Question

The northwestern part of the Deccan plateau is made up of __________.
A) Igneous rocks
B) Sedimentary rocks
C) Metamorphic rocks
D) All of the above

Answer 1

Hint: The Deccan Plateau, located in western and southern India, is a huge plateau. It rises to a height of 100 metres in the north and more than 1,000 metres in the south, forming an elevated triangle within the Indian coastline's south-facing triangle. It spans eight Indian states and has a diverse range of habitats, with substantial portions of Telangana, Maharashtra, Karnataka, and Andhra
Pradesh included.

Complete answer:
The plateau is sandwiched between two mountain ranges, the Western and Eastern Ghats, which each rise from a neighbouring coastal plain and virtually meet at India's southernmost point. The Satpura and Vindhya Ranges, which form its northern boundary, separate it from the Gangetic plain to the north.
The Deccan Traps, a vast igneous province, partially covers the Deccan Plateau, a Precambrian shield.

The Deccan Traps, or lava flows or igneous rocks, make up the plateau's northwestern section. The rocks cover the entire state of Maharashtra, making it one of the world's largest volcanic provinces.
It encompasses about 500,000 square kilometres in west-central India and is made up of more than 2,000 metres of flat-lying basalt lava flows. The original area covered by the lava flows has been estimated to be as large as 1,500,000 square kilometres. Basalt is expected to have a volume of 511,000 cubic kilometres. Cotton can be grown in the deep dark soil (known as silt) found here.

The northwestern part of the Deccan plateau is made up of Igneous rock. Therefore the correct answer is ‘A’.

Note: The huge Western Ghats mountain range prevents moisture from the southwest monsoon from reaching the Deccan Plateau, resulting in very little rainfall in the region. The eastern Deccan Plateau, which stretches along India's southeast coast, is at a lower elevation.