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Geoscape Nanaimo Geoscience for central Vancouver Island communities The rocks of home: Nanaimo group
Eighty-five per cent of the population of central Vancouver Island live on coastal lowlands underlain by sedimentary rocks. These lowlands have formed over geological time by the relatively rapid stream and glacier erosion of the weak sedimentary rocks. In contrast, more resistant volcanic and granitic rocks form rugged mountain landscapes that are generally unfavourable for settlements.
Coal seam exposed in highway cut, Nanaimo
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