LAGOON-MARSH AND FILLED STAGES. 



415 



ance. The curve on the right side of Marrowstone point changes from 

 a concave to a convex form so that it gives that side of this foreland a 

 snubbed look. 



Sand point, projecting into Popof strait, Alaska (C. S., 8891), is a fairly 

 typical example of a cuspate foreland with inclosed lagoon. The point 

 is here somewhat blunted, more on the southern than on the northern 

 side. This foreland as mapped is 



Gasp ee Point 



£00 



very evidently a piece of made 

 land built forward in the process 

 of shore development. 



A typical example is seen in 

 New Dungeness harbor, Washing- 

 ton (C. S., 646), where inside of the 

 beautiful hooked spit forming the 

 harbor the foreland projects with 

 a very sharp point. 



Gaspee point (figure 9) in Nar- 

 ragansett bay (C. S., 3047) may be 

 taken as a tj^pical example of this 

 lagoon-marsh stage. 



A rounded cusp with com- 

 pletely inclosed lagoon occurs 

 near the mouth of Horup bay 

 (Germ., 24 ; Denm., Faaborg). 

 Upon the same sheet there is a 



typically sharp pointed cusp pro- figure (^.-Lagoo^i-jnarsh stage. 



jectingfrom the north end of Aro island. This projects at right angles 

 to the general shoreline, but the belt of water is here so wide that the 

 wind-made currents probably have as much controlling influence as the 

 tidal, possibly more. 



FILLED STAGE. 



Dunge Ness point, on Romney marsh, England, is a cuspate projection 

 into the English channel (Eng., 4). The direction of transportation of 

 detritus is from the west around the point.* 



This foreland seems, on account of the large marsh areas included, to 

 have passed through a V-bar stage, but the aggradation lines of growth 

 at the point, which has changed its position since records have been kept, 

 suggest that the second method of growth, mentioned below, has suc- 

 ceeded the first at the point. 



* W. Topley : Geol. of the Weald, 1875, pp. 211, 303 ; F. Drew : Romney Marsh, Mem. Geol. Sur., 

 Eng. and Wales, 1864. 



XLIX— Bull. Geol. Soc. Am., Vol. 7, 1895, 



