Differentiate between relative dating and radiometric dating zellwegger dating

Suppose a dinosaur fossil has been found in the beds of an ancient delta (the mouth of a river leading to the sea).

differentiate between relative dating and radiometric dating-9

Radiocarbon dating is one such type of radiometric dating.

The Age of Dinosaurs was so many millions of years ago that it is very difficult to date exactly.

In an undisturbed sequence of rocks, such as in a cliff face, it is easy to get a rough idea of the ages of the individual strata – the oldest lies at the bottom and the youngest lies at the top.

This is because new sediments are always laid down on top of sediments that have already been deposited.

Scientists use two kinds of dating techniques to work out the age of rocks and fossils. This considers the positions of the different rocks in sequence (in relation to each other) and the different types of fossil that are found in them.

The second method is called absolute dating and is done by analysing the amount of radioactive decay in the minerals of the rocks.

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. 1979, 1986 © Harper Collins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cite This Source (rā'dē-ō-mět'rĭk) A method for determining the age of an object based on the concentration of a particular radioactive isotope contained within it.

For inorganic materials, such as rocks containing the radioactive isotope rubidium, the amount of the isotope in the object is compared to the amount of the isotope's decay products (in this case strontium).

There are three main assumptions that must be made to accept radiometric dating methods.

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