Review for the second quiz
The quiz will cover material from lecture, lab, and the textbook. I anticipate the quiz will take
1-2 hours for you to complete and will be followed by time for you to work on your current lab (no
lecture). The quiz is worth 50 points; two points will be automatically awarded for turning in your
course survey (just put your survey – no name required – in the envelope at the front of the class by
the time you leave class on the day of the quiz.
What you will be given or to which you will have access
Optical mineralogy texts (you may not use the texts with photomicrographs of minerals
— e.g., Deer, Howie & Zussman, Kerr or Nesse
What you will need to know for the quiz
Anything you needed to know for the first quiz that is relevant to metamorphic rocks or plate
tectonics (any cumulative knowledge I expect you to have at this point in the semester)
Types of metamorphism — regional orogenic, subduction zone, and contact metamorphism
Pressure-temperature conditions of metamorphism – what are the pressure and temperature limits of
metamorphism? How hot is too hot, etc.?
P-T paths for the different types of metamorphism (including Franciscan, Barrovian, Buchan, and
contact metamorphism)
Be able to roughly sketch metamorphic facies on a P-T diagram and label low-, intermediate-, and
high-grade rocks on that diagram; define low-, intermediate-, and high-grade metamorphism and
give examples
Be able to roughly place the aluminosilicate triple point and phase boundaries on the above P-T
diagram (kyanite, andalusite, and sillimanite)
Key metamorphic mineral assemblages for Barrovian (chlorite zone, etc.) and Franciscan-type
metamorphism (amphibolite-, blueschist-, eclogite-facies, etc.) for both pelitic and mafic rocks;
be able to identify these minerals in both hand sample and thin section
Meaning of prograde, peak, and retrograde metamorphism and how these may be recorded in a rock
Metamorphic textures (in the same sort of detail required for your hand sample and thin section
work, but not in the detail covered in your textbook)
Terms (to define and/or recognize in a rock): schist, gneiss, foliation, cleavage, porphyroblast, relict
minerals, shear sense indicators, recrystallization, deformation, solid solution, boudinage,
crenulation cleavage, pressure shadow, inclusion trails, metamorphic facies, metamorphic grade,
reaction rim, mélange
Recognize textures related to brittle and/or ductile deformation of rocks
Be able to relate metamorphic mineral growth to deformation — pre-, syn-, and post-kinematic
Be able to relate the direction of greatest compressive and least compressive (extensional) stresses to
deformation in metamorphic rocks
Understand the correct order of metamorphic reactions in P-T space (similar to what you did in your
lab) given reactions
Given mineral formulae, be able plot metamorphic mineral assemblages on ACF, AKF, or AFM
diagrams (similar to what you did in the lab), or to be able to read and interpret one of these
diagrams
What you may bring with you to the exam
One 8.5x11” sheet of paper with notes (on both sides if you wish)
Any optical mineral identification tables or texts (no photomicrographs)