UNIVERSITY OF ZAGREB Faculty of Mining, Geology & Petroleum Engineering
STRUCTURAL GEOLOGY
Teacher: Dr. sc. Bruno TOMLJENOVIĆ, Assistant Prof.
Study Programme: Undergraduate Study of Geological Engineering
Year of study: 3rd; Semester: 5th; Lectures: 2hrs/week; Exercises: 1hr/week; Field work: 1 day
Course description:
LECTURES: Definitions and goals of structural geology, the role of structural geology in a modern multi disciplinary exploration in geosciences. Concept of detailed structural analysis: descriptive, kinematic and dynamic analysis. Homogeneous and non-homogeneous deformation. Coaxial and non-coaxial strain - pure shear and simple shear. Concept of incremental and finite strain ellipse and strain ellipsoid. Stress ellipsoid, resolving normal and shear stresses on Mohr stress diagrams. Deformational structures in rocks and minerals: (1) Joints and fractures – morphology, genetic classification. Tensional, compressional and shear joints – joint-face ornamentation and associated microstructures. Development of antitaxial and syntaxial veins. Relationship between major types of joints and principal stress directions. Methods of mapping of joints and shear fractures. (2) Faults – basic definitions and classifications. Fault morphology and kinemtics. Determination of slip on faults. Dynamic analysis of faulting. Transition of faults into shear zones with progressive deformation – transition from cataclastic into mylonitic rocks. (3) Folds – descriptive analysis of folds: geometric parts of folded surface, layers and multilayers, fold size, attitude, cylindricity, symmetry and style. Order of folds. Superposed folding. Kinematic analysis of folding. Orientation and distribution of joints and faults associated with folds. (4) Foliations and lineations in tectonites. Morphological classification of foliations and cleavages. Foliations (cleavages) and folds. Transposition of foliation. Boudinage – morphology, types of and mechanism of formation. The role of structural geological explorations in geology, geological engineering and mining. EXERCISES: The principle of stereographic projection of lines and planes. The use of stereographic projection in structural geology – examples. Stereographic projection of joints and faults – determination of stress directions. Stereographic projection in analysis of folds – preparation of "β" and "π" diagrams. Software for stereographic projection. Graphical analysis of fold morphology and superposed folding. Interpretation of faults and folds on seismic reflection profiles. FIELD EXCERCISES: Recognition and descriptive analysis of deformational structures in regions composed of crystalline basement (metamorphic and igneous) and in sedimentary rocks. Field data measurement and collection, recording of data in field notebooks and presentation on stereoplots. Analysis and interpretation of structural/tectonic history of the region based on collected data together with data presented on published geological maps
Exemination methods:
3 mid-term exams in written form (60% of final grade) Completion of written answers and graphical solutions of exercises (20 % of final grade) Final exam in oral form (20% of final grade). In case of absence from more then 1 mid-term exams final exam is in both written and oral form.
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Zadnja izmjena: 06.04.2007 11:46:38