Cox, F.C.; Harrison, D.J.. 1980 The limestone and dolomite resources of the country around Wirksworth, Derbyshire : description of parts of 1:25,000 sheets SK 25 and 35. London, UK, British Geological Survey, 147pp. (Mineral Assessment Report 47) (Unpublished)
Abstract
The study of samples specially collected from 18 cored
boreholes, 29 major exposures and 193 scattered
localities, together with information from the records
and geological maps of the Institute of Geological
Sciences, form the basis of the assessment of limestone
and dolomite resources in the Wirksworth area,
Derbyshire. Fourteen boreholes were drilled under
contract for the Industrial Minerals Assessment Unit
and in addition, members of the Unit drilled sixteen
shallow cored boreholes using a small portable drilling;
machine. Cores from four boreholes, chemical
analyses and many borehole logs were made available
by the industry.
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 limestones in the uppermost
10 m of strata, for which most information is available.
Horizontal sections constructed from the borehole data
and from knowledge of the regional geology, indicate the
categories likely to be encountered below this depth.
Eight resource blocks have been outlined, and for each,
the geology, categories of limestones and occurrences
of other rocks are described. The results of investigations
of chemical and mechanical properties are presented
with outline borehole logs; the data have been
statistically analysed for the stratigraphical units
described.
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