Loyalhanna limestone resting on sandstone of the Pocono formation Allegripus. Blair County, Pennsylvania. 1904.
Dates
Date Taken
1904
Summary
Loyalhanna limestone resting on sandstone of the Pocono formation Allegripus, Blair County, Pennsylvania. 1904. Plate 7-A in US. Geological Survey. Bulletin 249. 1905.
Summary
Loyalhanna limestone resting on sandstone of the Pocono formation Allegripus, Blair County, Pennsylvania. 1904. Plate 7-A in US. Geological Survey. Bulletin 249. 1905.
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