North Cliff failure

Andre

Apparantly we have missed this event some weeks ago.

Careful when walking on cliffs. (Look at the right top at 10 seconds.)

Looking forward to comments from geologists.

Evo

I saw it when it first came out.

Astronuc

From the video - "The failure occurred at about 5pm on Friday 23rd September 2011. It took place on the North Coast of Cornwall."

One should always be careful approaching the edge of cliff, and depending on the geology (e.g., sandstone) and weather (following heavy rain), it's best to stay well away from some areas.

NileQueen

Dramatic mass wasting. What is the geology of that area?

Astronuc

The site is apparently North Cliffs near Hayle, Cornwall. The geology in the area seems mostly sandstone and shale on or adjacent to granite.

Hayle cliff fall 'could happen again' experts warn
http://www.bbc.co.uk/news/uk-england-cornwall-15246855

The collapse was recorded by geologist Richard Hocking - a soils and materials engineer for Cornwall Council.

More cracks have appeared along the cliff top, prompting fears of another collapse.
. . . .
The collapse of the cliff is thought to have been caused by a deep-seated inclined fault plane on which the rock mass slid.

Cornwall can really be imagined as a finger of 400 million year old Devonian slates along with Carboniferous sandstones and shales pointing across the Atlantic Ocean towards the USA, with a backbone of granite. . . . .

http://www.cornwallinfocus.co.uk/geography/geology.php

http://en.wikipedia.org/wiki/Geology_of_Cornwall
http://en.wikipedia.org/wiki/Cornwal...ical_geography
http://en.wikipedia.org/wiki/Devon#G...hy_and_geology

Report on the geology of Cornwall, Devon and west Somerset By Henry Thomas De La Beche, 1839
http://books.google.com/books?id=YwC...page&q&f=false

Geology near Penzance - http://www.pznow.co.uk/geology/geology.htm

West Penwith geology - http://projects.exeter.ac.uk/geominc...%20Penwith.pdf

http://www.cornwall-online.co.uk/penwith/hayle.htm

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Andre Blog Entries: 2 Recognitions: Gold Member	North Cliff failure Tweet Apparantly we have missed this event some weeks ago. Careful when walking on cliffs. (Look at the right top at 10 seconds.) Looking forward to comments from geologists.

Evo Mentor Blog Entries: 4	I saw it when it first came out.

Astronuc Admin	From the video - "The failure occurred at about 5pm on Friday 23rd September 2011. It took place on the North Coast of Cornwall." One should always be careful approaching the edge of cliff, and depending on the geology (e.g., sandstone) and weather (following heavy rain), it's best to stay well away from some areas.

NileQueen	North Cliff failure Dramatic mass wasting. What is the geology of that area?