Day 7 (7/12/03) - Paint Mines, Calhan, Colorado

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Bob Raynolds puts his finger on the D1/D2 contact at Calhan Paint Mines. The darker material below is a lignite bed with layers of ash. Kirk Johnson took samples for dating.
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Bob Raynolds puts his finger on the D1/D2 contact at Calhan Paint Mines. The darker material below is a lignite bed with layers of ash. Kirk Johnson took samples for dating.