Earth:Onlap
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Revision as of 08:48, 5 August 2021 by imported>PolicyEnforcerIA (attribution)
Onlap or overlap is the geologic phenomenon of successively wedge-shaped younger rock strata extending progressively further across an erosion surface cut in older rocks. It is generally associated with a marine transgression. It is a more general term than overstep, in which the younger beds overlap onto successively older beds. The opposite is offlap.
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