Spatial Coverage: United States / Temporal Coverage: From 280 to 310 million years ago - Yale University Library GeoBlacklight Search Results

Start Over Spatial Coverage United States Temporal Coverage From 280 to 310 million years ago

1. The lower Pennsylvanian unconformity in the central Appalachian Basin [cartographic material]

1999. 2002-06-01T04:00:00Z. 2016-07-16T21:16:14Z. Geological Survey (U.S.). U.S. Geological Survey ; For sale by U.S. Geological Survey, Information Services. English. cartographic image. Public. Appalachian Basin, United States, and Appalachian Basin. Pennsylvanian and From 280 to 310 million years ago.