Here you can learn all about the geologic time scale.

By the early 1840s much of the geologic time scale had been developed.

The geologic time scale encompasses the history of the Earth.

At this geologic time scale, language tends to change.

The commission's most recent work is described in the 2004 geologic time scale of Gradstein et al.

An example of a stage in the Geologic time scale is the Kimmeridgian.

The geologic time scale provides evidence of some of the major events that have helped to shape our planet.

See also stratification, sedimentary rocks and the geologic time scale.

Primary, the oldest period in the Geologic time scale (obsolete)

When I say "recently," I am talking on a geologic time scale.

One genus of stromatolite very common in the geologic time scale is 'Collenia'.

Additionally, in geologic time scales, the ice caps may grow or shrink due to climate variation.

This is very old on a human time scale, but young on a geologic time scale.

On geologic time scales, climate cycles can result in cyclic vegetation changes by directly altering the physical environment.

As illustrated in the article on the geologic time scale, most periods are subdivided into smaller units called epochs.

Students will also create a scale model of the geologic time scale to describe the different eras, periods, and epochs.

In 1983, he and seveal colleagues published a new geologic time scale that is used by geologists to correlate their findings.

Prior to this time, they largely use the same terms as used in the Australian geologic time scale, and are not divided into epochs.

The geologic time scale was developed during the 19th century, based on the evidence of biologic stratigraphy and faunal succession.

The following table summarizes the major events and characteristics of the periods of time making up the geologic time scale.

The Zanclean is the lowest stage or earliest age on the geologic time scale of the Pliocene.

All lakes are temporary over geologic time scales, as they will slowly fill in with sediments or spill out of the basin containing them.

FADs are frequently used to designate segments in the Geologic time scale.

The geologic time scale was developed based on the relative ages of rock strata as determined by the early paleontologists and stratigraphers.

This might compromise later experiments aimed at detecting life on the Red Planet, and/or influence its future ecology over geologic time scales.