Question

Which agents must be present for cementation to occur? Check all that apply.

1. minerals
2. water
3. heat
4. sediment
5. animals and plants

Answer 1

sediment and organic substances

Answer 2

The agents like mineral, water, and sediments are present for the sedimentation to occur.

Explanation:

• Cementation is formed from pre existing rocks. This occurs due to precipitation of the mineral matter in that layer containing the pores.
• The cementation is formed from the sediments. The cementation in geology is defined as hardening and welding process.
• The hardening of the preexisting rock layer. The rock layer may be sedimentary, metamorphic or igneous.  
• Hence formation of sedimentary layer with small pores containing the mineral matter is called as cementation.

To know more:

Rocks formed by consolidation and cementation of sediments deposited under water are known as_________

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