arkose

[ad_1] noun

1. a granular sedimentary rock composed of quartz and feldspar or mica; a feldspathic sandstone.

noun

1. a sandstone consisting of grains of feldspar and quartz cemented by a mixture of quartz and clay minerals

1. A usually pinkish or red sandstone consisting primarily of quartz and feldspar. Arkose usually forms as the result of the rapid disintegration of granite in areas of vigorous erosion. Its grains are usually angular and poorly sorted (mixed randomly in differing sizes).

[ad_2]