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Fine grained black granite exterior surface, former building of the Toronto-Dominion Bank (Jasper Avenue), Edmonton, Alberta. May 2014
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Igneous Rock
Rock Types are classified into three different kinds: Igneous rocks are from magma cooling; Sedimentary rocks are from weathering, deposition, compression, and erosion; Metamorphic rocks are rock modified by heat and pressure. As igneous rocks are named ‘born of fire’ in Latin, intrusive ones are within the crust and extrusive ones are above the crust. An excellent example for intrusive igneous rock is granite, where the history of the Empire Building is carved in fine grained black granite.
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