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Lithics Home | Counties A-Z | Geologic Systems | Lithic Types | Chert Drawers | Lithics Program In 1994, Morrow published an article entitled, A Key to the Identification
of Chipped-Stone Raw Materials Found on Archaeological Sites in Iowa,
which serves as the basis for the Visual Basic Script program above.
Included in the article is a state-wide map of chert bearing bedrock
systems, definitions of lithic macroscopic attributes, descriptions
for 35 of the most commonly occurring lithic raw material types in
Iowa, and a logic diagram employing multiple macroscopic attributes
to help correctly identify raw material. This macroscopic identification
key has been the primary resource available for identifying chert
samples and lithic characteristics in Iowa. The logic diagram asks
a series of “yes / no” questions regarding macroscopic
attributes such as texture, fossil content, grain size, mottling,
transparency, and color which leads to an identification page complete
with two sized pictures and accompanying written descriptions. Morrow
1994 In Journal of the Iowa Archeology Society, 41:108-129. Mary De La Garza, Web Master July 2009
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