1. A coarse-grained sedimentary rock composed mainly of sand-sized feldspar and quartz grains, typically formed from the weathering and erosion of granite or other feldspar-rich rocks.
Usage: geology; technical

Examples

• The arkose deposits near the mountain range indicate ancient granite erosion.
• Geologists identified arkose in the core sample, suggesting a nearby granitic source.
• This arkose formation is rich in feldspar, making it useful for studying weathering patterns.
• The pink color of the arkose comes from its abundant feldspar content.
• Arkose is commonly found in areas with significant tectonic uplift and erosion.