subarkose

subarkose

[səb′är‚kōs]
(geology)
Sandstone that is intermediate in composition between arkose and pure quartz sandstone; it contains less feldspar than arkose.
References in periodicals archive ?
In the Eastern Himalaya of India, sandstones from the Middle Siwalik Subgroup are mostly subarkose to sublitharenite according to Kundu et al.
The Lower Siwalik sandstones are mainly subarkoses to sublitharenites with minor feldspathic wacke and lithic arenite, whereas the Middle Siwalik sandstones are mainly sublitharenites with minor lithic arenite and subarkose.
In its type area near Guysborough, the Middle Devonian Glenkeen Formation consists mainly of conglomerate, with minor subarkose, siltstone, tuffaceous sandstone, turf, and basaltic flows.