Thanksgiving Break!!!

HW for Thanksgiving Break

1. Smile
2. Appreciate
3. Be thankful and share this thankfulness with your family, your friends, yourself

4. Geologic Timeline Assignment


How can you show geologic time and the space between the different time periods (listed below)? As a class we showed this through our 4.5 meter string. One millimeter represented 1,000,000 years. In your project you need to represent these time periods through some forms of measurement (what is your scale going to be?). The one thing that can be different with your project is that you can skip the Precambrian era if you so choose. We observed in our activity that the precambrian era was SOOOO long that there was hardly any space to show some of the more recent time periods. Please look at the rubric as you do this. If you need a new rubric let me know and I can email it out to you. This is due Monday when you return from Thanksgiving. Please bring a signed note saying it is complete. You do not need to bring into class until later that week when we have the space to store them and talk about them.


Period Number of years ago (before present)
Precambrian 4.5 billion-540 million
Cambrian 540 – 490 million
Ordovician 490 – 443 million
Silurian 443 – 417 million
Devonian 417 – 354 million
Mississippian 354 – 325 million
Pennsylvanian 325 – 290 million
Permian 290 – 225 million
Triassic 225 – 200 million
Jurassic 200 – 136 million
Cretaceous 136 – 65 million
Paleocene 65 – 55 million
Eocene 55 – 37 million
Oligocene 37 – 26 million
Miocene 26 – 5 million
Pliocene 5 – 2 million
Pleistocene 1.8 million – 10 thousand
Holocene 10 thousand until present