Tag Archive for ‘Canada’

The Geologic History Book

The Geologic History Book

Audio File   The vast group of rock systems which constituted the outer crust of the world during the life-dawn […]

The First Continental Flood Stage — The Invertebrate Animal Age

The First Continental Flood Stage — The Invertebrate Animal Age

Audio File   Accompanied by little or no volcanic action, the periodic phenomena of land elevation and land sinking characteristic […]

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