Prelims · 3 Physical & World Geography · 3.3 Rocks and geomorphology

3.3.6 Aeolian landforms: deflation hollows, mushroom rocks, dunes and loess

In hot deserts, wind and occasional sheet floods shape the land: wind lifts and blasts sand to make deflation hollows and mushroom rocks, and drops it as dunes and loess.

  • APPSC Group 2 · Prelims
  • Standard level
  • 7 min read
  • Full course

Key terms

  • aeolian
  • wind
  • desert
  • deflation
  • abrasion
  • impact
  • saltation
  • sheet flood
  • blow out
  • deflation hollow
  • mushroom rock
  • pedestal rock
  • yardang
  • zeugen
  • ventifact
  • pediment
  • pediplain
  • inselberg
  • playa
  • alkali flat
  • bajada
  • barchan
  • parabolic dune
  • seif
  • longitudinal dune
  • transverse dune
  • star dune
  • loess
  • erg
  • reg
  • hamada

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. AP angleStandard
  5. Mains writingMains writing
  6. Common trapsFoundation
  7. Quick revisionFoundation

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