To comprehend this huge span of geologic time

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Presentation transcript:

To comprehend this huge span of geologic time Imagine a timeline 4,560 km long

Imagine a timeline 4,560 km long It would stretch 2800 miles! It would go from Seattle to Washington D.C! Each kilometer would be equal to 1 million year of the Earth’s history

Events as you drive 3850 my – oldest rock 3500 my oldest fossil (cyanobacteria) 1100 my oldest evidence of complex life (worm?) 540 my Cambrian explosion

Imagine a time line as a trip cross-country 1100 3500 3850 540 Map of U.S. with these km marked 3850 first evidence if life (Detroit) 3500 first fossil (Chicago) 1100 First complex life (somewhere in Montana) 540 first aboundant life in rock record (WA-ID border) 250 million largest mass extinction (Ellensburg) 65 millions –Dinosaurs go extinct (North Bend)

The trip continues… You’ve been driving for nearly two days without stopping. You’ve finally entered Washington State. You start to see clams and other seafood you recognize (540 m.y.) About Ellensburg you start to see dinosaurs (250 m.y.) They die off at Snoqualmie pass – you are 45 minutes from arriving! It isnt until you hit the outskirts of town that you see abundant mammals, grasses and flowering plants

The trip continues… 65 540 The trip continues (WA map) 250

Getting there! 30 km ~ Turn S on I-5 from I-90 1.8 km ~ Exit I-5 .04 km (campus entrance) First Humans 0.002 km (2 m or 6 feet) ~ Julius Caesar assassinated 20 years = 2 cm Your perspective on this whole thing