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Full Description
Geology deals with the rocks of the earth's crust. It learns from their composition and structure how the rocks were made and how they have been modified. It ascertains how they have been brought to their present places and wrought to their various topographic forms, such as hills and valleys, plains and mountains. It studies the vestiges which the rocks preserve of ancient organisms which once inhabited our planet. Geology is the history of the earth and its inhabitants, as read in the rocks of the earth's crust.
Contents
Introduction: the Scope and Aim of Geology; The Work of the Weather; The Work of Ground Water; Rivers and Valleys; River Deposits; The Work of Glaciers; The Work of the Wind; The Sea and Its Shores; Offshore and Deep-Sea Deposits; Movements of the Earth's Crust; Earthquakes; Volcanoes; Underground Structures of Igneous Origin; Metamorphism and Mineral Veins; The Geological Record; The Pre-Cambrian Systems; The Cambrian; The Ordovician and Silurian; The Devonian; The Carboniferous; The Mesozoic; The Tertiary; The Quaternary; Index.
