Group of superimposed algae reefs in the upper part of the basal member of the Green River formation. Garfield County, Colorado. 1925.
Dates
Date Taken
1925
Summary
Group of superimposed algae reefs in the upper part of the basal member of the Green River formation near the divide between west Douglas and East Salt Creeks. The man's feet are at the base of the lowest reef, which truncates the shaly sandstone beds below; his shoulders are level with a thin reef that has unusual pencillated structure. The thin dark colored bed at the top of the unit consists of algal pebbles some of which are shown Bradley photo 182. The group is bout 5.5 meters (18 feet) thick. Garfield County, Colorado. August 18, 1925. Plate 29-A in U.S. Geological Survey. Professional paper 154. 1929.
Summary
Group of superimposed algae reefs in the upper part of the basal member of the Green River formation near the divide between west Douglas and East Salt Creeks. The man's feet are at the base of the lowest reef, which truncates the shaly sandstone beds below; his shoulders are level with a thin reef that has unusual pencillated structure. The thin dark colored bed at the top of the unit consists of algal pebbles some of which are shown Bradley photo 182. The group is bout 5.5 meters (18 feet) thick. Garfield County, Colorado. August 18, 1925. Plate 29-A in U.S. Geological Survey. Professional paper 154. 1929.
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