GLY 624 Advanced structural geology Course description: This is a 3 credit course on the theory, principles and application of structural geology. Prerequisite: GLY 420G or equivalent. The textbook Analysis of Geologic Structures by Price and Cosgrove is optional but will be referred to during the course. Other texts will be referred to and these are on reserve in the Pirtle Library:; An outline of structural geology by Hobbs Means and Williams; Stress and Strain by Means; Principles of structural geology by Suppe; The Geology of Earthquakes by Yeats, Sieh and Allen. Lecture: TR : 12:30- 1:45 PM Instructor: Kieran O’Hara Office: 111/112 Slone e-mail: email@example.com office hrs: TR 2-3 Course organization: Early in the semester there will be 2 lectures per week. Several take-home assignments will also be given during this part of the course. Later on in the semester, more time will be spent on student presentations in class, based on written assignments and on a field project at Camp Nelson. Course objectives: My main interest in structural geology is in understanding geologic and petrologic processes involved in the upper and lower crust, rather than description of geologic structures or studying specific field areas because they exist. The problem to be solved should determine the field area, rather than the converse. This course will therefore emphasize mechanisms and processes with the goal of understanding fundamental principles. Grade: midterm test: 20 % final test: 20 % take-home assignments 20% term paper (including oral presentation) 20% field project (including oral presentation) 20% Tentative lecture topics Practical assignments strain stress models of continental crust brittle behavior plastic behavior fault mechanics geology of earthquakes folds small scale structures fluid-rock interaction strain measurement shear zone strain strength of crust microtextures mylonites pseudotachylytes fluid inclusions stereonets WRITING ASSIGNMENTS This morning I took out a coma and this afternoon I put it back in- Oscar Wilde Mini-paper (due during semester) The writing assignments consist of one mini-paper and a paper to accompany the field project, both of which will be the basis of two 15 minute in-class presentations by students. The class as a whole will have input on the quality of the in-class oral presentations, which will be furnished to the presenter, and will be part of the course grade. I will edit and comment on a first draft of the mini-paper and ask that you revise accordingly (due dates for first draft will be set later). Final drafts of the mini-paper and field project are due before the final exam. All writing assignments will be graded with the following criteria in mind: clarity and organization, scientific content (e.g. supporting evidence, clarity and relevance of diagrams; adequate and accessible references), lack of repetition in text, grammar, spelling etc. Papers which make interesting syntheses or draw new conclusions or identify new problems/ avenues of research will be ranked higher. Ideas for suitable topics can be found in recent abstract meetings (e.g. EOS or GSA). These topics may be related to your thesis proposal, but should not be a repetition of that proposal. My research interests combine petrology, geochemistry and structural geology, so that any topics broadly within these areas are fine. The format of the mini-paper should be that of a current Geology paper- with an abstract, introduction, main body and conclusions, figures, and references. Papers should be approximately 10 pages in length, double spaced, excluding figures. Field Project (map and paper due end of term) Camp Nelson. This outcrop is already familiar to some of you:- Camp Nelson on rte 27 south of Nicholasville. Here the Kentucky river fault is exposed, together with a kink fold, fault breccia, numerous types of faults of different orientations, veins, joints, slickenlines, minor Pb-fluorite mineralization et cetra. The structural history of this outcrop is unclear and still remains to be determined. Interesting questions are 1) was this outcrop the site of seismicity or can the structural features be explained by non-seismic processes, 2) is the major fault related to the kink fold, and if so how; if not, what is their relative age?. Can the features of the outcrop be explained by a single stress regime (i.e. strike slip, normal, thrust etc).? The first and basic part of the field project is to produce a detailed geologic map of the outcrop at an appropriate scale. The second part is to deduce and explain the kinematic and structural history of the area (also one of the in-class presentations). The geologic map should therefore be accompanied by text explaining your deductions on the history of the outcrop, as far as possible, similar in extent and detail to the mini-paper text described above. Although the field project is due at the end of the semester, an oral presentation based on this project will be made before the semester ends, and the dates of these presentations will be scheduled.