Pennsylvania Geological Survey - Historical Photographs

Active Filters:
  • Location Covered = Mifflin
  • Original Format = Photographs
  • Date = 1934-06-22

About This Collection

This collection includes photographs from the Pennsylvania Geological Survey Historical Photographs Collection.
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Contact of Don and Do
Contact of Don and Do
Stratigraphy
Contact of Don and Do, a disconformity, at hammer. Basal Don here is black shale. A few inches of same at bottom contains reworked sand grains from underlying Do. On Pennsylvania Railroad (PRR) east of Newton Hamilton.
Contact of Don and Do, a disconformity at hammer
Contact of Don and Do, a disconformity at hammer
Stratigraphy
Contact of Don and Do, a disconformity at hammer. On Pennsylvania Railroad east of Newton Hamilton
Lower part of Don where formation is dominantly black shale
Lower part of Don where formation is dominantly black shale
Stratigraphy
Lower part of Don where formation is dominantly black shale. On Pennsylvania Railroad east of Newton Hamilton
Upper part of Don where formation is dominantly limestone
Upper part of Don where formation is dominantly limestone
Stratigraphy
Upper part of Don where formation is dominantly limestone. On Pennsylvania Railroad east of Newton Hamilton