geologic time scale

(redirected from Geologic ages)

geologic time scale

[¦jē·ə¦läj·ik ′tīm ‚skāl]
(geology)
The relative age of various geologic periods and the absolute time intervals.
References in periodicals archive ?
Hint of a "Lost World" beneath the sea, a survivor of long-gone geologic ages, has been hauled up in a trawler's net off the east coast of South Africa: a fish of a kind supposed to have disappeared utterly from the earth 50 million years ago.
As an early (pre-NCGMP) and therefore deprecated alternative, ESRI incorporated an additional relation in which geologic ages are modeled via a relation consisting of attributes that are hierarchically organized.
3, stratigraphic names and geologic ages are simple attributes on the feature class level for a given rock unit.
Geologic ages are related to eras via relationship classes so that erroneous data entries are avoided, however, assignments of, e.
If multiple impacts formed the line, then they must have identical geologic ages, he argues.