geologic time scale

(redirected from Stratigraphic time scale)

geologic time scale

[¦jē·ə¦läj·ik ′tīm ‚skāl]
(geology)
The relative age of various geologic periods and the absolute time intervals.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The standard chronological yardstickis the stratigraphic time scale. Developed in the 19th century, this time scale divides the rock record into units that are classified according to the fossils they contain and, to a lesser degree, their rock type.
Geologists using the traditional stratigraphic time scale can only roughly correlate the ages of rocks from different parts of the globe, because the fossils from these different places are rarely identical, given the great variations among the climates in which animals and plants live.