Abstract

Three closely associated travertine deposits that have been precipitated from hot springs occur near Wellsville, Colorado. Field relations suggest that hot waters dissolved carbonate from underlying Ordovician dolomites and migrated to the surface along faults that border each deposit. Conformity of the deposits to present topography plus several nearby tepid springs date the deposits as very recent. A post-Sangamonian(?) age is indicated by their occurrence on river gravels of Sangamonian(?) age.

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