Medium-grained rocks can be composed of quartz grains, feldspar grains (arkose), or rock fragments and clay (graywacke). Sandstone (Photograph by Parvinder Sethi). Medium-sized grains in clastic sedimentary rocks form sandstone. This sample is a quartz sandstone.
Bliss â¢ McCabe: Discourse Genres 135 special interests and can give lengthy descriptions ofrelevant objects such as rocks or music).â¢ We have identified the following components thatappear to be necessary for a complete proceduraldiscourse regarding how a game is played: goals,players, materials, and procedures.
The noun DISCOURSE has 3 senses: 1. extended verbal expression in speech or writing. 2. an address of a religious nature (usually delivered during a church service). 3. an extended communication (often interactive) dealing with some particular topic. Familiarity information: DISCOURSE used as a noun is uncommon.