Radiometric dating simplified

It is the interpretation of these chemical analyses that raises potential problems.To understand how geologists “read” the age of a rock from these chemical analyses, let’s use the analogy of an hourglass “clock” (Figure 2).

Each chemical element, such as carbon and oxygen, consists of atoms.So, for example, every carbon atom contains six protons and six electrons, but the number of neutrons in each nucleus can be six, seven, or even eight.

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