PETROGRAPHY AND LABORATORY
Principles of Igneous and Metamorphic Petrology with laboratory
Composition and physical properties of mantle and crust. Origin, chemical and physical characters of the magma. Equilibrium versus fractional crystallization and melting in silicatic systems. Mantle sources and mantle contamination. Magma differentiation. Assimilation. Crustal anatexis. Mixing, mingling. Orogenic plutonism. Geochemical behaviour of trace elements and isotopes in the evolution of magma. Magmatic series and geodynamic environment.
Metamorphic petrology. Metamorphic processes; temperature, pressure, deformation; the role of fluids. Metamorphic grade, facies, isograds. Contact metamorphism. Orogenic metamorphism. High pressure metamorphism: eclogites. Granulites and the genesis of the deep crust. Vapour-present and vapour absent partial melting; migmatites. Ocean floor metamorphism. P-T-time paths. Retrograde metamorphism. The protoliths of metamorphic rocks.
Different techniques for the microscopic identification of the main magmatic and metamorphic minerals based on their optical characters in polarized light. Description and genetic interpretation of the main microstructures. Criteria for the petrographic study of magmatic and metamorphic rocks in thin section.
Prerequisites for admission
Knowledge of the contents of the teaching of Introduction to Geology and Laboratory, Mineralogy, Chemistry and Minerals and Rocks Laboratory is required.
John D. Winter (2010) Principles of Igneous and Metamorphic Petrology, Pearson, ISBN-10: 0321592573
Laboratory practicals, please visit the website:http://ariel.ctu.unimi.it/corsi/portal/user/loginHome.asp
Deer, Howie, Zussman - An Introduction to the Rock Forming Minerals, Longman Ed.
Slides and texts available on Ariel - Laboratorio Petrografia
Assessment methods and Criteria
The exam is divided into two written tests that equally contribute to the final evaluation out of thirty.
The assessment of the acquisition of the theoretical aspects of the subject takes place through the written exposition of three topics, of which at least one focuses on the petrography of igneous rocks and one on the petrography of metamorphic rocks. The test will last about two hours and the use of texts or notes is not allowed.
The verification of the acquisition of the contents related to the Practical test with the microscope (Petrography Laboratory module): it requires the description of the mineral composition and structure and classification of two rock sections (one magmatic and one metamorphic); the duration of the test is 3 hours and only written texts and personal notes are allowed;
Any type of internet connection and the presence of mobile phones during the test is prohibited.