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The Wissahickon Formation is a mapped bedrock unit in Pennsylvania, New Jersey, and Delaware. It is named for the Wissahickon gorge in Fairmount Park, Philadelphia. In Maryland formations, the term "Wissahickon" is no longer used. Rocks in this classification have since been divided into several units, such as Lower Pelitic Schist and Prettyboy ...
Wissahickon Creek is a tributary of the Schuylkill River in Montgomery and Philadelphia Counties, Pennsylvania. [1]Wissahickon Creek rises in Montgomery County, runs approximately 23 miles (37 km) passing through and dividing Northwest Philadelphia before emptying into the Schuylkill River at Philadelphia.
The Cockeysville Marble is a Precambrian, Cambrian, or Ordovician marble formation in Baltimore, Carroll, Harford and Howard Counties, Maryland. It is described as a predominantly metadolomite, calc-schist, and calcite marble, with calc-gneiss and calc-silicate marble being widespread but minor.
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The village of Wissahickon was founded by officials of the Pencoyd Iron Works in the late nineteenth century. [1] Beginning in the 1880s, growing numbers of mill owners and wealthy business owners from neighboring Manayunk sought elegant homes on ample lots; they set their eyes on land previously owned by prominent Philadelphia families – including the Camac, Dobson, Salaignac, and Wetherill ...
This category contains the geologic formations with a schist lithology. Pages in category "Schist formations" The following 11 pages are in this category, out of 11 total.
Glacial erratic boulders of King County are large glacial erratic boulders of rock which were moved into King County, Washington by glacial action during previous ice ages.. The Pleistocene ice age glaciation of Puget Sound created many of the geographical features of the region, including Puget Sound itself, [1] and the erratics are one of the remnants of that age. [2]
A triple-span stone arch bridge built in 1888, it carries Ridge Avenue over the Wissahickon Creek. It is the last crossing of the creek before it empties into the Schuylkill River. Four other stone arch bridges cross the Wissahickon. [2] The 119.1-ft-long bridge was rehabilitated in 1954.