Above the Gault is the Upper Greensand, which varies from the golden sands that crown the West Dorset heights, such as Pilsdon Pen and Golden Cap, to the rubbly sandstones found in the centre of the county. The fossiliferous, green sandstone found around Shaftesbury contains many ammonites which, when compared to other deposits, indicate condensed deposition during different periods at different locations and detailed analysis reveals that basement structures were still active at this time.