kristel

What is a scientist ?

Kristel

Why studying geology ?Tsunami

Volcanoes Earthquake

Mountains Building

Kristel

What is it ?

Kristel

What is it ?

An Ammonite !

Kristel

Why in a rock ?

Kristel

Why in a rock ?

Because it’s a FOSSIL !

Kristel

Why in a rock ?

Because it’s a FOSSIL !

A what ?

Kristel

Why in a rock ?

Because it’s a FOSSIL !

A what ?The remains of a long-dead animal or plant !

Examples of other fossils

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Where did we find the ammonite?In the sea ? Desert ?

Mountains ?Mars ?

Kristel

In the Himalayas !

So, how did we find an ammonite on top of the Himalayas?

So, how did we find an ammonite on top of the Himalayas?

Marion

How long does it take?

Photo/carte de l’himalaya

ammonites

If the Earth was

one year old

instead of 4.5

billion years,

humans would

have appeared on

Earth the last

hour of December

the 31st !

kristel

Could we find another kind of rocks?

Igneous rocks Sedimentary rocks Metamorphic rocks

Sediments are squashed together

Molten rock that has cooled and hardened

Squeezed and heated rocks deep underground

Where ?Igneous rocks Sedimentary rocks Metamorphic rocks

Grand Canyon Serpentinite in SFGranite in Joshua Tree

Marion

Where are the volcanoes ?

Pacific Ocean

Atlantic Ocean

IndianOcean

Asia

N. America

S. America

Australia

Europe

Africa

Antartica

Marion

Subduction volcanoes

Marion

Marion

VolcanoesCrater

Lavas flows

Lavas flows

Ash

Marion

Explosive Volcanoes

17th May 1980 Eruption of Mont St Helens

Mont St Helens before eruption

Mont St Helens after eruption