noun
- Plural of arkose; coarse-grained sedimentary rocks composed mainly of feldspar and quartz, typically formed from the weathering and erosion of granitic rocks.
Usage: geology; technical
Examples
- The geologist identified arkoses in the rock formation near the mountain range.
- Arkoses are commonly found in areas with significant granite bedrock.
- The coarse texture of arkoses indicates rapid erosion and deposition.
- These arkoses contain a high percentage of feldspar minerals.