Geological strata dating

14-Nov-2019 20:20

geological strata dating-82

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Calculations gave estimate of 100 million years for the age of the Earth.In 1896 radioactivity was discovered, and it was soon learned that radioactive decay occurs at a constant rate throughout time.Age of Earth estimated from time required to cool from an initially molten state.Assumptions include, the initial temperature of the Earth when it formed, the present temperature throughout the interior of the Earth, and that there are no internal sources of heat.

Thus rocks that we now see inclined or folded have been disturbed since their original deposition.Determination of equivalence is based on: fossils present - Fossils are key indicators of relative age (life has evolved through time) and environments of deposition.

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