Tectonic Imbrication and Foredeep Development in the Penokean Orogen, East-Central Minnesota: An Interpretation Based on Regional Geophysics and the Results of Test-Drilling. The Penokean Orogeny in Minnesota and Upper Michigan: A Comparison of Structural Geology

摘要

The report contains two separate studies. The topics discussed are the following. Part One: Tectonic conclusions and stratigraphic implications; Regional considerations--Possible equivalence of Niagara fault zone and Malmo discontinuity, Correlation of stratigraphic sequences north of Niagara-Malmo zone-Possibilities and problems. Part Two: General tectonic setting; Comparison of structural geology--Descriptive structural geology in Minnesota terranes, Strain analysis in Minnesota terranes, Comparative structural geology in Minnesota and Michigan.