%0 Book Section %B Quaternary Glaciation of the Great Lakes Region: Process, Landforms, Sediments, and Chronology %D 2018 %T Glaciotectonic deformation along the Valparaiso Upland in southwest Michigan %A B. Bird %A A. E. Kehew %A A. L. Kozlowski %X

Glaciotectonic deformation of glacigenic deposits in southwestern Michigan is described and analyzed to determine the source of stress of these strained sediments, which manifests as overturned folds and other deformation similar to shallow crustal décollements. The succession is exposed in 11 aggregate mining operations along the Valparaiso Upland, in portions of Berrien, Van Buren, and Allegan Counties in southwest Michigan. Observed deformation includes a complex array of folds, faults, and thrust features as much as 5 m below the surface exposure of the pit face, consistent with horizontal compressional stresses that were generally aligned with ice flow. Fabric measurement of elongated clasts in the surficial till indicates ice flow from northwest to southeast across the area and parallel to drumlins in the area. Stratigraphically, the area is dominated by fine, lacustrine deposits with coarse sand and gravel capped by the Saugatuck Till during the last glaciation. Sediment grain size, pore-water pressure fluctuations, and topographic relief are interpreted to be responsible for the deformation observed as the Lake Michigan Lobe overrode a proglacial lake basin, including fans and deltas, as it advanced eastward to the Kalamazoo moraine. The fine texture and fabric of the lacustrine sediment package restricted the flow of subglacial water and caused abrupt local increases of pore-water pressure and concomitant coupling and decoupling of the bed-substrate interface. Advancing ice deformed sediments in two stages: (1) proglacially along a décollement at the ice margin, and then (2) subglacially as ice overrode the sediments.

%B Quaternary Glaciation of the Great Lakes Region: Process, Landforms, Sediments, and Chronology %I Geological Society of America %C Boulder, Colorado %G eng %U https://pubs.geoscienceworld.org/books/book/2055/chapter/113619031/glaciotectonic-deformation-along-the-valparaiso?redirectedFrom=PDF %0 Map %D 2017 %T Surficial Geology of the Owasco Quadrangle, Cayuga and Onondaga Counties, New York %A B. Bird %A A. L. Kozlowski %A Pair, D. L. %B Map and Chart Series %7 96 %I New York State Museum %C Albany, New York %@ 978-1-55557-318-8 %G eng %U http://www.nysm.nysed.gov/file/4477/ %0 Map %D 2016 %T Late Quaternary Reconstruction of Lake Iroquois in the Ontario Basin of New York %A B. Bird %A A. L. Kozlowski %B Map & Chart Series 80 %I New York State Museum %C Albany, New York %G eng %U http://www.nysm.nysed.gov/file/2851/ %0 Map %D 2016 %T Surficial Geology of the Moravia Quadrangle, Cayuga County, New York %A B. Bird %A A. L. Kozlowski %B Map & Chart Series 89 %I New York State Museum %C Albany, New York %G eng %U http://www.nysm.nysed.gov/file/4548/ %0 Map %D 2016 %T Surficial Geology of the Sempronius Quadrangle, Cayuga County, New York %A B. Bird %A A. L. Kozlowski %B Map & Chart Series 90 %I New York State Museum %C Albany, New York %G eng %U http://www.nysm.nysed.gov/file/4500/ %0 Map %D 2015 %T Surficial Geology of the Auburn Quadrangle, Cayuga County, New York %A B. Bird %A A. L. Kozlowski %B Map & Chart Series 82 %I New York State Museum %C Albany, New York %G eng %U http://www.nysm.nysed.gov/file/4485/ %0 Map %D 2015 %T Surficial Geology of the Fair Haven Quadrangle, Cayuga and Wayne County, New York %A B. Bird %A A. L. Kozlowski %B Map & Chart Series 83 %I New York State Museum %C Albany, New York %G eng %U http://www.nysm.nysed.gov/file/4496/ %0 Map %D 2015 %T Surficial Geology of the Weedsport Quadrangle, Cayuga County, New York %A B. Bird %A A. L. Kozlowski %B Map & Chart Series 84 %I New York State Museum %C Albany, New York %G eng %U http://www.nysm.nysed.gov/file/4498/ %0 Map %D 2014 %T Surficial Geology of the Lyons Quadrangle, Wayne County, New York %A B. Bird %A A. L. Kozlowski %B Map & Chart Series 79 %I New York State Museum %C Albany, New York %G eng %U http://www.nysm.nysed.gov/file/4452/ %0 Map %D 2011 %T Surficial Geology of the Victory Quadrangle, New York %A B. Bird %A A. L. Kozlowski %B Map & Chart Series %7 76 %I New York State Museum %C Albany, New York %G eng %U http://www.nysm.nysed.gov/file/4459/ %0 Map %D 2010 %T Surficial Geology of the Seneca Falls Quadrangle, New York %A B. Bird %A A. L. Kozlowski %B Map & Chart Series %7 69 %I New York State Museum %C Albany, New York %G eng %U http://www.nysm.nysed.gov/file/2833/