NATS 1750 Lecture Notes - Lecture 10: Deuterium, Radiometric Dating, Half-Life
29 Aug 2018
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Document Summary
One key thing we need to do in geology and studying earth is to understand how old things are. Can look at age in two different ways: Relative dating how old are things relative to one another; in this one you might not know the exact age but you can put things in order (i. e. youngest, middle, oldest) Absolute age how many years old something actually is; a range of time when something is to have happened. The structure and composition of the rock itself can give us this information through information like the relative position of layers, presence of fossils and radioactive dating (3 different ways to figure out how old something is) Different rocks form at different times in different ways, but they are often found mixed together. Science does work on the premise that the laws of physics, chemistry etc. are uniform they do not change with time or location.
