It gets its name from the gate-like passage that used to exist at the type section in Price Canyon.Forrester, J.B., 1918, A short comment on Bulletin 371 of the U.S. Geological Survey: Utah Academy of Sciences Transactions, v. 1, p. 24-31. The western side of the gate was removed during highway improvement, which exposed most of the stratum. Fossil pollen indicate a late Campanian age.Fouch, T.D., Lawton, T.F., Nichols, D.J., Cashion, W.B., and Cobban, W.A., 1983, Patterns and timing of synorogenic sedimentation in Upper Cretaceous rocks of central and northeast Utah, IN Reynolds, M.W., and Dolly, E.D., eds., Mesozoic paleogeography of the west-central United States: Society of Economic Paleontologists and Mineralogists, Rocky Mountain Section, Rocky Mountain Paleogeography Symposium, v. 2, p. 305-336.
