It is the intention of this report, therefore, 

 to give in a general way a description of tte 

 conditions that affect the treeless area sur- 

 rounding the Fremont National Forest or the 

 western yellow pine forests of southeastern Ore- 

 gon, and give the points which should Toe con- 

 sidered in our future planting work and estab- 

 lishment of the permanent national Forest boun- 

 dary. 



The northern and eastern part of the 

 Fremont "national Forest is in the northwest and 

 of the Great Basin region of interior drainage 

 which lies between the Sierra IJevada and Rocky 

 Hountainsi The Walker and Paulina Iloun tains to 

 the north and. the southern porti on of the Summer 

 Lake Rim to the west form the divide between the 

 Pacific and interior drainage basin in Oregon. 

 This Great Basin was a high, apparently level, 

 lake bed with an elevation ranging between 4500 

 p-'tf. 5100 feet above sea level. During the Plio- 

 cene epoch, or the period when the Cascade and 

 Sierra ITevada llountains were upligted, this pre- 

 existing plateau was broken up into irregular 

 blocks, some of which dropped and others were 

 dipped or tilted - thus forming scraps or faults 



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