subarkosic arenite
Quick Summary
Subarkosic arenite, also known as subarkose, is a type of sandstone. It is characterized by having 5–25 percent of its sand grains composed of feldspar. Sandstones are sedimentary rocks made primarily of sand-sized grains. They are classified based on their texture and mineralogy, specifically the proportions of quartz, feldspar, and rock fragments. In subarkosic arenite, feldspar grains are more abundant than rock fragments, but their feldspar content is between 5 and 15 percent. This distinguishes it from arkose, which has more than 25 percent feldspar.12
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