Grain size Grain size Grain size (or particle size) is the diameter of individual grains of sediment, or the lithified particles in clastic rocks. The term may also be applied to other granular materials. This is different from the crystallite size, which refers to the size of a single crystal inside a particle or grain. A single grain can be composed of several crystals. Granular material can range from very small colloidal particles, through clay, silt, sand, gravel, and cobbles, to boulders. Size ranges define limits of classes that are given names in the Wentworth scale (or Udden–Wentworth scale) used in the
Granular configuration automation Granular configuration automation Granular configuration automation (GCA) is a specialized area in the field of configuration management which focuses on visibility and control of an IT environment’s configuration and bill-of-material at the most granular level. This framework focuses on improving the stability of IT environments by analyzing granular information. It responds to the requirement to determine a threat level of an environment risk, and to allow IT organizations to focus on those risks with the highest impact on performance. Granular Configuration Automation combines two major trends in configuration management: the move to collect detailed and comprehensive environment information and the