Looking for updated information on the Windrow Formation of Minnesota.
Age of Formation.
Formation correlates with what other formations.
Environmental deposition of the formation.
Any fossils of note found.
Thank you.
References:
T. THWAITES ; W. H. TWENHOFEL, 01 Jun 1921 “Windrow formation: An upland gravel formation of the driftless and adjacent areas of the upper Mississippi Valley” GSA Bulletin (1921) 32 (2): 293-314. https://doi.org/10.1130/GSAB-32-293
George W. Andrews. 1958 “Windrow Formation of Upper Mississippi Valley Region a Sedimentary and Stratigraphic Study”. The Journal of Geology Vol. 66, No. 6 (Nov., 1958), pp. 597-624