barton clay

Suffers greatly from marine erosional processes and sub aerial processes. Rain percolates down through the gravel and it stopped by the clay strata and begins to issue out as surface run off. This escaping ground water moistens the clay, causing rotational slips causing slumping of Barton. This repeated process causes a slipping plane to form.

At Naish Farm there has been a negative cost benefit analysis and therefore nothing has been done to protect and so it is naturally eroding away, in some areas up to 5m per year. This is allowed as although there is a holiday site, it is mainly caravans…


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