Department of Earth Science |Northeastern Illinois University

INTRODUCTION TO EARTH SCIENCE
ESCI 121
Section 05
Fall 2008

METAMORPHIC ROCKS, continued
 
w Metamorphic Rock-Forming Minerals (Review): Using this list of common metamorphic rock-forming minerals, tell how each is likely to play a part in forming a metamorphic rock.
 
           u calcite                
           u quartz    
           u feldspar (both plagioclase and potassium feldspar--also called orthoclase)
           u clays (we do not have this in our kit boxes)   
           u the mica minerals: for example, biotite and muscovite  
           u the ferromagnesian minerals: for example, amphibole (also called hornblende)

w For the minerals listed above, find examples of them in your mineral kit. 

IGNEOUS ROCKS (Review)

w Examine the igneous rocks in the rock box.  Classify and describe them based on their composition and texture.  Show that you can describe the following rocks:

            basalt                andesite          rhyolite       
            gabbro              diorite              granite       
            obsidian           pumice            scoria

THE ROCK CYCLE

w Put it all together!  Using rock samples and chalk, create a concept map that demonstrates your understanding of the processes involved in the rock cycle.