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In History / High School | 2014-11-25

Where did scientists initially get information to develop the geologic time scale?

Asked by SilviaHysom

Answer (3)

The basic principals of Uniformitarianism were enough to give geologists a sequencial history of the earth but absolute dating using isotope data from igneous rocks gathered using several different techniques (strontium/rubidium, parent/daughter isotope decay rates) and with the combination of these two geologists were able to develop the geological time scale.

Answered by mjmcgivern13 | 2024-06-10

They studied rock layers and index fossils around the world

Answered by toledoruth017 | 2024-06-12

Scientists developed the geologic time scale in the 19th century using stratigraphy and relative dating, initially placing events in sequence based on rock layers and fossil data. The introduction of absolute dating techniques in the late 1800s further refined the scale by assigning numerical ages to these layers. Today, the geologic time scale continues to evolve as new scientific discoveries are made.
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Answered by mjmcgivern13 | 2024-12-26

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