The Wasatch Group as originally defined by Hayden (1869, p. 91) included variegated mudstone and sandstone beds exposed along the main line of the Union Pacific Railroad, from Carters Station, Wyoming, westward past Evanston, Wyoming, to Wasatch Station, Utah, and increasingly conglomeratic beds exposed from Wasatch Station westward into Echo Canyon, Utah. Later descriptions by Hayden (1870, p. 106, 113-114) make it clear that he intended to include both the variegated beds and the conglomerate beds in the Wastach Group.

Exposures in the Evanston area were interpreted by Veatch (1907, p. 88) as showing that an angular...

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