Abstract

The carbonatite mass in the Tororo hills is one of several in the eastern Uganda region which are interpreted as plugs representing a final phase of volcanic activity. The structural features, comprising cone sheets, dikes, ring dikes, flow structures, small- and large-scale faulting, and jointing, are described and discussed. The ring dikes are explained as being intruded along a zone of weakness between a congealing plug and the wall rock.

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