noun
- a sedimentary rock composed of rounded fragments larger than 2 millimeters in diameter
Usage: geology
Examples
- The geologist identified the rock formation as a psephite due to its coarse, rounded pebbles.
- Psephites form when fast-moving water deposits large rock fragments.
- The beach psephite contained fragments of quartz and granite.
- Students learned to distinguish psephite from finer-grained sedimentary rocks.
- The ancient riverbed left behind layers of psephite and sandstone.