sentences:  The area that now constitutes Great Britain was drifting northwards as Pangea rotated, was at a latitude of 10° – 20° north, equivalent to the latitude of the present day Sahara desert.Erosion of the then recently uplifted landmass formed Aeolian deposits in the southern and central parts of the country.This iron-rich silica sandstone was both oxidised and reworked to give it its red colouration and its name, "New Red Sandstone".