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A "quadrangle" is a topographic map produced by the United States Geological Survey (USGS) covering the United States. The maps are usually named after local physiographic features. The shorthand "quad" is also used, especially with the name of the map; for example, "the Ranger Creek, Texas quad". A quadrangle is defined by north and south ...
The Beginning Point of the U.S. Public Land Survey is at a point on the Ohio-Pennsylvania border between East Liverpool, Ohio, and Ohioville, Pennsylvania, on private property. A National Historic Landmark marker commemorating the site lies on the side of a state highway, exactly 1,112 feet (339 m) to the north of the point.
The following is a list of the mapped bedrock units in Pennsylvania. The rocks are listed in stratigraphic order. The rocks are listed in stratigraphic order. [ 1 ]
Primarily from the United States Government Printing Office Style Manual. [1] State names usually signify only parts of each listed state, unless otherwise indicated. Based on the BLM manual's 1973 publication date, and the reference to Clarke's Spheroid of 1866 in section 2-82, coordinates appear to be in the NAD27 datum.
USGS Saint Thomas(PA) Quadrangle Parnell Knob is a mountain in the Ridge and Valley Appalachians region of south central Pennsylvania . This knob rises above the village of St. Thomas, where Front Mountain and Broad mountain come together.
Today's U.S. Topo quadrangle (1:24,000) maps are mass-produced, using automated and semiautomated processes, with cartographic content supplied from the National GIS Database. [34] In the two years from June 2009 to May 2011, the USGS produced nearly 40,000 maps, more than 80 maps per work day. [34]
Mauch Chunk Ridge can be seen in part as the ridgeline in the lower right hand quadrant of this contour map Detail of eastern Pennsylvania. Mauch Chunk Ridge (on older USGS Maps) or Mauch Chunk Mountain is a historically important barrier ridgeline north of the Blue Mountain escarpment and 3rd parallel ridgeline south of the Nesquehoning Creek after Nesquehoning Mountain and Pisgah Ridge [1 ...
USGS Clifford(PA) Quadrangle Elk Hill , also known as North Knob or Elk Mountain , is a mountain in Herrick Township, Pennsylvania . It is the highest mountain peak in Pennsylvania east of the Susquehanna River and the highest peak on the Allegheny Plateau .