![]() ![]() Europeans became aware of the existence of petroleum in the 1600s. Petroleum found along Oil Creek was known to Native Americans for hundreds of years through natural seeps. The presence of upwards-curving folds in the caprock called anticlines, or sometimes an inversion of an anticline called a syncline, greatly varied the depth of the reservoirs, from around 4,000 feet (1,200 m) to just beneath the surface. Over time, the oil migrated toward the surface, became trapped beneath an impervious layer of caprock, and formed a reservoir. Most of the oil produced in northwestern Pennsylvania was formed in sandstone reservoir rocks at the boundary between the Mississippian and Devonian rock layers. On a floodplain, the well and the museum are protected by an earthen dike. The site was originally on an artificial island formed by the creek and a mill race. ![]() situated on the flats 150 feet (46 m) from the east bank of Oil Creek. To search for cemeteries, villages and other features visit the USGS GNIS site.Ĭheck here for information on how to order US Geological Survey Maps of Pennsylvania counties.The Drake Well is located in Cherrytree Township, Venango County in northwestern Pennsylvania. The list below shows boroughs and villages within each township however, some townships may be combined in one map. ![]() Link to Pennsylvania county USGenWeb sites at the bottom of the Pennsylvania Map Index page. The adjacent counties shown on the image map are links to their USGS maps. The township images are cropped from a 1/50,000 USGS Geological Survey Map of Venango County dated 1986 based on 1/24,000 maps dated 1963 through 1968. A text list of the township maps is shown below. ![]() This is a clickable image map of townships and boroughs in Venango County Pennsylvania. Venango County Pennsylvania Maps Venango County Pennsylvania, Township Map ![]()
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