Geology of Colorado (Boulder Valley) - Field Trip #1, Stop #1: Fountain Formation

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Emmett Evanoff describing the Fountain formation at Stop #1 of field trip (3/15/2003, 9:30 a.m.).  The Fountain a mixture of conglomerates with dark red arkosic sandstone layers.  It easy to see the broad trough crossbeds with truncated surfaces.  The Fountain formation has a high feldspar content.
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Emmett Evanoff describing the Fountain formation at Stop #1 of field trip (3/15/2003, 9:30 a.m.). The Fountain a mixture of conglomerates with dark red arkosic sandstone layers. It easy to see the broad trough crossbeds with truncated surfaces. The Fountain formation has a high feldspar content.