The geology of the North York Moors National Park in northern England is provided largely by a thick southerly dipping sequence of sedimentary rocks deposited in the Cleveland Basin during the Jurassic Period.
A series of ice ages during the Quaternary period has left a variety of glacial deposits, particularly around the margins of the National Park.
It is the Corrallian formations which form the summits and southerly tilted slopes of the Tabular Hills along the southern margin of the National Park.
It outcrops too along the coast southwards as far as Staithes and around Robin Hood's Bay from Homerell Hole south to Old Peak/South Cheek.
[3] Also of Pliensbachian age is the Cleveland Ironstone Formation, a mix of siltstones and sandstones but including siderite nodules.
In the southwest, two parallel faults downthrow the geological succession between them, the more northerly un-named one running through Ampleforth effectively defining the margin of the national park.
The western scarp of the Hambleton Hills from Byland Abbey in the south to Broughton Bank in the north is host to landslips.
Jurassic coal seams were worked at Danby, Eskdale and Coxwold mainly for use in connection with local lime burning.