Ch 2Structure and Physiography — Class 11 Geography, concept-first.

The story of the Indian subcontinent begins long before the maps we know today. The earth itself is roughly 4600 million years old, and every mountain range, plateau, and plain we see is the product o…

The Peninsular Block is the oldest and most stable part of India, a vast tableland built of ancient rocks that has remained largely unchanged for hundreds of millions of years.

The Himalayas, geologically young and tectonically active, form the northernmost boundary of India, stretching in a continuous arc from the Indus to the Brahmaputra.

The Indo-Ganga-Brahmaputra Plain is the third major physiographic division of India, and it is also the largest alluvial expanse in the world.

Physiography is the study of the physical features of the Earth's surface, and in this section we examine how India's landforms are not random but the product of its long geological history.

The Himalayas are far more than a mountain chain — they are a complete divide. This section introduces the North and Northeastern Mountains of India, which include the Himalayas and the hills of the N…

The Northern Plains are the product of millions of years of sediment deposition. The Indus, the Ganga and the Brahmaputra, along with their tributaries, carried vast quantities of alluvium down from t…

The Peninsular Plateau is the oldest and most stable landmass of India, rising from about 150 m above the river plains to an elevation of 600–900 m.

The Deccan Plateau is one of the oldest and most stable landmasses in India, a vast triangular tableland that forms the core of the southern peninsula.

The Central Highlands form the northern and larger division of the Peninsular Plateau. They lie to the north of the Narmada river, which separates them from the Deccan Plateau to the south.

The northeastern corner of the peninsula is not a separate landmass but a detached piece of the main Peninsular Plateau, pushed away by the same forces that built the Himalayas.

To the northwest of the Aravali hills lies the Great Indian desert, a region defined by its extreme aridity.

India’s coastline is long, but it is not uniform. Depending on where the coast lies and the geomorphic processes that shaped it, the coastal plains split into two broad belts: the western coastal plai…

India has two major island groups, and they sit in two different seas. One group lies in the Bay of Bengal, the other in the Arabian Sea.