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A field trip to the Baraboo District provides an amazing opportunity to teach (or learn) many important aspects of structural geology. For example, students can define the regional-scale shape of the Proterozoic-age south-verging Baraboo Syncline from data on bedding attitudes and facing indicators and then can compare this shape to a digital elevation model of the district to see relationships between the dip of a stratigraphic unit and the width of its outcrop belt. Key outcrops of the Baraboo District, which we describe in detail, allow students to identify and sketch mesoscopic tectonic structures (joints, spaced and phyllitic cleavage, veins, faults, slip lineations, parasitic folds, boudinage, crenulation cleavage, and kink folds) and to interpret the kinematic significance of these structures. Students will leave Baraboo with a clear image of how progressive crustal shortening can be accommodated under lower-greenschist conditions.

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