A cause for the Quaternary

Author / Creator

Davis, Chester Arthur, 1917-

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Physical

Summary

Geology, evidence of a comet's collision with the Earth: ending the Tertiary period and beginning the Quaternary period; causing vast geological changes; movement of "drift"; and causes for worldwi...

Geology, evidence of a comet's collision with the Earth: ending the Tertiary period and beginning the Quaternary period; causing vast geological changes; movement of "drift"; and causes for worldwide climate changes.

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