There are no drumlin landforms in Iowa. Yet this AI-written paper reports drumlins are "dotted" around the state. Ouch. Tim Kemmis brought this online paper to my attention, partly because the FAQ reference at the end of the paper doesn't actually exist either. Neither George Hallberg or Tim Kemmis worked at the Iowa Geological Survey in 1994 (the referenced date of the non-existing research).
https://www.numberanalytics.com/blog/uncovering-iowas-drumlin-secrets#fnref:1
The title image is a bedrock exposure without even an apparent residual soil cover, let alone any type of glacial feature.
My only theory about the "purpose" of the paper is to promote the mapping link contained within the article. -Dan.
And and all theories are welcome.
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