Relative age dating vs radiometric dating Sexo chat ps3
While in the absolute dating, isotopes of carbon are used for dating fossils.The absolute dating is more precise than relative dating because it tells the exact age of the fossils.
Relative dating is based on super imposition and fossils.
Lava flows from active volcanos in Hawaii have given dates as old as 27 million years.
Radioactive material can be eroded away changed by heat and chemical reactions. When the radioactive date contradicts the relative age as determined by the fossils the fossil date is always considered to be the better value.
Example include carbon14-nitrogen, uranium-led, uranium-thorium. Relative dating instead allows for identifying the sequential order of geological events one relative to the other.
This is based on the concept that, in a normal depositionary sequence, the deepest layers are also the oldest.
Absolute dating is based on radioactive decay half lives.