Geological Time

Time machine

Geological time  | 1 | 2 | 3 | 4 | 5 | 6 | 7 |

Paleaos Website good place to do research
(odd it stops a day before we get there!?)

Methods of measuring Geological Time | 1 | 2 | 3 |

Formation of the Earth's Crust | 1 |

Inquiry q+a

Evolution | 1 | 2 | 3 |


Timeline Project evaluation

Holocene Humour
 

C14  Dating

Carbon 14 dating is based on the fact that C12/14 isotope ratios are constant in the atmosphere. During a creatures life their body contains this ratio.  After death the ratio declines predictably as the C14 deays into N14

Snow Ball Earth?

Trilobites King of the Cambrian