Contrast the usefulness of absolute and relative dating techniques Live free sex chat room roulette
Radiometric dating, or radioactive dating as it is sometimes called, is a method used to date rocks and other objects based on the known decay rate of radioactive isotopes.
Different methods of radiometric dating can be used to estimate the age of a variety of natural and even man-made materials.
QUESTION: What is the difference between relative and absolute dating techniques?
ANSWER: In relative dating, something is determined to be older or younger than something else without determining an exact age.
Scientists can use certain types of fossils referred to as index fossils to assist in relative dating via correlation.
Index fossils are fossils that are known to only occur within a very specific age range.
These artifacts can be placed in order, but requires external information to determine which end of the series is younger or older.
Absolute dating determines the age of artifacts in terms of the number of years before the present, with reference to a fixed time scale.
The majority of the time fossils are dated using relative dating techniques.
However, rocks and other objects in nature do not give off such obvious clues about how long they have been around.
So, we rely on radiometric dating to calculate their ages.
According to the laws of superposition, a strategic layer that is higher has been deposited more recently.
The oldest strata are at the bottom of the sequence.