like to grow in soil with a high nitrate content, and are likely to have
grown here when in the past, toilets from the trains passing through Reading
were emptied trackside as they left the station.
two large gasometers ahead of you. These are close to the site of the
to Reading in 1818 (Reading Gas Light Company) but the gasworks was moved
to Kennetside in 1888, the gas then being generated from coal brought
to the town by barge along the Kennet and Avon Canal.
The gas in
the modern gasometers comes from deep down under the North Sea via pipelines
from East Anglia. This gas was generated from Carboniferous Coal Measures
(which we will also encounter, but a long way under the ground, at Sonning).
It is trapped
in Lower Permian Sandstones (280 million years old) capped by impermeable
Upper Permian salt beds (250 million years old). Gas was first discovered
in the North Sea in December 1965.
TO PROFESSOR BRUCE SELLWOOD OF READING UNIVERSITY FOR ALL OF HIS HELP
WITH THIS WALK