4 Geography · 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 Group 1
  • Advanced 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

Read the full note in the app. It is part of the APPSC Group 1 full course in Medha AI. Free in the app: the first chapter of each topic.

Read the full note in the app Geography questions with answers

All Rocks and geomorphology notes · APPSC Group 1 syllabus · APPSC G1 Paper I Mock 1 with answers · Start free

Medha AI writes its own notes and checks them against the sources listed. Medha AI is an independent preparation service. It is not affiliated with, endorsed by or connected to APPSC, TSPSC, MPSC, UPSC or any other commission or government body.