The whole sequence may later be deformed and tilted by further orogenic activity.A typical case history is presented by the paleotectonic evolution of the Briançonnais realm (Swiss and French Prealps) during the Jurassic.
At the same time, percolating ground water deposits trace amounts of fluorine and other elements, such as uranium, into the bone.
it had an ape-like jaw and was found in association with the bones of extinct animals, this "Piltdown Man" was also believed to be a very ancient human.
It was popularly referred to as "the missing link" in human evolution.
A blended unconformity is a type of disconformity or nonconformity with no distinct separation plane or contact, sometimes consisting of soils, paleosols, or beds of pebbles derived from the underlying rock.
In the past, relative dating methods often were the only ones available to paleoanthropologists.