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Introduction to Rocks Poster |
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E104 Introduction to Rocks
This is an outstanding rock identification chart! The introduction explains that
each type of rock is the result of a specific mixture of minerals subjected to a
clearly defined geological process. It shows and describes the most common
rock-forming minerals and variations that occur within rock types.
The bulk of the poster is divided into three sections, one for each rock type:
igneous, sedimentary, and metamorphic. An illustration shows how they are
made, and a photograph shows a natural formation. A dozen other photographs
show representative specimens. Each is accompanied by an informative
caption citing identifying characteristics and common variations.
A bonus section shows and explains some of the more specialized and
popular rock forms, such as geodes, concretions, agates, and meteorites.
This is a great poster for earth science classes. Rock collectors find it invaluable
for quick reference..
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