BOWEN’S REACTION SERIES eLAB
DIRECTIONS: GO TO WWW.MAGNER.WEEBLY.COM AND FIND THE TAB THAT SAYS
GEOLOGY. THERE SHOULD BE A TAB FOR ASSIGNMENTS. CLICK THAT AND FIND
THE BOWEN’S REACTION SERIES. TODAY YOU WILL BE EXPLORING THE
FORMATION OF IGNEOUS ROCKS. YOU MAY WANT TO OPEN UP AN ADDITIONAL
BROWSER, AS YOU WILL DO SOME SIMPLE SEARCHING. HAPPY HUNTING!
A. IMAGE SEARCH
1. Perform a google image search for ‘granite’. How many different colors come up? WHY do you think there are so
many types of ‘granite’?
2. Perform a google image search for ‘igneous rock’. What colors/images do you see? WHAT do you think determines
the form and composition of igneous rocks?
B. BOWEN’S REACTION SERIES.
1. Go back to our page. Click on the tab which says “Bowen’s Reaction Series”.
Read. Click on words.
Read some more.
2. ANSWER THE FOLLOWING:
a. Who was Bowen, and what did he and fellow scientists find out?
b. What is Fractional Crystallization?
c. What are the first minerals to form out of magma? What are the last? WHY?
3. Sketch/Label BOWEN’s Reaction Series Here (if you haven’t completed it in your outline):
C. MAGMA CRYSTALLIZATION.
1.
Go to our site and select the assignment tab which says “Magma Crystallization”.
2. Take a moment to familiarize yourself with the webpage. Play around for a few moments.
3. Answer the following:
a.
What is the difference between the terms MAFIC and FELSIC is? Hint: Slider.
D. EXPERIMENT
1. RESTART THE EXPERIMENT. YOU’LL BE RUNNING THREE SCENARIOS. MAKE SURE THAT YOU’VE SELECTED THE
VARIABLES INDICATED.
RECORD
Felsic, 1˚C/Month, 2 min.
% magma
% olivine
Ultramafic, 1˚C/Month, 2 min.
% magma
% olivine
MAFIC, 1˚C/Month, 2 min.
% magma
% olivine
% pyroxene
% amphibole
% biotite
% pyroxene
% amphibole
% plagioclase
% K-feldspar
% plagioclase
% K-feldspar
%
%
%
%
% muscovite
% muscovite
% quartz
% quartz
% biotite
pyroxene
amphibole
biotite
plagioclase
% K-feldspar
% muscovite
% quartz
Observations
Observations
Most Abundant Mineral:
Most Abundant Mineral:
Most Abundant Mineral:
Least Abundant Mineral:
Least Abundant Mineral:
Least Abundant Mineral:
Overall Color:
Overall Color:
Overall Color:
Two More Observations:
Two More Observations:
Two More Observations:
Observations
E. WRAP UP AND CONCLUSION.
On a separate piece of paper, revisit the two initial questions that you answered at the
beginning of this exercise. What would you change about your answers, and why? This should be no
less than half a page (two paragraphs). Your answer should include a discussion of what you learned,
and use examples from the lab.