Loading module…

What you will learn in Indian Physical Geography and the Monsoon

1. A continent in transit
India from 140 million years ago, still in Gondwana, to today, on two published reconstructions. Read its speed relative to Eurasia stage by stage and find the fastest — and the stop.
2. The Deccan
A line of dated volcanic rock from the Deccan Traps to Réunion. Follow India north off the plume, measure how far from it the Deccan really was, and stop at the K–Pg boundary — an open question, not a verdict.
3. Building the Himalaya
Run the collision forward: the crust thickens and three thrust faults form, each south of the last. Then count the slip the front has stored since its last great earthquakes, and find the seismic gap.
4. The physiographic divisions
Six divisions on a relief globe, each drawn by a stated rule from real heights: the Himalaya, the Northern Plains, the Indian Desert, the Peninsular Plateau, the Coastal Plains and the Islands. Then a cross-section that shows the mountain made the plain.
5. Rivers
Himalayan against Peninsular rivers: modelled hydrographs from measured rain and temperature, with the snow and the ground storage as switches. Find what really keeps a Himalayan river running in April, and which rivers are older than the mountains.
6. The monsoon
Test the giant-sea-breeze explanation against the rain that falls, find it too weak and too early, and build the monsoon from five measured parts. Then the onset across six weeks, the rain shadows, the Thar, and a season with plenty of rain that still fails a crop.
7. Soils and hazards
Six soils placed by their causes, black soil on the Deccan basalt, and the hazard geography: the earthquakes of the Himalayan arc under a seismic code revised in 2025, the Bay of Bengal's cyclones, the flood basins and the dry interior.

What you will learn in Indian Physical Geography and the Monsoon

1. A continent in transit

India from 140 million years ago, still in Gondwana, to today, on two published reconstructions. Read its speed relative to Eurasia stage by stage and find the fastest — and the stop.

2. The Deccan

A line of dated volcanic rock from the Deccan Traps to Réunion. Follow India north off the plume, measure how far from it the Deccan really was, and stop at the K–Pg boundary — an open question, not a verdict.

3. Building the Himalaya

Run the collision forward: the crust thickens and three thrust faults form, each south of the last. Then count the slip the front has stored since its last great earthquakes, and find the seismic gap.

4. The physiographic divisions

Six divisions on a relief globe, each drawn by a stated rule from real heights: the Himalaya, the Northern Plains, the Indian Desert, the Peninsular Plateau, the Coastal Plains and the Islands. Then a cross-section that shows the mountain made the plain.

5. Rivers

Himalayan against Peninsular rivers: modelled hydrographs from measured rain and temperature, with the snow and the ground storage as switches. Find what really keeps a Himalayan river running in April, and which rivers are older than the mountains.

6. The monsoon

Test the giant-sea-breeze explanation against the rain that falls, find it too weak and too early, and build the monsoon from five measured parts. Then the onset across six weeks, the rain shadows, the Thar, and a season with plenty of rain that still fails a crop.

7. Soils and hazards

Six soils placed by their causes, black soil on the Deccan basalt, and the hazard geography: the earthquakes of the Himalayan arc under a seismic code revised in 2025, the Bay of Bengal's cyclones, the flood basins and the dry interior.