Introduction
earth's crust has different rock types according to the temperature, pressure, formation method and material that are present.
18 words
Main Body
Nature of Major Rocks and Mode of Origin:
○ Contact metamorphic rocks
○ Regional metamorphic rocks
eg ○ Carbon from graphite is weaker than diamond but stronger than coal
Rocks are of a huge variety based on how they originate, where they are deposited and how they emerge back.
Continuation of rock types classification:
○ Contact metamorphic rocks
○ Regional metamorphic rocks
Eg ○ Carbon from graphite is weaker than diamond but stronger than coal
Rocks are of a huge variety based on how they originate, where they are deposited and how they emerge back.
Diagram
Cross-section diagram of earth's crust showing layers with labels: igneous (gradual deposition after erosion), weathering, lillihed and heat (weathering), metamorphic rocks
- Good classification of rock types
- Diagram included to illustrate crust layers
- Mention of specific examples (graphite, diamond, coal)
- Clear differentiation between volcanic zones
Aditya Talwar
World Physical Geography
Geophysical Phenomena
Rock types and formation
204
Total words
11
Paragraphs
1
Bullets
analytical and descriptive
Tone