Geologic Geologic Time ScaleTime Scale

Era Time Period

World Events

LIFE Nick-name

Pre-Cambrian

From 4.6 Billon YBP

until

570 Million YBP

"Shield" Regions

of the world

are formed

Bacteria

Algae

and

“SIMPLE" Life

forms

Age of Simple LIFE

Other Simple life formsOther Simple life forms

Era Time Period

World Events

LIFE Nick-name

Paleo-zoic

From

570 Million YBP

until

245 million YBP

OLD Mountains

form.

(Appalachians in

North America)

Pangaea forms

near end of Paleozoic

Trilobitesearly fish,

Am-phibians.

Fern forests on land

Age of Fish and Amphibians

Era Time Period

World Events

LIFE Nick-name

Age of Reptiles

Meso-zoic

From

245 Million

YBP

until

66 million YBP

Pangaeabeaks

apart at startof

Mesozoic.

Appalachians

stop build up.

Reptiles, birds and dinosaur

s newly

appear.

(Most lifeforms become more diverse

…

Trilobites extinct)

Era Time Period

World Events

LIFE Nick-name

Ceno-zoic

From

66 Million YBP

until

Today

Continents

move to

present

locations.

Rockies build.

Numerous

Ice-ages

occur.

Trees expand

, Mammal

s expand human

s appear.

Dinosaurs are extinct

Age of Mammals

We currently live in a time of ICE We currently live in a time of ICE Ages in the Cenozoic ERAAges in the Cenozoic ERA

10,000 years ago ice covered this area

We are in a time of high temperature and low ice volume….that has happened before.

When will the ice come back?When will the ice come back?Lets hope that it won’t be as fast as Lets hope that it won’t be as fast as

…………

The day after tomorrowThe day after tomorrow