overthrust

English

Etymology

Etymology tree

Proto-Indo-European *úp

Proto-Indo-European *-er

Proto-Indo-European *upér

Proto-Germanic *uber

Old English ofer-

Middle English over-

English over-

English thrust

English overthrust

From over- + thrust.

Noun

overthrust (plural overthrusts)

1. (geology, ambitransitive) A form of thrust fault from beneath a hanging wall of rock.

Verb

overthrust (third-person singular simple present overthrusts, present participle overthrusting, simple past and past participle overthrusted or overthrust)

1. (geology, intransitive) Of a body of rock: to force itself over another.

Adjective

overthrust (not comparable)

1. (geology) Belonging to earlier strata, pushed by faulting over later and higher strata.

References

Thrust fault on Wikipedia.Wikipedia