. Bulletin of the Department of Agriculture. Agriculture; Agriculture. lA/ADSWORTN aARSOAf PLAM. oi/T-iif^s/y a/?£:a S/LT AREA f^-LAy^ AA/O iVAT^^A/^EA AMARGOSA /?£r<P/0// Fig. 1.—Diagrams showing tlie proportion of mountain and intermomitain area in the several districts. ites, slates, limestones, and sandstones. Triassic and Jiu-assic formations are rela- tively less abundant and occur in widely distributed patches in the west-central and southwest portions of the basin region. They consist of limestones, slates, shales, and thin beds of quartzite. In the Triassic are also found beds
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. lA/ADSWORTN aARSOAf PLAM. oi/T-iif^s/y a/?£:a S/LT AREA f^-LAy^ AA/O iVAT^^A/^EA AMARGOSA /?£r<P/0// Fig. 1.—Diagrams showing tlie proportion of mountain and intermomitain area in the several districts. ites, slates, limestones, and sandstones. Triassic and Jiu-assic formations are rela- tively less abundant and occur in widely distributed patches in the west-central and southwest portions of the basin region. They consist of limestones, slates, shales, and thin beds of quartzite. In the Triassic are also found beds of gypsum. Post-Jurassic orogenic movement, accompanied by granitic intrusions, ushered in a period Of land elevation and erosion, which continued throughout Cretaceous Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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