CHAPTER 9: TIME AND GEOLOGY
There are two ways of discussing geologic time:
1. By inference i.e., relative time
Relative dating placing rocks in their proper sequence of formation which formed
first, second, third, and so on
o Cannot tell us how long ago
CHAPTER 6: WEATHERING AND SOIL
See it at the surface of the Earth with the loosening up and destruction of rocks
Very slow but devastating biological weathering
o Freezing & thawing of
Is it quartzite or marble?
- Marble fizzes
Is it calcite or halite?
- Calcite has rhombic cleavage. Calcite fizzes.
Is it limestone or chert?
- Limestone fizzes. Chert is VERY hard.
Is it pyroxene or olivine?
- Olivine is light green. Pyro
50 questions; similar to last test
1. Structure & tectonics
a. Shields, platforms and fold mountain belts
b. Shields- old metamorphic rock surfaces
c. Platform (in gray)- sedimentary rocks
2. Stress & Strain
a. Stress- a force
b. Strain: a reaction to str
Two cleavage directions almost 90* to each other
Heavy for its size
Black sheets with one excellent cleavage
Rhombic cleavage, fizzes in acid
Silver-metallic, cubic cleavage, heavy
Soccer ball-like crystal, sc
Understanding the Earth Geology 10113
Instructor: Helge Alsleben
In order to do well on the exam, you should know the answers to the following questions or
should know what was covered on certain topics listed below.
Review for Lecture Topic 8: Volcanoes
UNDERSTANDING THE EARTH GEOLOGY 10113
FINAL EXAM STUDY GUIDE
INSTRUCTOR: HELGE ALSLEBEN
Review for Lecture Topic 1: Science and the Scientific Method (Textbook Ch. 1)
What is the goal of science and scientific studies? (p. 9)
o To discover the underlying