Southcote, Berkshire of chalk, with geological surveys also finding flint samples. A map produced by the Geological Survey of Great Britain in 1860 identifies the area as being predominantly Plastic Clay (now known as the Lambeth Group) and chalk north of the river, with flint and gravel samples typical of the Bagshot Formation south of the Kennet. More specifically, the 2000 survey showed different types of gravel, including Winter Hill (variably clayey and sandy), Lynch Hill (sand and gravel with lenses of silt, clay or peat), and head (a polymict deposit usually formed by periglacial solifluction or gelifluction). The survey also identified
Gravel Run (Susquehanna River tributary) beam bridge was built over the stream in 1939 and repaired in 2003. It is long. A concrete tee beam bridge that is long was built over the stream in 1960. Bassett Campground is located near Gravel Run, in the stream's left floodway. As of August 31, 2011, the wild trout designation for Gravel Run is being considered. It has been proposed that the stream be designated as a stream with naturally reproducing trout. The stream's Chapter 93 Classification is considered to be a Coldwater Fishery and a Migratory Fishery throughout its drainage basin. Gravel Run (Susquehanna River tributary) Gravel