arcose
|ar-cose|
🇺🇸
/ˈɑrkoʊs/
🇬🇧
/ˈɑːkəʊs/
feldspar-rich sandstone
Etymology
'arcose' originates from French, specifically the word 'arkose', which was borrowed from German 'Arkose'.
'arcose' changed from French 'arkose' (and German 'Arkose') and eventually entered modern English as 'arcose' (an alternative spelling to 'arkose').
Initially, the term referred to the same rock type — a feldspar-rich sandstone — and over time it has retained that technical geological meaning.
Meanings by Part of Speech
Noun 1
a coarse-grained sandstone containing a high proportion (commonly >25%) of feldspar; a feldspathic sandstone typically derived from the erosion of granitic source rocks.
Many of the basin's sedimentary layers include beds of arcose formed from nearby granitic terrains.
Synonyms
Last updated: 2025/10/09 08:04