The limestone and dolomite resources of the country north and west of Ashbourne, Derbyshire : description of 1:25,000 sheet SK 15 and parts of 04, 05 and 14

The study of samples from 25 cored boreholes, 56 major
sections and a large number of small exposures, together
with information from the records and geological maps
of the Institute, form the basis of the assessment of
limestone and dolomite resources in the country lying to
the north and west of Ashbourne, Derbyshire.
The limestones have been classified on the basis of
their calcium carbonate content, and the accompanying
1:25 000 resource map shows the distribution of the
recognised categories of limestone at or near to the
surface. Horizontal sections constructed from the
borehole data and from knowledge of the regional
geology indicate the categories likely to be encountered
at depth.
Three resource blocks have been outlined and for
each, the geology, the categories of limestone and the
occurrences of other rocks are described. The results of
investigations of chemical and mechanical properties are
presented with outline borehole logs and the data are
statistically analysed for the stratigraphical units
described.