Record Display for the EPA National Library CatalogRECORD NUMBER: 20 OF 34
|Main Title||Greater Pittsburgh region maps of mined-out areas and thickness of rock over the Pittsburgh coal /|
|CORP Author||Pennsylvania. Bureau of Topographic and Geologic Survey.|
|Publisher||U.S. Geological Survey ; Pennsylvania Topographic and Geologic Survey,|
|Subjects||Coal--Geology--Pennsylvania--Pittsburgh Region--Maps. ; Coal--Geology--Pennsylvania--Maps. ; Coal mines and mining--Pennsylvania--Pittsburgh Region--Maps. ; Coal mines and mining--Pennsylvania--Maps. ; Coal--Pennsylvania--Pittsburgh Region--Maps. ; Coal--Pennsylvania--Maps. ; Geology, Stratigraphic--Maps. ; Pittsburgh Region (Pa.)--Maps.|
|Collation||2 maps ; 78 x 104 cm, folded in envelope 26 x 18 cm.|
Covers Allegheny, Armstrong, Beaver, Butler, Washington, and Westmoreland Counties. Relief shown by contours and spot heights. "Contour interval 100 feet." Title from envelope. "Mapped, edited and published by the U.S. Geological Survey." "Bureau of Topographic and Geologic Survey, Commonwealth of Pennsylvania, Department of Environmental Resources"--Top margin. "Compiled in 1971 from USGS quadrangles dated 1953-1969." Location map on envelope. Plate 1 includes text, declination diagram and location map. Plate 2 includes text, declination diagram, location map, and generalized stratigraphic section. Includes bibliographical references on Plate 1.
Plate 1. Greater Pittsburgh region mined out areas of the Pittsburgh coal / by S.E. Cortis, T.B. Alexander, W.E. Edmunds -- Plate 2. Greater Pittsburgh region thickness of rocks over the Pittsburgh coal / by J.L. Craft.