Chert Type Index



2003 by the Center For Social Research, Parkland College


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ATTICA
BLANDING
BURLINGTON
COBDEN
DEGONIA
DONGOLA
DOVER
ELWOOD - JOLIET
GLACIAL TILL
HARMILDA
KAOLIN
MILL CREEK
MOLINE
OBSIDIAN
ONEOTA
PLATTEVILLE - GALENA
SHAKOPEE
ST. LOUIS
WYANDOTTE