Any rock altered in the solid state from pre-existing rocks by any combination of heat, pressure, and chemically active fluids is a(n) ____ rock.
A) metamorphic
B) igneous
C) sedimentary
D) clastic
E) igneous or metamorphic

Question

Quizplus · Accepted Answer

The description fits the definition of metamorphic rock, as it is altered by heat, pressure, and chemically active fluids. Igneous rocks are formed from cooling and solidification of molten materials, while sedimentary rocks are formed by accumulation and lithification of sediment. Clastic rocks are a type of sedimentary rock formed from broken fragments of pre-existing rocks. The answer cannot be E) as it is too broad and lacks specificity.

Any Rock Altered in the Solid State from Pre-Existing Rocks