geological : Idioms & Phrases

• noun use of chemical analysis to estimate the age of geological specimens
  dating.
  

WordNet

• noun a major division of geological time; an era is usually divided into two or more periods
  era.
  

WordNet

• noun (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other
  fault; break; faulting; fracture; shift.
  
  • they built it right over a geological fault
  • he studied the faulting of the earth's crust

WordNet

• noun (geology) the geological features of the earth
  formation.
  

WordNet

• noun a layer of rock with a particular composition (especially of fossils); for dating the stratum
  

WordNet

• noun a unit of geological time during which a system of rocks formed
  period.
  
  • ganoid fishes swarmed during the earlier geological periods

WordNet

• noun a natural phenomenon involving the structure or composition of the earth
  

WordNet

• noun (geology) a natural process whereby geological features are modified
  geologic process.
  

WordNet

• noun the time of the physical formation and development of the earth (especially prior to human history)
  geologic time.
  

WordNet

Mi`cro-ge`o*log"ic*al adjective

Definitions

1. Of or pertaining to micro-geology.

Webster 1913