Worlds of David Darling
Encyclopedia of Science
   
Home > Encyclopedia of Science

arkose




arkose
A sample of arkose from Mount Tom, Massachusetts. Credit: R.Weller/Cochise College
Arkose is a comparatively young, medium-grained sedimentary rock, resembling sandstone, which consists of quartz with up to 30% feldspar. Arkose forms in marine and freshwater sediments and continental deposits, usually from the breakdown of granite. It is pale gray to pink in color.


Related category

   • GEOLOGY AND PLANETARY SCIENCE