Task: Class Definition Understanding (ontology: Earth_Environment/SWEET)

Which of the following definitions best describes 'structural configuration'?

A. A cluster of ferromagnesian minerals in an igneous rock, from several centimeters to decimeters in diameter, that may be a segregation or an altered xenolith.
B. Thin sheet of material intruded into the rock. May be hydrothermal, magmatic, or sedimentary.
C. Constituent occurs in a the concept integral to the rock, such as layering, veinlets, overgrowths. The 'material' composition of these parts will often be other rock materials, not minerals, and 'ParticleGeometryDescription' associated with these describes the geometry of the constituent, not the particles the it is made of. These roles are mostly useful for RockMaterial descriptions that apply to individual samples, because their distribution is unlikely to be pervasive enought to be considered characteristic of a large mass of material.
D. Constituent occurs as a concentric envelope enclosing another constituent. the concept is a non-genetic term.

Answer: Constituent occurs in a the concept integral to the rock, such as layering, veinlets, overgrowths. The 'material' composition of these parts will often be other rock materials, not minerals, and 'ParticleGeometryDescription' associated with these describes the geometry of the constituent, not the particles the it is made of. These roles are mostly useful for RockMaterial descriptions that apply to individual samples, because their distribution is unlikely to be pervasive enought to be considered characteristic of a large mass of material.