Three types of carbon occur naturally in living material: C12, C13 and C14.
Yet few people know how radiometric dating works or bother to ask what assumptions drive the conclusions. This figure wasn’t established by radiometric dating of the earth itself. Radiohalos shouldn’t exist, according to conventional wisdom!
Relative dating and radiometric dating are used to determine age of fossils and geologic features, but with different methods.
Relative dating uses observation of location within rock layers, while radiometric dating uses data from the decay of radioactive substances within an object.
Continue Reading Relative dating observes the placement of fossils and rock in layers known as strata.
Basically, fossils and rock found in lower strata are older than those found in higher strata because lower objects must have been deposited first, while higher objects were deposited last.