Fisher. — River Terraces. 
PLATE 2. 
Profiles of West River terraces. 
Sections made from survey map (plate 1). Show that terraces left after 
the river has swung several times across its valley will vary in width, and 
that they stand as remnants of the flood plains. Also they show that the 
lateral swinging of the meandering channel is very much faster than the de¬ 
gradation of the valley floor. 
The ideal profile, showing terrace levels along the lines A-B and C-D, 
demonstrates that high scarps are the sum of two or more lower scarps. They 
are produced when the river swings more widely, undercutting the lower 
terrace plains. 
