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Upland limestone: Video playlist

Part of GeographyUpland limestone

Chemical weathering by solution in Upland Limestone Scenery

Description

The deflation of the upland limestone landscape by slow solution weathering is demonstrated at Norber in the Yorkshire Dales. Limestone is dissolved very slowly over a period of time. Erratics at Norber are boulders of gritstone standing on a plinth of limestone. The boulders protect the limestone from chemical weathering. The depth of the limestone indicates how long the weathering has taken. Thanks to Ordnance Survey.

Classroom Ideas

Could provide a stimulus for fieldwork on the rate of limestone erosion. Consider the factors that can affect erosion rate, including human factors such as acid rain. The contrast between eratic and limestone beneath can act as a very stark example of different rates of erosion for different rock types which could be related to any landscape.

Upland limestone

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