Models of the structure of kimberlite pipe systems are based upon evidence obtained by the deep mining of kimberlites in South Africa and the recognition of epiclastic kimberlites as the near-surface and subaerial expression of kimberlitic volcanism. Combination of these observations has resulted in a model of a kimberlite pipe system (Figure 3.1) in which crater, diatreme, and root zones can be recognized (Hawthorne 1975, Clement 1979, 1982, Clement and Skinner 1979). Each zone is characterized by specific geological features and contains kimberlites of a distinct petrographic type.
KeywordsRoot Zone Country Rock Wall Rock Kimberlite Pipe Ring Fault
Unable to display preview. Download preview PDF.