2014

TV4499 : Coastal unconformity

taken 9 years ago, near to Newhaven, East Sussex, England

Coastal unconformity
Coastal unconformity
At the west end of the car park are various signs advising of hazards attending the cliffs. The larger part of these cliffs are formed from the Cretaceous aged chalk, specifically here the 'Tarrant Chalk Member' of the 'Culver Chalk Formation' of the 'White Chalk Subgroup' of the 'Chalk Group' - that information courtesy of the British Geological Survey's 1:50,000 geological map no 319/334 'Lewes & Eastbourne', published in 2006. Overlying it are the basal beds of the Palaeogene aged glauconitic pebbly sands assigned to the 'Lambeth Group' and which are from either the 'Woolwich Formation' or 'Reading Formation', or possibly both - the map doesn't distinguish between them. There was a significant time interval between the deposition of the Cretaceous strata and the overlying Palaeogene strata during which erosion of the chalk took place. The boundary can be seen to be uneven.

Creative Commons Licence [Some Rights Reserved]   © Copyright Alan Bowring and licensed for reuse under this Creative Commons Licence.
This photo is linked from: Automatic Clusters: · Chalk [7] · Car Park [4] · Signs [4] ·
1:50,000 Modern Day Landranger(TM) Map © Crown Copyright
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1:50,000 Modern Day Landranger(TM) Map © Crown Copyright
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TV4499, 63 images   (more nearby 🔍)
Photographer
Alan Bowring   (more nearby)
Date Taken
Sunday, 26 October, 2014   (more nearby)
Submitted
Wednesday, 29 October, 2014
Subject Location
OSGB36: geotagged! TV 4459 9998 [10m precision]
WGS84: 50:46.8826N 0:2.9770E
Camera Location
OSGB36: geotagged! TV 4461 9998
View Direction
WEST (about 270 degrees)
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Image classification(about): Geograph
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