Detailed Study Of Rocks

Question 1

What is Chalk?

Answer 1

• Chalk is a purer, younger form of limestone.
• Chalk is very poros.
• Has a medium resistance but is stronger than clays and younger than sands.

Question 2

What is limestone?

Answer 2

• Limestone is permeable
• Has underground rivers, passages and caves
• Generally resistant

Question 3

What is clay?

Answer 3

• It is formed from muds deposited by rivers or at sea
• Is soft and crumbly
• When compacted becomes shale
• Is generally weak

Question 4

What is Granite?

Answer 4

• It is formed from magma cooling deep underground
• Contains crystals of quartz
• Very resistant

Question 5

What is schist?

Answer 5

• Is formed by older metamorphics of slate, where it partly melted and solidified.
• Schist is very resistant

Question 6

What are slates?

Answer 6

• Formed from heated muds or shale.

- Very resistant