SEDIMentary rocks !!
Sedimentary rocks are formed when sand, mud and pebbles are squashed in layers and can be formed in lakes, rivers and seas. There are 3 types of sedimentary rocks which are clastic, organic and chemical. Sedimentary rocks can be identified by...
Clastic rocks are...
- formed when rocks are weathered, then compacted and cemented.
- types are sandstone and silstone
- shale will feel smooth in your fingers
- silt stone will feel gritty in your fingers
- clay stone will feel smooth in your fingers
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- formed when rocks are weathered, then compacted and cemented.
- types are sandstone and silstone
- shale will feel smooth in your fingers
- silt stone will feel gritty in your fingers
- clay stone will feel smooth in your fingers
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Organic rocks are...
- formed from the accumulation of organic debris.
- debris is basically dead animals, leaves, roots that have been compacted together.
- fossils are found in organic sedimentary rocks
- types are limestone
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- formed from the accumulation of organic debris.
- debris is basically dead animals, leaves, roots that have been compacted together.
- fossils are found in organic sedimentary rocks
- types are limestone
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Chemical rocks are...
- formed from water precipitation
- precipitation means when dissolved minerals come out of water.
- unlike other sedimentary rocks, chemical rocks aren't made from sediments.
- chemical rocks are made from mineral crystals that have dissolved in water
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- formed from water precipitation
- precipitation means when dissolved minerals come out of water.
- unlike other sedimentary rocks, chemical rocks aren't made from sediments.
- chemical rocks are made from mineral crystals that have dissolved in water
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