Sandstone
by Kristin Elmquist
Title
Sandstone
Artist
Kristin Elmquist
Medium
Photograph - Digital Art
Description
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) mineral particles or rock fragments.
Most sandstone is composed of quartz or feldspar because they are the most resistant minerals to weathering processes at the Earth's surface, as seen in Bowen's reaction series. Like uncemented sand, sandstone may be any color due to impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Since sandstone beds often form highly visible cliffs and other topographic features, certain colors of sandstone have been strongly identified with certain regions.
Rock formations that are primarily composed of sandstone usually allow the percolation of water and other fluids and are porous enough to store large quantities, making them valuable aquifers and petroleum reservoirs. Fine-grained aquifers, such as sandstones, are better able to filter out pollutants from the surface than are rocks with cracks and crevices, such as limestone or other rocks fractured by seismic activity.
Uploaded
October 14th, 2017
Statistics
Viewed 167 Times - Last Visitor from New York, NY on 04/24/2024 at 10:39 AM
Embed
Share
Sales Sheet
Comments
There are no comments for Sandstone. Click here to post the first comment.