The stratigraphic situation of peninsular India

The stratigraphy of Peninsular India is complex and varied, with a long and varied geologic history. The rocks in Peninsular India are divided into three main groups: the Archaean, Proterozoic, and Phanerozoic.

The Archaean rocks form the oldest and most extensive group and form the foundation for much of Peninsular India. They are made up of granites, gneisses, schists, and other metamorphic rocks that were formed more than 2.5 billion years ago.

The Proterozoic rocks form the next group and are slightly younger than the Archaean rocks. They are primarily made up of sandstones, shales, and limestones that were deposited between 2.5 billion and 542 million years ago.

The Phanerozoic rocks are the youngest group and include sedimentary rocks that were deposited during the last 542 million years. They include sandstones, shales, limestones, and other rocks that were formed during the Paleozoic, Mesozoic, and Cenozoic eras. The Deccan Traps, a large volcanic province that covers much of Peninsular India, also belongs to Phanerozoic.

Overall, the stratigraphy of Peninsular India is characterized by a complex mixture of different rock types and ages, reflecting the varied geologic processes that have shaped the region over billions of years.