64 — The Sea 
the influence of geological processes of pressure, chemical 
action, folding, etc., that they are classified in a special class 
all by themselves. 
The ocean shores are made up of different rocks the world 
over, and exhibit a wide variety of forms; from the broad 
sandy beaches of Florida to the iron-bound rocks and cliffs 
of Norway. 
HOW A SHORE IS MADE 
In studying a coast line one should not regard what he ob- 
serves as a Static state of being. He should attempt to inter- 
SHORES 
DB MMMM 
AVANT 
/ 
/” HARD ROCK YY 
SOFT ROCK 
pret what he sees as one step in a geologic process which is 
continually going on even though slowly as man measures 
time. The main processes which occur on coast lines are (1) 
marine denudation; (2) marine deposition, and (3) earth 
| 
movements. The nature of a coast line has much more mean- — 
ing if one seeks to understand which of these processes is 
operating. 
