Welcome to GLG101C Introduction to Geology
Fall 2004
Professor James Tyburczy
Department of Geological Sciences  

Chapter 1 Notes

Note: These notes are intended to give a brief overview of important topics in each chapter. They are not a substitute for reading the textbook or for actually attending class.

updated 27 Aug 2004

Here are a few fun and interesting web sites giving an overview of Geology and Plate Tectonics:



Why study geology?

Basic themes throughout the course

The Scientific Method - observation, hypothesis, repeated testing of the hypothesis, theory

Uniformitarianism - 'The present is the key to the past' -

Origin of the Solar System and of the Earth

The Solar System

Earth's interior - Planetary Differentiation

Elemental composition of the Earth

Earth's Heat Engines

Earth as a system of interacting components

Interacting Earth Systems

Plate Tectonics - theory

3 types of plate margins:

  1. Divergent margin -spreading centers - mid-ocean ridges, form new oceanic lithosphere
  2. Transform margin - plates slide by one another (ex. San Andreas)
  3. Convergent margin - for example, subduction zone -> volcanism, mountains

Geologic Time - Darth is 4.5 billion (4,500,000,000 or 4.5 x 10^9) years old. Major events in the history of the Earth


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©2004, James A. Tyburczy, Department of Geologicl Sciences, Arizona State University
If you have any questions or concerns regarding this page, please address them to jim.tyburczy@asu.edu.
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Last update 8/27/04