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Age of the Earth

Published on Dec 03, 2015

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PRESENTATION OUTLINE

Geologic Time

If the Earth is about 4.6 billion years old
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Where

do we fit?
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How long is

a million seconds?
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Do people

live a billion seconds?
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A glass of water

.06% hominids show up
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Geo Laws & Principles

aging stuff
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Superposition

Older stuff deeper than younger

Original Horizontality

sediment starts flat
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uniformitariansm

things change, but prinicples don't
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cross-cut

younger stuff cuts older

inclusion

older rock can be found in younger rock
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24 hour clock

when do we show up?

What is a Significant Event

in Earth's history?
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IF 1 step = about 50 million years,

how many steps would your event be?

Now, select 10 other events

create a walking tour of Earth's history
Photo by subarcticmike