This is only an outline of the lecture. You will need to go to class
             to fill in the outline, although much of the relevant information is
             also in the text.  You can download a printer friendly version of
             these notes at the bottom of this page in Acrobat Format.
 
 

T           September 26      .

 FORMATION OF SOLAR SYSTEM

             When?
 

             Evidence?
 
 

             1. Solar Nebula (rotating)

 

             2. Flattened Disk (rotating)

 

             3. Planetessimals Revolving around Sun

 

             4. Planets Revolving around Sun

FORMATION OF PLANET EARTH

 

1. Accretion

 

2. The Iron Catastrophe / Core Formation

 

What happened?
 
 

Sources of Heat

 
 
 

3. Formation of Moon

 

OUR LAYERED EARTH

 

1. Compositional Layers / thickness / composition

 

-- --10-60 km --
 

-- -- 2800 km --
 

 -- -- 3500 km --

(to center)

outer core: liquid

inner core: solid
 
 

2. Differentiation of the Crust

 

 
 
 
 
 
 
 
 

3. Origin of Continents

 

 
 
 
 
 
 
 

EARTH'S ATMOSPHERE

 

1. Composition (dry)

 

2. Outgassing (Volcanism)

 

3. Sources of Water?

 

4. Photosynthesis

 

What organisms do it?
 
 

What does it produce?
 
 

When did it start?

PLATE TECTONICS

 

1. What are plates? (Lithosphere)

 

 
 
 
 
 
 
 
 

2. Why do plates move?

 

 
 
 
 
 
 
 
 

3. Why does the mantle convect?

 

 
 
 
 
 
 
 
 

4. What allows plates to move? (Asthenosphere)

 

 
 
 
 
 
 
 
 
 

5. How fast do plates move?

 

 
 
 
 
 
 
 
 
 

 6. Three kinds of plate boundaries:

 

Divergent

Convergent

Transform
 
 
 
 
 
 

THREE KINDS OF PLATE BOUNDARIES

 

1. Divergent boundaries

 
what happens?
 
 

where?
 
 

features:
 

 
 

2a. Convergent boundaries: subduction zones

 

what happens?
 
 

where?
 
 

features:
 

 
 

2b. Convergent boundaries: Continental collision

 

what happens?
 
 

 where?
 
 

features:
 

 
 

 3. Transform fault boundaries

 

what happens?
 
 

where?
 
 

features: