Law of Superposition

The law of superposition (or the principle of superposition) is a key axiom based on observations of natural history that is a foundational principle of sedimentary stratigraphy and so of other geology dependent natural sciences:

Sedimentary layers are deposited in a time sequence, with the oldest on the bottom and the youngest on the top.

The law was formulated in the 17th century by the Danish scientist Nicolas Steno.

Read more about Law Of Superposition:  Development of The Law of Superposition, Application of The Law of Superposition, Superposition As Modified By Archaeological Considerations

Famous quotes containing the word law:

    Our law very often reminds one of those outskirts of cities where you cannot for a long time tell how the streets come to wind about in so capricious and serpent-like a manner. At last it strikes you that they grew up, house by house, on the devious tracks of the old green lanes; and if you follow on to the existing fields, you may often find the change half complete.
    Walter Bagehot (1826–1877)