinent.
- These rocks are found in various parts of India, including Madhya Pradesh, Chhattisgarh, Maharashtra, and Odisha.
- Gondwana rocks are important for their fossil content, which includes plant fossils, coal, and valuable minerals like iron ore, manganese, and bauxite.
- The coal deposits found in Gondwana rocks are of great economic importance as they are used for power generation and industrial purposes.

Vindhyan rocks:
- Vindhyan rocks are sedimentary rocks that were formed during the Proterozoic era in the Vindhyan basin.
- These rocks are found in the states of Madhya Pradesh, Uttar Pradesh, and Rajasthan.
- Vindhyan rocks are known for their rich mineral resources, including limestone, dolomite, and quartzite.
- Limestone deposits found in Vindhyan rocks are extensively used in the cement industry and for building materials.
- The dolomite reserves found in Vindhyan rocks are used in the production of iron and steel.

Cuddapah rocks:
- Cuddapah rocks are sedimentary rocks that were formed during the Proterozoic era in the Cuddapah basin.
- These rocks are primarily found in the state of Andhra Pradesh.
- Cuddapah rocks are known for their rich mineral resources, including limestone, dolomite, and barytes.
- Limestone deposits found in Cuddapah rocks are used in the cement and steel industries.
- Barytes, which is a major source of barium, is also found in Cuddapah rocks and is used in various industries such as oil and gas drilling, paints, and plastics.

Dharwar rocks:
- Dharwar rocks are ancient metamorphic rocks that were formed during the Archean period in the Dharwar craton.
- These rocks are found in the states of Karnataka, Tamil Nadu, and Andhra Pradesh.
- Dharwar rocks are known for their rich mineral resources, including gold, iron ore, copper, manganese, and chromite.
- The gold deposits found in Dharwar rocks have been mined for centuries and are of significant economic importance.
- Iron ore and manganese deposits found in Dharwar rocks are also important for the iron and steel industry.

Economic importance of Dharwar rocks:
- Dharwar rocks are economically important due to the presence of valuable minerals such as gold, iron ore, copper, manganese, and chromite.
- Gold mining in Dharwar rocks has been a major economic activity for centuries. The Kolar Gold Fields in Karnataka, which are part of the Dharwar rocks, were one of the largest gold mines in the world.
- Iron ore deposits in Dharwar rocks are extensively mined for the production of iron and steel. The Chitradurga and Sandur areas in Karnataka are known for their iron ore reserves.
- Copper deposits in Dharwar rocks are also significant and are used in various industries such as electrical wiring and electronics.
- Manganese and chromite deposits found in Dharwar rocks are important for the production of steel and alloys.
- Overall, the presence of these valuable minerals in Dharwar rocks contributes significantly to