The Key to Geologic Dating - Understanding Initial Isotope Composition in Rocks

This course explains how isotope behavior during rock formation affects radiometric dating, with attention to resetting, mineral and isotope selection, and ways to account for initial daughter isotopes. It also discusses methods such as isochrons and multiple samples for checking age estimates.

Syllabus

What is an isotope?
How radiometric dating works
What rocks can be radiometrically dated?
What does ‘resetting’ mean?
How ‘resetting’ works
Not all isotope systems ‘reset’
Different ‘resetting’ temperatures
Isotope + mineral selection is key
Problem w/initial daughter isotopes
Mineral/isotope selection helps minimize this
Loss/gain models helps minimize this
Isochrons helps minimize this
Multiple samples helps minimize this
Why daughter isotopes are ‘rejected’ during formation
Where do all the daughter isotopes go?
Correcting’ isotope data
Reliability of peer-reviewed journals
Repetition also helps