arkose
|ar-kose|
🇺🇸
/ˈɑɹkoʊs/
🇬🇧
/ˈɑːkəʊs/
feldspar-rich coarse sandstone
Etymology
'arkose' originates from French, specifically the word 'arkose', borrowed from German 'Arkose'.
'arkose' entered English in the mid-19th century from French 'arkose', which itself was borrowed from German 'Arkose'.
Initially and historically it has been used in geology to denote this feldspar-rich sandstone; the meaning has remained essentially the same.
Meanings by Part of Speech
Noun 1
a coarse-grained sandstone containing a high proportion (commonly at least 25%) of feldspar, typically derived from the rapid physical weathering of feldspar-rich source rocks such as granite; often pink or red in color.
The geologist examined a sample of arkose collected from the riverbank to study its feldspar content.
Synonyms
Last updated: 2025/10/15 15:15