Two chert lens 10-20cm thick exposed in Darby Creek. Appears to be White River Formation, but stratigraphically lower than Flattop. Extensive quarrying evident. Quality generally not as good as Flattop.
Two chert lens 10-20cm thick exposed in Darby Creek. Appears to be White River Formation, but stratigraphically lower than Flattop. Extensive quarrying evident. Quality generally not as good as Flattop.
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