The Askrigg Block is the name applied by geologists to the crustal block forming a part of the Pennines of northern England and which is essentially coincident with the

Yorkshire Dales The Yorkshire Dales is an upland area of the Pennines in the historic county of Yorkshire, England, most of it in the Yorkshire Dales National Park created in 1954. The Dales comprise river valleys and the hills rising from the Vale of York ...

. It is defined by the

Dent Fault The Dent Fault is a major fault zone on the boundary between the counties of Cumbria and North Yorkshire in northern England. It is named after the village of Dent in Dentdale, on the western margin of the Yorkshire Dales. The fault, or rather ...

to the west and the Craven Fault System to the south whilst to the north it is separated from the Alston Block by the Stainmore

Trough Trough may refer to: In science * Trough (geology), a long depression less steep than a trench * Trough (meteorology), an elongated region of low atmospheric pressure * Trough (physics), the lowest point on a wave * Trough level (medicine), th ...

. It originated as a geological structure during the Carboniferous Period as a major element in the Pennine Block & Basin Province.Edwards, W; Trotter, F M, The Pennines and Adjacent Areas, British Regional Geology (Third ed.), London: HMSO. Natural Environment Research Council (published 1954)

References

Geology of the Pennines Geology of North Yorkshire {{geology-stub