U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

General Information

  • Title: Cretaceous paleogeography along the eastern margin of the Western Interior Seaway, Iowa, southern Minnesota, and eastern Nebraska and South Dakota
  • Author(s): Witzke, B.J., Ludvigson, G.A., Poppe, J.R., and Ravn, R.L.
  • Publishing Organization: Society of Economic Paleontologists and Mineralogists, Rocky Mountain Section
  • Series and Number: Rocky Mountain Paleogeography Symposium, 2nd, Denver, CO, 1983, Proceedings v. 2 [p. 225-252]
  • Larger Work: Reynolds, M.W., and Dolly, E.D., eds., Mesozoic paleogeography of the west-central United States
  • Publication Date: 1983
  • Map Scale: 1:7,920,000
  • Cross Section: Yes
  • Find more maps in this area with mapView
  • Corrections to this entry?
* See base map disclaimer below

Map Preview

(Click image to enlarge)

Downloads from the NGMDB

Poor quality image? Let us know

* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.