The general relief is the oldest in the Peninsular plateau.

The Peninsular plateau, also known as the Peninsular India Plateau, is a large region in southern India that is characterized by its flat or gently rolling terrain. It is bounded by the Western Ghats in the west, the Eastern Ghats in the east, and the Vindhya and Satpura ranges in the north. The general relief refers to the overall topography or landscape of the region.

Now let's discuss why the general relief in the Peninsular plateau is considered the oldest.

1. Geological Formation:
The Peninsular plateau is predominantly made up of ancient rocks that were formed during the Precambrian era, which dates back more than 4 billion years. These rocks are among the oldest in the world and have been subjected to various geological processes over millions of years.

2. Tectonic Activity:
The Peninsular plateau is relatively stable and has not experienced significant tectonic activity in recent times. It is believed that the region underwent major tectonic events during the Archean and Proterozoic eras, which contributed to the formation of the general relief we see today.

3. Erosion and Weathering:
Over millions of years, the Peninsular plateau has been subjected to extensive erosion and weathering processes. The action of rivers, wind, and other natural forces has gradually shaped the landscape, resulting in the general relief we observe.

4. Age of Mountain Ranges:
The Western Ghats and the Eastern Ghats, which surround the Peninsular plateau, are relatively younger mountain ranges compared to the general relief. These ranges were formed as a result of tectonic activity during the Cretaceous and Paleogene periods, which occurred much later than the formation of the general relief.

In conclusion, the general relief in the Peninsular plateau is considered the oldest because it is predominantly composed of ancient rocks that were formed during the Precambrian era. The region has not experienced significant tectonic activity in recent times, and the landscape has been shaped by extensive erosion and weathering over millions of years.