. Bulletin of the Geological Society of America. Geology. BULL. GEOL. SOC. AM,. VOL. 13, 1901, PL. 33 Conemaugh formation (26-44) Allegheny formation Wi25 25 Upper Freeport coal 24 Upper Freeport limestone ^ (Bolivar fire-clay) 22 23 Upper Freeport sandstone 22 Lower Freeport coal 21 Lower Freeport limestone 18 20 Lower Freeport sandstone 19 Upper Kittanning coal 18 Middle Kittanning coal 17 17 Lower Kittanning coal 16 "Split-six" coal 15 Kittanning sandstone 14 14 Ferriferous limestone 13 Clarion sandstone 12 12 Clarion coal 11 Brookville coal Pottsville formation (1-10) Henry (Bore
. Bulletin of the Geological Society of America. Geology. BULL. GEOL. SOC. AM,. VOL. 13, 1901, PL. 33 Conemaugh formation (26-44) Allegheny formation Wi25 25 Upper Freeport coal 24 Upper Freeport limestone ^ (Bolivar fire-clay) 22 23 Upper Freeport sandstone 22 Lower Freeport coal 21 Lower Freeport limestone 18 20 Lower Freeport sandstone 19 Upper Kittanning coal 18 Middle Kittanning coal 17 17 Lower Kittanning coal 16 "Split-six" coal 15 Kittanning sandstone 14 14 Ferriferous limestone 13 Clarion sandstone 12 12 Clarion coal 11 Brookville coal Pottsville formation (1-10) Henry (Bore- Henry (Bore- hole No. 5) hole No. 1) of Dobt ho. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Geological Society of America. [New York : The Society]
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1890
