Economic geology of the Kittanning and Rural valley quadrangles, Pennsylvania
The sandstone (8) shows in the bed of the creek and in a ledge washed by the water, whence have come the great ... most of the concealed interval also, is probably the Clarion sandstone described in the Pennsylvania report on Armstrong County. ... thick-bedded sandstone along the road just west of the south end of the bridge at Mahoning Furnace and that on the ... Section at old mill on Cowanshannock Creek, a mile above its mouth. a Manual of Coal and its Topography, 1856, p.
| Title | : | Economic geology of the Kittanning and Rural valley quadrangles, Pennsylvania |
| Author | : | Charles Butts |
| Publisher | : | - 1906 |
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