INTRO TO EARTH SCIENCE

COURSE DESCRIPTION


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WIKI

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COURSE REQUIREMENTS

 

INTRODUCTION TO EARTH SCIENCE
ESCI 121
Fall 2010
Section 0
6

DAILY OBJECTIVES
By the end of today's class, you should be able to do the following:

IGNEOUS ROCKS

w
Describe how igneous rocks may be sub-classified on the basis of their crystal size and on the basis of their mineral composition.

w List the characteristics of rocks that help identify them as being igneous.

w Explain the meaning of the following terms:  granite, basalt, plutonic, volcanic, intrusive, extrusive, mafic, intermediate, felsic.  (For extra fun, add these terms to the list: aphanitic, phaneritic).

w Explain what the crystal size of a rock reveals about
its cooling history.

w Tell what major group of minerals composes most igneous rocks, and list specific minerals found in felsic, intermediate, and mafic rocks.

w Tell which types of igneous rocks compose the bulk of continental and oceanic lithospheric plates.

w Using hand samples of igneous rocks, demonstrate that you can use crystal size (texture) and mineralogic composition to arrive at a rock name.  In class, we practiced with samples 102, 117, 124, 136, 137, 138, 139, 142, 143, 149, 152, and 157.
 
NEIU DEPARTMENT OF EARTH SCIENCE

CAREERS IN EARTH SCIENCE

AVERAGE SALARY FOR GEOSCIENTISTS:  $79,160
 

Department of Earth Science | Northeastern Illinois University

Copyright 2010 Laura L. Sanders.  Last updated October 4, 2010.