Definition, Meaning & Synonyms
law-of-superposition
Noun
/lɔː əv ˈsuːpərpəˌzɪʃən/
Definition
The law of superposition is a principle used in geology and archaeology which states that in any undisturbed sequence of sedimentary rocks, the oldest layers are at the bottom and the youngest layers are at the top.
Examples
- According to the law of superposition, the sedimentary rock layers found in a canyon were formed over millions of years.
- In an archaeological dig, researchers applied the law of superposition to date artifacts found in different layers of soil.
- Geologists used the law of superposition to confirm the age of the fossil beds in the area.
Meaning
The law of superposition helps scientists to determine the relative ages of rock layers by observing their order of deposition.
Synonyms
- Principle of superposition
- Geological layering law
- Stratigraphic law
