sedimentary
Conglomerate
Clastic sedimentary rock
AI-generated identification · may be incorrectHardness varies from 6 to 7 depending on clast composition; displays rounded gravel-sized rock and mineral fragments cemented together with a finer matrix.
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Physical properties
Hardness varies from 6 to 7 depending on clast composition; displays rounded gravel-sized rock and mineral fragments cemented together with a finer matrix.
Formation & geological history
Formed in high-energy environments like fast-flowing rivers or beaches where rounded clasts accumulate and undergo lithification over millions of years.
Uses & applications
Used primarily as crushed stone for construction, road aggregate, and occasionally as decorative facing stone.
Geological facts
Conglomerates are often called puddingstone when the colorful pebbles contrast sharply with the matrix, resembling plum pudding.
Field identification & locations
Easily identified by its distinct rounded pebbles embedded in a finer-grained sand or silt matrix; found globally in ancient stream and shore deposits.
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