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The geological time scale

The Geological Time Scale serves as a guide to the major eras and periods of the earth's history.

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The geological time scale

  1. 1. Geological Time ScaleGeological Time Scale By Prof. Liwayway Memije-Cruz
  2. 2. Arthur HolmesArthur Holmes  He was  a  British  geologist  who  made  two  major  contributions  to  the  understanding  of  geology.  He  pioneered  the  use  of  radioactive  dating  of  minerals  and  was  the  first  earth scientist to grasp the  mechanical  and  thermal  implications  of  mantle  convection,  which  led  eventually  to  the  acceptance  of plate  tectonics.
  3. 3. How the earth looks like How the earth looks like  now?now?
  4. 4. What is GTS?What is GTS? The geological time scale (GTS) is a system of chronological measurement that relates stratigraphy to time. Stratigraphy is about the geological and archaeological layers that make up an archaeological deposit.
  5. 5. Basis in determining GTS:Basis in determining GTS: According to events which took place in each period.
  6. 6. Based on the geological rock record, which includes erosion, mountain building and other geological events.
  7. 7. Use fossils evidences.