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Concept Maps

Geological Evolution — Concept Maps

ICSE · Class 12 · Geography

4 concept maps of Geological Evolution for ICSE Class 12 Geography, each also written out as a text outline. Part of the ICSE Class 12 Geography syllabus.

45 questions40 flashcards5 concepts

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4 Concept Maps

Geological Evolution of India – Chapter Overview

Geological Evolution of India – Chapter Overview

The map in words

  • Geological Evolution of India
    • Basic Concepts
      • Geology
      • Historical Geology
      • Era vs Period
      • Group vs System
    • Standard Geological Eras
      • Pre-Cambrian
        • Over 570 mya
        • No Fossils
      • Paleozoic
        • 245 to 570 mya
        • Early Life
      • Mesozoic
        • 66 to 245 mya
        • Middle Life
      • Cenozoic
        • Last 66 mya
        • Recent Life
    • Indian Geological Eras
      • Archean
        • Early Pre-Cambrian
      • Purana
        • Late Pre-Cambrian
      • Dravidian
        • 400 to 570 mya
      • Aryan
        • 400 mya to Present
    • Three Major Units
      • Peninsular Plateau
        • Oldest Landform
        • Igneous Rocks
        • Horst
        • Triangular Shape
      • Himalayan Mountains
        • Young Fold Mountains
        • Sedimentary Rocks
        • Arc Shaped
        • Plate Tectonics
      • Indo-Gangetic Plains
        • Alluvial Deposits
        • Depression Filled
        • Still Forming
    • Rock Systems
      • Archean System
        • Gneiss and Granite
      • Dharwar System
        • Gold and Mica
      • Cuddapah System
        • Iron Ore
      • Vindhyan System
        • Building Materials
      • Gondwana Rocks
        • Coal Deposits
      • Deccan Traps
        • Lava Flows
      • Tertiary Rocks
        • Rock Salt Gypsum
      • Quaternary Formations
        • Alluvial Plains

India's Geological Timeline and Major Events

India's Geological Timeline and Major Events

The map in words

  • 570M years ago
    • Pre-Cambrian Era Begins
  • 570M years ago
    • Archean and Purana Eras
  • 570M-245M years ago
    • Paleozoic Era
  • 245M years ago
    • Dravidian Period Ends
  • 245M-66M years ago
    • Mesozoic Era
  • 70M years ago
    • Tethys Sea Present - Himalayan Formation Begins
  • 65M-70M years ago
    • Indian Plate Drifts Northward
  • 30M-60M years ago
    • Plate Collision - Himalayan Emergence
  • 20M-30M years ago
    • Himalayas Rising Dramatically
  • 66M years ago to Present
    • Cenozoic Era - Aryan Formation
  • 2M-3M years ago
    • Quaternary - Recent Deposits and Laterites

Geological Timeline of India

Geological Timeline of India

The map in words

  • 570 mya
    • Pre-Cambrian ends
  • 570 mya
    • Paleozoic begins - Tethys Sea active
  • 400 mya
    • Dravidian era begins
  • 245 mya
    • Mesozoic era begins
  • 70 mya
    • Tethys Sea starts contracting
  • 66 mya
    • Deccan Trap volcanic activity
  • 60 mya
    • Indian and Eurasian plates closer
  • 30 mya
    • Himalayan ranges begin emerging
  • 2 mya
    • Quaternary begins - Alluvial plains forming
  • Present
    • Sundarbans Delta still growing

Geological evolution of India

Geological evolution of India

The map in words

  • Geological evolution of India
    • Basic geology
    • Geological time divisions
    • Indian geological units
    • Peninsular Plateau
    • Himalayan Mountains
    • Indo-Gangetic Plains
    • Indian rock systems
    • Rock distribution and minerals

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Frequently Asked Questions

What are the important topics in Geological Evolution for ICSE Class 12 Geography?
Key topics in Geological Evolution include Basic Geological Ideas and Time Division, Indian Geological Units and the Peninsular Plateau, The Himalayas and Plate Tectonic Theory, The Great Plain and Ongoing Landform Development. Study these first, then practise questions on each for the ICSE Class 12 board exam.
What do the concept maps for Geological Evolution show?
The 4 maps show how the ideas in Geological Evolution connect: Geological Evolution of India – Chapter Overview; India's Geological Timeline and Major Events. Each map is also written out as an outline on this page.
How should I revise Geological Evolution for the ICSE Class 12 board exam?
Learn the core ideas first, then work through the 45 practice questions on Geological Evolution. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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