Download Physical Geology 1330

Physical Geology 1330
116-S&R 1
Lecture 2
Dr. Mike Murphy
[email protected]
333-S&R-1
www.uh.edu/~mamurph2/homepage.html
Today’s Outline
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Origin of the Earth
Internal Structure of the Earth
Plate Tectonics
The Rock Cycle
Nebular Hypothesis –
A.
B.
C.
D.
Fig. 1.5 P&S
Fig. 1.7 P&S
Internal Structure of the Earth –
Compositional layers
Crust
Mantle
Core
Mechanical Layers –
The strength of Earth’s materials is a function of
1.
2.
3.
4.
Lithosphere Asthenosphere Moho – Mohorovic Discontinuity
Mantle –
Core -
Uniformitarianism -
Plate Tectonics
1. Defined as the set of ideas explaining the observed motion of the Earth’s
lithosphere through the mechanism of subduction and seafloor spreading, which
in turn, generates the Earth’s major features, including continents and ocean
basins.
Three types of plate boundaries:
1. Divergent
2. Convergent
3. Transform
Divergent plate boundaries
Characteristics:
Example
Convergent plate boundaries
Characteristics:
Example
Transform plate boundaries
Characteristics:
Example:
Three Rock Types
Igneous –
Sedimentary –
Metamorphic –
The Rock Cycle –