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Volcano Boundaries
Dataset digitized from Geological Map ( 1:25 000) by Directorate of Overseas Surveys 1979. Special information from the Geology of St Helena Island, South Atlantic, by Ian Baker... -
Geology
General geological map (1:25 000) by Weaver B., based on Baker (1968) -
Geology Type
Dataset digitized from Geological Map ( 1:25 000) by Directorate of Overseas Surveys 1979. Special information from the Geology of St Helena Island, South Atlantic, by Ian Baker...