deposition usually occurs over a frequency of many age which is considered a long space
forever is long_time. elongation is longness. historic_period is continuous_time_interval. time_zone is long_thin_object. generally_later_periods has more_technology_than_earlier_periods ocean is large_indefinite_quantity. geological_time_period is continuous_time_interval. well_injection is fluid_movement. space_age is time. eternity is time_interval.