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Crazy boy [7]
3 years ago
15

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

History
2 answers:
const2013 [10]3 years ago
8 0
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.
ivann1987 [24]3 years ago
6 0

They studied rock layers and index fossils around the world

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