Defining the Sheldon Creek Formation, a Middle Wisconsinan (MIS 3) till in Iowa, USA

• Published in: Journal of Quaternary Science
• Main Authors: Tassier‐Surine, STEPHANIE A., Kerr, PHILLIP J., Kilgore, SUSAN M., Cramer, BRADLEY D.
• Other Authors: U.S. Geological Survey
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2024
• Subjects: Ice Sheet
• Online Access: http://dx.doi.org/10.1002/jqs.3627; https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3627

ABSTRACT A pre‐Late Wisconsinan, post‐Illinoian, till sheet has long been recognized in north‐central Iowa, but has not been formally recognized or defined until now. Early researchers referred to these deposits as the ‘Tazewell’, and the term ‘Sheldon Creek’ was more recently used informally by the...