8th August, 2018. The Nature of Chalk, part 3.
In his book The Norfolk Landscape David Dymond writes (Alastair Press, 1990,25) ‘Laid down in a Cretaceous sea between 135 and 70 million years ago, the chalk consists primarily of the remains of once living organisms such as algae and foraminifera. It accumulated slowly, probably at the rate of one foot in 30,000 years. In […]
8th August, 2018. The Nature of Chalk, part 3. Read More »