sandstone
Sign in to saveSandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains, cemented together by another mineral. Sandstones comprise about 20–25% of all sedimentary rocks.
AI overview
Sandstone is a type of rock made from sand-sized grains of silica that have been cemented together by minerals over time. It makes up about one-fifth to one-quarter of all sedimentary rocks found on Earth.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Rock.name
- Sandstone
- Rock.type
- Sedimentary
- Rock.image
- USDA Mineral Sandstone 93c3955.jpg
- Rock.caption
- Cut slab of sandstone
- Rock.composition
- Typically quartz and feldspar; lithic fragments are also common. Other minerals may be found in particularly mature sandstone.
via Wikipedia infobox
Article
14 sectionsContents
- Origins
- Components
- Framework grains
- Matrix
- Cement
- Pore space
- Types of sandstone
- Dott's classification scheme
- Quartzite
- Uses
- See also
- Notes
- Bibliography
- Further reading
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains, cemented together by another mineral. Sandstones comprise about 20–25% of all sedimentary rocks.
Most sandstone is composed of quartz or feldspar because they are the most resistant minerals to the weathering processes at the Earth's surface. Like uncemented sand, sandstone may be imparted any color by impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Because sandstone beds can form highly visible cliffs and other topographic features, certain colors of sandstone have become strongly identified with certain regions, such as the red rock deserts of Arches National Park and other areas of the American Southwest.