Summerville Formation
Videos
The Summerville Formation is a geological formation in New Mexico, Colorado, and Utah of the Southwestern United States. It dates back to the Oxfordian stage of the Late Jurassic.
Summerville Formation at the type locality at Summerville Point, east side of the San Rafael Swell, Emery County, Utah
Evenly bedded Summerville Formation exposed along Utah Highway 24, 2.4 miles west of Hanksville, Utah
Closeup of the Summerville Formation showing even bedding, 2.4 miles west of Hanksville, Utah.
Summerville Formation with gypsum-filled cracks. U.S. quarter dollar (24 mm) for scale
Bluff Formation
Videos
The Bluff Formation is a geological formation found in the Four Corners area. It was deposited in the late Jurassic Period.
Summerville Formation
…type locality at Summerville Point, east side of the San Rafael Swell, Emery County, Utah Type Geological formation Unit of San Rafael Group Sub-units Bluff Sandstone Underlies Morrison Formation Overlies Todilto & Curtis Formations Thickness 100 m (330 ft) Lithology Primary Mudstone, sandstone Other Gypsum Location…
Bluff Formation at its type area, Bluff, Utah, US