Definition of offlap in English:

offlap

noun ˈɒflap

Geology

A progressive diminution in the lateral extent of sedimentary deposits in passing upwards from older to younger strata, so that each stratum leaves a portion of the underlying one exposed; a set of strata exhibiting this, typically as a result of regression of a shoreline. Contrasted with onlap.

Early 20th century; earliest use found in Amadeus William Grabau (1870–1946). From off + lap, after overlap.

nounˈɒflap

Geology

A progressive diminution in the lateral extent of sedimentary deposits in passing upwards from older to younger strata, so that each stratum leaves a portion of the underlying one exposed; a set of strata exhibiting this, typically as a result of regression of a shoreline. Contrasted with onlap.

Early 20th century; earliest use found in Amadeus William Grabau (1870–1946). From off + lap, after overlap.

词汇	offlap
释义	Definition of offlap in English: offlap noun ˈɒflap Geology A progressive diminution in the lateral extent of sedimentary deposits in passing upwards from older to younger strata, so that each stratum leaves a portion of the underlying one exposed; a set of strata exhibiting this, typically as a result of regression of a shoreline. Contrasted with onlap. Origin Early 20th century; earliest use found in Amadeus William Grabau (1870–1946). From off + lap, after overlap. Definition of offlap in US English: offlap nounˈɒflap Geology A progressive diminution in the lateral extent of sedimentary deposits in passing upwards from older to younger strata, so that each stratum leaves a portion of the underlying one exposed; a set of strata exhibiting this, typically as a result of regression of a shoreline. Contrasted with onlap. Origin Early 20th century; earliest use found in Amadeus William Grabau (1870–1946). From off + lap, after overlap.
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