Structural geology of the Baraboo District: An introduction

Stephen Marshak, M. Scott Wilkerson, Joshua DeFrates

Research output: Chapter in Book/Report/Conference proceedingChapter


A fi eld trip to the Baraboo District provides an amazing opportunity to teach (or learn) many important aspects of structural geology. For example, students can defi ne 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 signifi cance of these structures. Students will leave Baraboo with a clear image of how progressive crustal shortening can be accommodated under lower-greenschist conditions.

Original languageEnglish (US)
Title of host publicationGeology of the Baraboo, Wisconsin, Area
EditorsRichard A. Davis, Robert H. Dott, Ian W.D. Dalziel
PublisherGeological Society of America
Number of pages24
ISBN (Electronic)9780813700434
StatePublished - 2016

Publication series

NameGSA Field Guides

ASJC Scopus subject areas

  • Geology
  • Earth-Surface Processes
  • Stratigraphy
  • Palaeontology


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