TG1743 : Paramoudra on chalk outcrop - detail

near to West Runton, Norfolk, Great Britain

Paramoudra on chalk outcrop - detail
Paramoudra on chalk outcrop - detail
Flint nodules such as the one seen here are called paramoudras, also known as pot stones. These large nodules originally had a central core filled with chalk. Once exposed, the soft chalk is quickly washed out by wave action, leaving a large hole. One can occasionally spot pot stones in gardens where they serve as nature-made flower pots.

The chalk layer is only visible at low water. It is composed of calcium carbonate from the remains of microscopic marine organisms that once lived in a warm shallow sea which covered this area between 62 and 132 million years ago. Its upper few centimetres are composed of fragments of rocks.
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year taken
2008
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TG1743, 102 images   (more nearby )
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Supplemental image
Date Taken
Tuesday, 6 May, 2008   (more nearby)
Submitted
Thursday, 8 May, 2008
Category
Geological feature   (more nearby)
Subject Location
OSGB36: geotagged! TG 177 434 [100m precision]
WGS84: 52:56.6432N 1:14.3638E
Camera Location
OSGB36: geotagged! TG 177 434
View Direction
NORTH (about 0 degrees)
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