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Questions
Name different types of sedimentary rocks.
Name the three types of sedimentary rocks based on their formation.
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Solution
The three types of sedimentary rocks based on their formation are:
- Mechanically formed sedimentary rocks (clastic rocks) - formed by accumulation and compaction of sediments (e.g. sandstone, shale).
- Organically formed sedimentary rocks - formed from organic materials like remains of plants and animals (e.g. coal, limestone).
- Chemically formed sedimentary rocks - formed by precipitation of minerals from water (e.g. limestone, chert).
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| A. | Basalt | 1. | Anthracite |
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Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
