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Questions and Answers
Which type of sedimentary rock contains clasts?
What is the size range of clay and silt in clastic sedimentary rocks?
What is the composition of clastic sedimentary rocks divided into?
What is the size range of sand in clastic sedimentary rocks?
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What is the size range of gravel in clastic sedimentary rocks?
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Study Notes
Clastic Sedimentary Rocks
- Conglomerate, a type of sedimentary rock, contains clasts, which are fragments of pre-existing rocks.
- Clastic sedimentary rocks are classified based on the size of their clasts, with clay being the smallest (less than 0.0625 mm in diameter).
- Silt, another clast size, ranges from 0.0625 mm to 2 mm in diameter.
- Clastic sedimentary rocks are also divided into three composition categories: conglomerate (large clasts), sandstone (sand-sized clasts), and shale (clay-sized clasts).
- Sand, a common clast size, ranges from 2 mm to 0.0625 mm in diameter.
- Gravel, the largest clast size, consists of particles larger than 2 mm in diameter.
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Description
Test your knowledge of sedimentary rock identification and composition with this quiz. Explore the various environments of deposition and learn how texture can indicate the origin of sediment found in these rocks.
