A clastic rock composed of sand-sized grains derived from the physical weathering of granite and containing a sizable proportion of feldspar is termed ________.

Question

Quizplus · Accepted Answer

The term "arkose" refers to a clastic rock composed of sand-sized grains that have been derived from the physical weathering of granite or other igneous rocks and containing a sizable proportion of feldspar. Therefore, option D is the correct answer. Metasandstone and lithosandstone are not commonly used terms in geology, and wacke refers to a poorly sorted, muddy sandstone with a mixture of different-sized grains and abundant rock fragments.

A Clastic Rock Composed of Sand-Sized Grains Derived from the Physical