SY7681 : White Nothe landslip, near Ringstead, Dorset

taken 3 years ago, near to Holworth, Dorset, Great Britain

White Nothe landslip, near Ringstead, Dorset
White Nothe landslip, near Ringstead, Dorset
The part of White Nothe seen here was subject to massive historical landslides, where the Cretaceous Chalk and Greensand slid over the earlier, underlying layer of Jurassic Kimmeridge Clay.

Cretaceous Chalk and Greensand are permeable rock, so water filters through them until it reaches the Kimmeridge Clay, which is impermeable to water. In the past, when the permeable sediments became saturated and heavy, and water oozed between them and the impermeable Kimmeridge Clay, the soft clay crumbled from the weight, and the overlying Cretaceous rocks started to crack and slip down the slope of clay. The water acted as a lubricant between the layers, contributing to the landslide seen in the picture.
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SY7681, 75 images   (more nearby )
Photographer
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Date Taken
Wednesday, 10 September, 2014   (more nearby)
Submitted
Friday, 19 September, 2014
Geographical Context
Coastal  Geological interest  Rocks, Scree, Cliffs 
Primary Subject of Photo
Cliff 
Subject Location
OSGB36: geotagged! SY 7696 8121 [10m precision]
WGS84: 50:37.8077N 2:19.6270W
Camera Location
OSGB36: geotagged! SY 7694 8124
View Direction
Southeast (about 135 degrees)
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Image classification(about): Geograph
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