Abstract
A field investigation made to ascertain if recognisable fracture patterns exist within the Chalk of southern England is described. The areas investigated included: the Chilterns the Isle of Thanet; the South Downs; and the Isle of Wight. Analysis of field data indicate that strike directions of fractures may be concentrated into sets. The strike direction of each set remains reasonably constant within a particular area and the pattern of fracturing appears to be related to the main fold axes in each area. Most fractures within the Chalk were found to be steeply inclined, although significant variations exist when results from the areas investigated are compared. Results indicate that definite fracture patterns are recognisable and that the likely fracture pattern for a specified area could be predicted. Although the accuracy of prediction is at present somewhat limited, determination of such fracture patterns is considered to be of significance.
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