National Geologic Map Database
General Information
- Title: Deposition of the uppermost Cambrian (Croixan) Jordan Sandstone, and the nature of the Cambrian-Ordovician boundary in the upper Mississippi Valley
- Author(s): Runkel, A.C.
- Publishing Organization: Geological Society of America
- Series and Number: Bulletin v.106, n.4 [p. 492]
- Publication Date: 1994
- Map Scale: 1:4,970,000
- Cross Section: Yes
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