Rock Identifier

Category

Sedimentary (Anthropogenic)

Browse sedimentary (anthropogenic) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Anthropogenic) in the encyclopedia

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Breccia

Ironstone

Coal

Kambaba Jasper

Limestone

Asphalt Rock

Claystone

Mudstone

Sapropel

Bituminous Shale

Bituminous Shale

Sandstone (likely Ferruginous) (Arenite with Iron Oxide cement) — sedimentary

Sandstone (likely Ferruginous)

Arenite with Iron Oxide cement

Sandstone (Arenite (SiO2 based with primary clasts 0.0625 to 2 mm)) — sedimentary

Sandstone

Arenite (SiO2 based with primary clasts 0.0625 to 2 mm)

Sandstone (Quartzite-rich) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Quartzite-rich)

Clastic Sedimentary Rock (primarily SiO2)

Bituminous Coal (Bituminous coal (Carbonaceous sedimentary rock)) — sedimentary

Bituminous Coal

Bituminous coal (Carbonaceous sedimentary rock)

Sandstone (Clastic sedimentary rock (quartz arenite)) — sedimentary

Sandstone

Clastic sedimentary rock (quartz arenite)

Hag Stone (Perforated Sedimentary Rock / Flint / Limestone) — sedimentary

Hag Stone

Perforated Sedimentary Rock / Flint / Limestone

Fossiliferous Limestone (Biogenic Sedimentary Rock (primarily CaCO3)) — sedimentary

Fossiliferous Limestone

Biogenic Sedimentary Rock (primarily CaCO3)

Sandstone (Sedimentary Clastic Rock (Quartz Arenite)) — sedimentary

Sandstone

Sedimentary Clastic Rock (Quartz Arenite)

Fossiliferous Mudstone / River Pebble (Sedimentary rock with trace fossil or inclusion) — sedimentary

Fossiliferous Mudstone / River Pebble

Sedimentary rock with trace fossil or inclusion

Chalk (Sedimentary carbonate rock (Calcite, CaCO3)) — sedimentary

Chalk

Sedimentary carbonate rock (Calcite, CaCO3)

Limestone Boulder (Sedimentary Rock (Calcium Carbonate, CaCO3)) — sedimentary

Limestone Boulder

Sedimentary Rock (Calcium Carbonate, CaCO3)

Limestone (Sedimentary Rock (Primarily Calcite: CaCO3)) — sedimentary

Limestone

Sedimentary Rock (Primarily Calcite: CaCO3)

Banded Jasper and Quartz Pebble (Silicified sedimentary rock / Chalcedony (SiO2)) — sedimentary

Banded Jasper and Quartz Pebble

Silicified sedimentary rock / Chalcedony (SiO2)

Pebble (Lithified rock fragment / Sedimentary clast) — sedimentary

Pebble

Lithified rock fragment / Sedimentary clast

River Rock (Polished Quartzite / Silicified Sedimentary Rock) — sedimentary

River Rock

Polished Quartzite / Silicified Sedimentary Rock

Limestone Pebble (Calcite-rich Sedimentary Rock (CaCO3)) — sedimentary

Limestone Pebble

Calcite-rich Sedimentary Rock (CaCO3)

Pebble / Sandstone / Siltstone (Sedimentary Rock (Quartz Sandstone / Siltstone)) — sedimentary

Pebble / Sandstone / Siltstone

Sedimentary Rock (Quartz Sandstone / Siltstone)

Coal (Bituminous / Anthracite) (Organic Sedimentary Rock (Carbonaceous Rock)) — sedimentary

Coal (Bituminous / Anthracite)

Organic Sedimentary Rock (Carbonaceous Rock)

Limestone Pebble (Calcite-rich Sedimentary Rock (CaCO3)) — sedimentary

Limestone Pebble

Calcite-rich Sedimentary Rock (CaCO3)

River Pebble (likely Quartzite or Chert) (Sedimentary Clast (Silicon Dioxide dominant)) — sedimentary

River Pebble (likely Quartzite or Chert)

Sedimentary Clast (Silicon Dioxide dominant)

Sandstone (Quartzite-rich Cobble) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Quartzite-rich Cobble)

Clastic sedimentary rock (primarily SiO2)

River Pebbles (Chert and Quartzite) (Sedimentary Clastic Rock (Silica-rich)) — sedimentary

River Pebbles (Chert and Quartzite)

Sedimentary Clastic Rock (Silica-rich)

River Stone (River Pebble) (Rounded Sedimentary Rock (Lithic Clast)) — sedimentary

River Stone (River Pebble)

Rounded Sedimentary Rock (Lithic Clast)

Mudstone/Siltstone with Liesegang Bands (Argillaceous Sedimentary Rock with Chemical Banding) — sedimentary

Mudstone/Siltstone with Liesegang Bands

Argillaceous Sedimentary Rock with Chemical Banding

Sandstone (Quartzose) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Clastic sedimentary rock (primarily SiO2)

Hagstone (Adder Stone) (Chert or Sedimentary pebble with natural perforation) — sedimentary

Hagstone (Adder Stone)

Chert or Sedimentary pebble with natural perforation

Conglomerate (or Breccia / Porphyry) (Clastic Sedimentary Rock (Conglomerate / Sandstone)) — sedimentary

Conglomerate (or Breccia / Porphyry)

Clastic Sedimentary Rock (Conglomerate / Sandstone)

Banded Sandstone (River Pebble) (Clastic Sedimentary Rock (SiO2 with impurities)) — sedimentary

Banded Sandstone (River Pebble)

Clastic Sedimentary Rock (SiO2 with impurities)

Banded Siltstone or Mudstone (Clastic Sedimentary Rock (Siltstone/Argillite)) — sedimentary

Banded Siltstone or Mudstone

Clastic Sedimentary Rock (Siltstone/Argillite)

Quartz Breccia with Iron Staining (Tectonic or Sedimentary Breccia (SiO2 with Fe2O3)) — sedimentary

Quartz Breccia with Iron Staining

Tectonic or Sedimentary Breccia (SiO2 with Fe2O3)

Limestone with Lichen (Carbonate Sedimentary Rock (primarily CaCO3)) — sedimentary

Limestone with Lichen

Carbonate Sedimentary Rock (primarily CaCO3)

Chert Conglomerate (Potomac Puddle Stone) (Sedimentary Conglomerate with Iron-Oxide matrix) — sedimentary

Chert Conglomerate (Potomac Puddle Stone)

Sedimentary Conglomerate with Iron-Oxide matrix

River Cobble (Quartzite or Sandstone) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

River Cobble (Quartzite or Sandstone)

Clastic sedimentary rock (primarily SiO2)

Ferruginous Sandstone Pebble (Iron-rich Clastic Sedimentary Rock) — sedimentary

Ferruginous Sandstone Pebble

Iron-rich Clastic Sedimentary Rock

Glacial Erratic (Graywacke/Sandstone) (Clastic Sedimentary Rock (Lithic Sandstone)) — sedimentary

Glacial Erratic (Graywacke/Sandstone)

Clastic Sedimentary Rock (Lithic Sandstone)

Sandstone (River Pebble) (Clastic Sedimentary Rock (primarily Quartz)) — sedimentary

Sandstone (River Pebble)

Clastic Sedimentary Rock (primarily Quartz)

Sandstone concretion (Arenite sedimentary rock (concretion/nodule)) — sedimentary

Sandstone concretion

Arenite sedimentary rock (concretion/nodule)

Quartz Geode (Silicon Dioxide (SiO2) in a Sedimentary Vug) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2) in a Sedimentary Vug

Gray River Pebble (likely Limestone or Siltstone) (Sedimentary Rock (Calcium Carbonate or Siliciclastic)) — sedimentary

Gray River Pebble (likely Limestone or Siltstone)

Sedimentary Rock (Calcium Carbonate or Siliciclastic)

Sandstone (Quartzose Sandstone) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

Banded Iron Formation (BIF) / Ironstone (Ferruginous sedimentary rock (Fe2O3 + SiO2)) — sedimentary

Banded Iron Formation (BIF) / Ironstone

Ferruginous sedimentary rock (Fe2O3 + SiO2)

Limestone (Sedimentary Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Limestone

Sedimentary Limestone (Calcium Carbonate, CaCO3)