PHYSICAL GEOGRAPHY 89 



been more or less thickly veneered by outwash of con- 

 tinental materials derived from the adjacent high- 

 lands (principally those to the north side), which has 

 been spread over them by distributary drainages and 

 in places they have been extensively buried in loess- 

 like, wind-blown sand, notably near Guasti and Wine- 

 ville. 



VALLEYS OF THE DESERT SIDE 



An east-west extending chain of Valley Plains also 

 occurs on the Desert side of the Transverse Belt. The 

 Amboy, Rabbit Springs, Dale, Bristol, Newberry, 

 Twenty-nine Palms, Pinto Basin and the Chuckwalla 

 Valleys are examples. Little or nothing has been re- 

 corded concerning these most interesting areas. 

 They are primarily structural features from which 

 vast quantities of material have been removed by the 

 wind, and whose surfaces are veneered with various 

 sized outwash rock materials from the adjacent high- 

 lands. 



THE PENINSULAR HIGHLANDS 



The Peninsular Highlands include all the ranges and 

 valleys of the diversified, plateau divide between the 

 main body of the Pacific Ocean and the Gulf of Cali- 

 fornia. They extend for a thousand miles southward 

 and southeastward from the Transverse Belt as they 

 constitute the highlands of the southern portion of 

 our state and of the peninsula of Lower California. 

 The summit area is itself a varied region and consists 

 of many subordinate ranges and valleys like those of 

 San Jacinto, Santa Ana, Cuyamaca, Volcan and others 

 of the smaller northern part which lies in Southern 

 California, besides many others in Lower California. 

 The plateau also has many circular or elongated pot- 



