Radiometric dating worksheet key
For decades, the biologists have boldly proclaimed that, whereas we cannot observe today one type of creature evolving into a totally different type of creature, “Time is the hero of the plot. No one even bothers to ask what assumptions drive the conclusions.
So let’s take a closer look at these methods and see how reliable they really are.
Note that the carbon-14 (or radiocarbon) method is not used to date rocks, because most rocks do not contain carbon.
Unlike radiocarbon (Sm)—are not being formed today within the earth, as far as we know.
These parent radioisotopes change into daughter lead-206, lead-207, argon-40, strontium-87, and neodymium-143 isotopes, respectively.
In some cases, the isotopes eject particles, primarily neutrons and protons.The daughter atoms are not lesser in quality than the parent atoms from which they were produced.Both are complete atoms in every sense of the word.They must find rocks that contain these parent radioisotopes, even if they are only present in minute amounts.Most often, this is a rock body, or unit, which has formed from the cooling of molten rock material (called magma).