Sixth annual report of the United States geological survey of the Territories, embracing portions of Montana, Idaho, Wyoming, and Utah : being a report of progress of the explorations for the year 1872 (1873)
Geological and Geographical Survey of the Territories (U.S.), Hayden, F. V. (Ferdinand Vandeveer), 1829-1887 · Washington : G.P.O. · leaf 112
wer Silurian to the •Cretaceous, inclusive. Here ■£and there are patches of gigneous rocks which appear >to have produced in soaie sinstances these short anti- ;clinals. Far up in the val- °leys of all the little streams ■:^that flow into the Gallatin ^Eiver may be seen the mod- >ern deposits,… … a greater or less thickness of the lake-* 74 GEOLOGICAL SURVEY OF THE TERRITORIES. deposits, with here and there a large amoiiut of modern drift. Thesurface is covered with water-worn bowlders, the remains of the lastacts in the drama. I have so often called attention to these very-modern…
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