402 



EARTH FEATURES AND THEIR MEANING 



lines and extremely low banks. Under these circumstances, they 

 are soon filled with a rank growth of vegetation, so that it is some- 

 times difficult to properly distinguish lake and marsh. 



Lakes 



Marsh 



FIG. 430. Map and diagram to bring out the characteristics of newland lakes. 



Basin-range lakes. Newland lakes may be said to have their 

 origin in an uplift of the land and sea floor near their common 

 margin. A lake type dependent upon movements of the earth's crust 



FIG. 431. View of the Warner Lakes, Oregon (after Russell). 



but within interior areas has been described as the basin-range 

 type and is exemplified by the Warner Lakes of Oregon. In this 



