Applied palaeontology in the Chalk Group: quality control for geological mapping and modelling and revealing new understanding

In the subsurface, biofacies data in conjunction with lithological and geophysical data, has been used to interpret and extrapolate the distribution of Chalk formations in boreholes across southern England, allowing development of sophisticated three-dimensional models of the Chalk; revealing the influence of ancient structures on Chalk depositional architecture, and pointing to palaeoenvironmental factors that locally affected productivity of Chalk in Late Cretaceous oceans.