Paper I · 4 Geography of India & AP · 4.1.3 Rocks and geomorphology

4.1.3.2 Igneous, sedimentary and metamorphic rocks compared

Igneous rocks form from cooling magma, sedimentary rocks from compacted sediments laid in layers, and metamorphic rocks from older rocks changed by heat and pressure without melting.

  • APPSC Paper I · Paper I
  • Standard level
  • 8 min read
  • Full course

Key terms

  • igneous rocks
  • intrusive
  • extrusive
  • plutonic
  • volcanic
  • granite
  • basalt
  • gabbro
  • sedimentary rocks
  • lithification
  • strata
  • fossils
  • sandstone
  • shale
  • limestone
  • tillite
  • metamorphic rocks
  • foliation
  • banding
  • gneiss
  • slate
  • schist
  • marble
  • quartzite
  • khondalite
  • charnockite

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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