Department or Administrative Unit
The collector and student of petrified woods cannot long be satisfied to merely place these colorful and interesting specimens in the cabinet with the mere label, "petrified wood." Frequently determining the types of wood which once thrived in a given area is of importance to give a clue to climatic conditions of past geological ages. The collector should at least be qualified to recognize the more common woods and distinguish one family of trees from another.
Beck, G. F. (1936). Grinding Thin Sections for Determining Petrified Woods. The Mineralogist, 4(12), 29-32.
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