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Allegheny river analysis anticlinal Armstrong county axis Beaver Bend anticlinal Brookville Brookville coal charcoal furnace Chunk red shale Clarion coal Clarion county Clarion group Clarion Lower coal Clarion river coal bank coal bed coal measures coke Conglomerate measures east Edenburg Fairmount farm Farmington township feet beneath feet thick Ferriferous limestone fifty feet Fireclay floor Fixed carbon Forest county four feet Freeport Lower coal Freeport Upper coal grey hard hill Homewood sandstone horizon inches iron Kittanning Lower coal Kittanning Middle coal Kittanning Upper coal Lawsonham lies lime Limestone township Mauch Chunk red McCreath Mercer mile Mill Creek Millerstown nearly outcrop Perry township Piney Porter township pyrites quarry railroad Red Bank Red Bank creek Red rock sandy shale Shale roof Shippenville shown by Fig shows slaty Sligo soft stream Sulphur summits synclinal thin three feet Toby valley Venango county Volatile matter water level West Freedom
Page 96 - ... would produce. The exact height and diameter are consequently difficult to determine, but it would appear that they had originally been from four to fifteen feet in height and perhaps four times those measures in diameter. All of the largest mounds and several of the smaller are upon the high ground, from one hundred and twenty to one hundred and fifty feet above the river. The rest are on the slope between it and the river. I selected for examination one of several similar mounds, which were...
Page iv - WG PLATT — Geologist in charge of the Survey of Armstrong and Jefferson counties. RH SANDERS — Topographical Assistant in Dauphin, Lebanon and Berks counties. IC WHITE — Geologist in charge of the Survey of Crawford and Erie counties.