ronhess.inforonhess.info/md/scans/0050/00500072.pdf · chert and siltstone (middle or lower...

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Page 1: ronhess.inforonhess.info/MD/scans/0050/00500072.pdf · CHERT AND SILTSTONE (MIDDLE OR LOWER SILURIAN) Gray, tan, brcwn, and green chert and lesser amounts of s i Its tone. A few hundred