Indian Geography Part 1: The Physiographic Divisions, Himalaya to Islands, Exam-Ready Notes

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India splits into six clear physical belts, north to south. Nearly every map question in prelims touches one of them.

The six belts

  • Northern Mountains: Himalaya, Karakoram, Ladakh, Purvanchal and NE hills.
  • Indo-Gangetic Plain: Punjab plains, Ganga plain, Brahmaputra valley.
  • Peninsular Plateau: Central Highlands plus Deccan Trap, the oldest landmass.
  • Coastal plains: narrow Konkan-Malabar west, wide Coromandel-Utkal east.
  • Thar Desert and the sandy arid west; islands: volcanic Andaman, coral Lakshadweep.

Himalaya anatomy

  • Three parallel ranges: Himadri (Greater), Himachal (Lesser, hill stations), Shivalik (Outer, duns).
  • Syntaxial bends at the Indus gorge in the west and Namcha Barwa in the east.

Why it matters

  • Monsoon barrier, perennial river sources, seismic zone V and border strategy all key off this map.

Revise in 30 seconds

  • Six belts: Mountains-Plain-Plateau-Coast-Desert-Islands.
  • Shivaliks carry the duns; Himadri is the Greater Himalaya.
  • Lakshadweep is coral, Andaman volcanic.
  • Western ghats block the monsoon; eastern ghats do not.

Quick revision

  • Northern Mountains: Himalaya, Karakoram, Ladakh, Purvanchal and NE hills.
  • Indo-Gangetic Plain: Punjab plains, Ganga plain, Brahmaputra valley.
  • Peninsular Plateau: Central Highlands plus Deccan Trap, the oldest landmass.
  • Coastal plains: narrow Konkan-Malabar west, wide Coromandel-Utkal east.
  • Thar Desert and the sandy arid west; islands: volcanic Andaman, coral Lakshadweep.
  • Three parallel ranges: Himadri (Greater), Himachal (Lesser, hill stations), Shivalik (Outer, duns).
Series β€” Indian Geography Β· Part 1 of 8