Compacting and Cementing

Facts about Compaction and Cementing

1.Are formed from layers of sediment built up over many years

2.Are grains of sediment cemented togheter by various minerals

3.may contain fossils-remains of plants and animals that are caught up in the sediment

This process is called compaction. At the same time the particles of sediment begin to stick to each other they are cemented together by clay or by minerals like Silica or calcite. After compaction and cementation the sedimentary and sequence has changed into a sedimentary rock

Compaction

happens when sediments are deeply buried placing them under pressure because of weight of overling layers.This squashes the grains together more thightly

Cementing

Is where new minerals stick the grains in a bricklayer's mortar. If you look carefully at the microscope photo, you can see mineral crystals that have grown around the sediment grains and bonded them together

Compaction and cementation happens after sediment have been deposeted sediments get piled up and eventually they get glued together

This was our lesson on compacting and cementing. We hope you learned something on this lesson.

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Group 4

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Compacting and Cementing

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