Posts Tagged ‘dating using radioactive decay’

Dating The Deep Future

November 15, 2008

Those who study the past have a number of radioactive-decay dating methods at their disposal. As we look further and further into the past , longer and longer lived radionucleides become useless for dating purposes until for dating rocks from Earth’s earliest days we require the billion year half-life of potassium-40 or the 4.5 billion year half-life of Uranium-238.

It is possible that GMs may be running campaigns so far in the future that even these become useless. This article considers whether this could happen and, if radioactive dating is needed, what alternatives might exist in those distant times. The titles of eras 5 & 6 have been borrowed from Steven Baxter’s “Deep Future” as has the relevent timescale. (more…)