Red Sandstone (Arkose)
Clastic Sedimentary Rock (Lithic Arkose)
sedimentary
Category
Sedimentary Rock (Specifically A Clastic Sedimentary Rock Formed Into A Cobble)
Browse sedimentary rock (specifically a clastic sedimentary rock formed into a cobble) specimens identified by the Rock Identifier community.
Learn about Sedimentary Rock (Specifically A Clastic Sedimentary Rock Formed Into A Cobble) in the encyclopedia
View all →
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide cement)
sedimentary
Sandstone (Sedimentary Rock)
Arenite (SiO2 based)
sedimentary
Limestone River Cobble
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Sandstone (Ferruginous)
Sandstone (clastic sedimentary rock, mainly SiO2 with iron oxide cement)
sedimentary
Conglomerate
Clastic sedimentary rock (Polymictic Conglomerate)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Quartzite texture)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone
Quartz Arenite / Sedimentary Rock
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
sedimentary
Weathered basalt cobble
Basalt, a fine-grained mafic volcanic rock composed mainly of plagioclase and pyroxene, with minor olivine and iron oxides
igneous
River Pebbles (Chert and Quartzite)
Sedimentary Clastic Rock (Silica-rich)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Conglomerate (River Rock)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Banded Sandstone (Differential Weathering)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Limestone (River Pebble)
Calcite (Calcium Carbonate) - CaCO3
sedimentary
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
sedimentary
Chert / Flint
Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone (Greywacke)
Sandstone (SiO2 enriched with lithic fragments)
sedimentary
Banded Siltstone or Mudstone
Clastic Sedimentary Rock (Siltstone/Argillite)
sedimentary
Conglomerate (or Breccia / Porphyry)
Clastic Sedimentary Rock (Conglomerate / Sandstone)
sedimentary
Sandstone
Clastic sedimentary rock (quartz arenite)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Greywacke)
Clastic Sedimentary Rock (SiO2 with lithic fragments)
sedimentary
Rounded yellow-brown cobble
Likely weathered sandstone or quartz-rich conglomeratic clast; exact identification requires a fresh surface and testing
sedimentary
Quartz-veined Sandstone
Sedimentary rock with quartz vein (SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (major component SiO2)
sedimentary
Sandstone (Cross-bedded Drill Core)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Rounded sandstone pebble
Quartz-rich sandstone, commonly arkose or lithic sandstone
sedimentary
Sandstone
Arenite
sedimentary
Sandstone (Quartz-rich)
Arenite
sedimentary
Ferruginous Conglomerate
Ferruginous Conglomerate (Clastic Sedimentary Rock)
sedimentary
Sandstone with Iron-Stained Band
Quartz Arenite / Sedimentary Rock
sedimentary
Sandstone
Arenite (primarily composed of SiO2)
sedimentary
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Red Jasper or Ferruginous Chert
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Quartz Veined Rock (Likely Graywacke or Quartzite)
Silicon Dioxide (SiO2) veins in Metasedimentary matrix
metamorphic
Sandstone (Quartzite-rich)
Clastic sedimentary rock (SiO2 primarily)
sedimentary