law of superposition of strata

views updated May 08 2018

law of superposition of strata (principle of superposition) Strata are deposited sequentially, so that in an undistrubed sedimentary succession each layer of rock is younger than the layer beneath it. Subsequent earth movements may overturn and invert this sequence. The law was first proposed in the 17th century by Nicolaus Steno.

A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY

law of superposition of strata

views updated May 11 2018

law of superposition of strata See faunal succession.

A Dictionary of Ecology MICHAEL ALLABY

superposition, law of

views updated May 29 2018

superposition, law of In geology, law that states that in undisturbed layers of sedimentary deposits, younger beds overlie older ones.

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law of superposition of strata

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