Sedimentary rock
Conglomerate and breccia
Coarse-grained (clasts over 2 mm). Conglomerate has well-rounded clasts and forms in high-energy settings; breccia has angular clasts and typically forms close to the source, as on alluvial fans.
More photos and thin sections
Other sedimentary rocks
Quartz arenite · Arkose · Lithic arenite · Wacke (greywacke) · Mudrocks: shale, mudstone, siltstone, claystone · Limestone · Chalk · Coquina · Oolite · Travertine and tufa · Dolostone · Chert · Diatomite · Radiolarite · Evaporites: rock salt and gypsum · Banded iron formation · Coal: peat to anthracite · Oil shale