Scafell Pike - Geology

Geology

Scafell Pike consists of igneous rock dating from the Ordovician geologically part of the Borrowdale Volcanics. The summit plateau of Scafell Pike, and that of other neighbouring peaks, is covered with shattered rock debris which provides the highest altitude example of a summit boulder field in England. The boulder field is thought to have been caused in part by weathering, such as frost action. Additional factors are also considered to be important, however opinion varies as to what these may be. Clifton Ward suggested that weathering with earthquakes as a secondary agent could be responsible, while J E Marr and R A Daly believed that earthquakes were unnecessary and suggested that frost action with other unspecified agents was more likely. To the north of the summit are a number of high altitude gills which flow into Lingmell Beck. These are good examples in Cumbria for this type of gill and are also biologically important due to their species richness.