Sedimentary
Puddingstone
Conglomerate
Composed of rounded pebbles or cobbles cemented together in a finer-grained matrix. Often features contrasting colors between the clasts and the matrix.
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Physical properties
Composed of rounded pebbles or cobbles cemented together in a finer-grained matrix. Often features contrasting colors between the clasts and the matrix.
Formation & geological history
Formed in high-energy environments like fast-flowing rivers, beaches, or alluvial fans where water or gravity transported and deposited varying sizes of rock fragments, which were later lithified.
Uses & applications
Can be used as a decorative stone in landscaping or lapidary work. Historically sometimes used as a building material.
Geological facts
Puddingstone gets its name from its resemblance to a traditional plum pudding, with the pebbles looking like raisins or plums mixed into the dough.
Field identification & locations
Identified by its distinctive appearance of large, rounded clasts within a finer matrix. Look for varying compositions of clasts which can indicate the source rocks.
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