WikiVisually
Infinite photos and videos for every Wiki article · Find something interesting to watch in seconds
Celebrities Largest Palaces British Monarchs Great Cities Tallest Buildings Great Artists Sports Largest Empires Countries of the World Presidents Famous Castles Recovered Treasures History by Country Great Museums Wonders of Nature Wars and Battles Rare Coins Animals Richest US Counties Supercars Ancient Marvels Orders and Medals Best Campuses Kings of France Crown Jewels World Banknotes
more top lists
History
Sandstone
Videos
Page
Sandstone is a clastic sedimentary rock composed mainly of sand-sized silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks.
Cut slab of sandstone
Cut slab of sandstone
Alcove in the Navajo Sandstone
Alcove in the Navajo Sandstone
Kokh-type tombs cut into the multicoloured sandstone of Petra
Kokh-type tombs cut into the multicoloured sandstone of Petra
Sand grains of quartz with hematite coating providing an orange colour
Sand grains of quartz with hematite coating providing an orange colour
Clastic rock
Videos
Page
Clastic rocks are composed of fragments, or clasts, of pre-existing minerals and rock. A clast is a fragment of geological detritus, chunks, and smaller grains of rock broken off other rocks by physical weathering. Geologists use the term clastic to refer to sedimentary rocks and particles in sediment transport, whether in suspension or as bed load, and in sediment deposits.
A thin section of a clast (sand grain), derived from a basalt scoria. Vesicles (air bubbles) can be seen throughout the clast. Plane light above, cros
A thin section of a clast (sand grain), derived from a basalt scoria. Vesicles (air bubbles) can be seen throughout the clast. Plane light above, cross-polarized light below. Scale box is 0.25 mm.
Claystone from Montana
Claystone from Montana
Conglomerate
Conglomerate
Breccia. Notice the angular nature of the large clasts
Breccia. Notice the angular nature of the large clasts