EOSC 221 · Introductory Petrology

Optical mineralogy and the classification and genesis of igneous, metamorphic and sedimentary rocks. [2-3-0] Prerequisite: EOSC 220.

Course Availability & Schedule

Course Syllabus

Learning Goals

Students should be able to:

  • Describe the modal mineralogy and texture of a rock in a hand specimen,
  • Use fundamental petrographic observations to identify minerals and rock textures in thin section,
  • Classify (assign complete names to) rocks, using published schemes employed by professionals,
  • Describe rock-forming processes,
  • Evaluate the petrogenesis of rocks and rock associations in a plate tectonic context.


Instructors: Lucy Porritt and Stuart Sutherland



1. Klein and Philpotts (2017). Earth Materials: Introduction to Mineralogy and Petrology (2nd Ed). Cambridge

2. Perkins and Henke (2000) Minerals in thin section, Prentice Hall

Recommended and optional:

  • Guide to Thin Section Microscopy by Michael M. Raith, Peter Raase and Jurgen Reingardt (provided electronically)
  • MacKenzie and Adams (1994) A color atlas of rocks and minerals in thin section, J. Wiley.
  • Nesse (2003) Introduction to Optical Mineralogy

Lecture Topics

Module 1 Composition, classification and structures of igneous rocks. Igneous processes.

Module 2 Composition, classification and structures of sedimentary rocks. Sedimentary processes.

Module 3 Composition, classification and structures of metamorphic rocks. Metamorphic processes.