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Non-convex is also referred to as concave. Convex and non-convex both define the types of curvature. Convex defines the curvature that extends outwards or bulges out. On the other hand, non-convex defines a curvature that extends or bends inward. Thus, the extension of the curve is used to differentiate between the two forms. Convex and non-convex are often used as adjectives to define the entities associated with the shape or curve defined by them.
Nonconformity: an unconformity between sedimentary rock or sediment and non-sedimentary rock such as igneous or metamorphic rock. This could also protrude into overlying or underlying layers of strata, depending on the depositional factors of the environment at your site of research.ngular Unconformity: an unconformity between non-parallel strata, this is where you have overlying horizontal beds (of strata) resting on top of strata whose beds are at an angle to the horizontal (say 30 degrees).