John Woodmorappe is the pen name of a popular young earth creationist author (Jan Peczkis) who has published prolifically in mainstream and creationist journals. He has an M.A. in geology and a B.A. in biology, from a midwestern US state university (Northeastern Illinois University) and is a science educator by profession.
He is perhaps best known for his work in the field of Biblical flood geology, which he published under the pseudonym. He has pointed out flaws in radiometric dating methods, and has provided evidence to support the feasibility of the Biblical narrative of Noah's ark.