Date of Award
Campus Access Master's Report
Master of Science in Geology (MS)
Administrative Home Department
Department of Geological and Mining Engineering and Sciences
John S. Gierke
Committee Member 1
Committee Member 2
Arch Rock, located on the southeast corner of Mackinac Island Michigan, is a limestone arch formed via wave erosion of Nipissing Great Lakes and is a prominent cultural site and tourist location for the Mackinac State Historic Park. Limestone is highly susceptible to weathering processes such as freeze-thaw and dissolution due to its structure and chemical composition. The purpose of this study is to identify the potential weathering processes occurring at Arch Rock, identify any areas of interest at the arch that may require mitigation efforts, suggest possible mitigation techniques and lay the foundation for further geo-technical investigation of the site. This study was conducted using photographic analysis of relative fracture size and density and giving different sections of the arch a Geological Structure Index number, comparison to both historic photographs and records from past investigations, and the development of 3D models using Agisoft Photoscan to identify large scale structures not easily identified in 2D photographs.
Javor, Cassandra M., "Assessment of the Geological Hazards Pertaining to Arch Rock, Mackinac Island, USA", Campus Access Master's Report, Michigan Technological University, 2016.
Available for download on Wednesday, July 26, 2017