Abstract
Recent deep boreholes in a small area near Bromsgrove and Droitwich in the Worcester Basin of Triassic times have provided a virtually complete Triassic succession, 3350 ft thick, which displays cyclic desert-sedimentation throughout, although the cyclothems differ in the three main rock groups. The sequences proved in many other borings in Worcestershire, Birmingham and Warwickshire, and a few in other parts of the central Midlands, are taken into account, subjected to cyclic analysis, and the results collated • The implications of cyclic sedimentation for local and regional correlation are discussed in the light of known flora and fauna, and the outcome is illustrated by palaeogeographical maps of Britain and also of north-west Europe.
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