Lemont limestone, the 'Athens marble' of early Chicago
The Lemont limestone story begins eons before there was a Chicago with a Water Tower and Holy Name Cathedral, both built with locally mined stone that slowly turns from white to yellowish. Four hundred million years ago, give or take a few, a vast inland sea covered the site of Bromberek Flagstone in Joliet. It was dense with aquatic life. “We find fossils and stuff,” Larry Bromberek, the ...