LIVINGSTON AND BIG TIMBER QUADRANGLES. 133 



HVINGSTO]^^ QtJADRANGI/E. 



LOCATION, EXTENT, AND CLASSIFICATION OF LANDS. 



The Livingston quadrangle is situated in Montana between 45° and 46° north 

 latitude and between 110° and 111° west longitude, comprising an area of 2,146,664 

 acres. The lands consist of forest, woodland, and nontimbered tracts, with the 

 acreage of the several classes shown in appended table: 



Classification of lands in the Livingston quadrangle, Montana. 



Acres. 

 Forested 886, 120 



, AVoodland 54, 000 



Nontimbered 1, 206, 544 



Total ". 2, 146, 664 ' 



The nontimbered lands comprise tracts of great diversity in their topographic 

 and physical features, owing to the alti'tudinal differences in their position. They 

 are here divided into four general classes, as shown in the following table: 



Classification of nontimbered lands in the Livingston quadrangle, Montana. 



Acres. 

 Agricultural 256, 356 



Grazing 712, 115 



Bare rocks and high alpine 227, 433 



Lakes and tarns , ., 10, 640 



Total 1 , 206, 544 



TOPOGRAPHIC FEATURES. 



The quadrangle comprises two marked divisions — a southern, made up almost 

 wholly of rough mountain areas, and a northern, consisting of rolling, semiarid 

 plains, hemmed in by a stretch of mountain rampart along the west side and 

 rising into a small tract of rugged and rocky heights in the north-central areas. 



The high relief in the southern portions of the quadrangle is formed by portions 

 of the Gallatin Range and by the north half of the Absaroka Range, both of them 

 eastern extensions of the Rockies. The low relief, aside from the canyons and 

 short valleys in the interior of the mountain regions, is formed by the valley of 

 Yellowstone River, bisecting the district from south to north and separating the 

 Gallatin and Absaroka ranges by a comparatively broad valley. 



The portion of the Gallatin Range within the quadrangle consists, in its 

 northern part, of a narrow, rocky crest, fronting rather abruptly on the valley 

 of Yellowstone River and sending out short, steep spurs. With a westerly trend 

 the crest line of the range gradually passes beyond the limits of the quadrangle 

 until, in the southwest corner, the range is represented only by eastern tetmina- 



