sedimentary
Conglomerate
Clastic sedimentary rock
AI-generated identification · may be incorrectHardness varies between 6 and 7 depending on clast composition, multicolored with prominent rounded pebbles, dull to vitreous luster, clastic texture, no cleavage.
Identified More sedimentary →
Explore Conglomerate in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness varies between 6 and 7 depending on clast composition, multicolored with prominent rounded pebbles, dull to vitreous luster, clastic texture, no cleavage.
Formation & geological history
Formed by the consolidation and cementation of gravel-sized rounded fragments, often in high-energy environments like rivers or beaches.
Uses & applications
Used primarily as crushed stone in construction, road aggregate, and occasionally as decorative facing stone.
Geological facts
The rounded shape of the gravel clasts indicates that they were transported a significant distance by water before deposition.
Field identification & locations
Easily identified by its distinct 'plum pudding' appearance with visible rounded pebbles cemented in a finer matrix, found globally in sedimentary basins.
More like this
Other sedimentary specimens
Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion
Calcareous concretion; exact fossil and host-rock composition are not identifiable from the image
fossil
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary