GULLIVER. — SHORELINE TOPOGRAPHY. 169 



probable explanation of their origin that they represent the areas reduced 

 close to baselevel during tlie previous cycle, when the land mass stood 

 higher and was dissected to maturity. Such lowlands would be slio-htlv 

 cloaked over during a gradual submergence. Such slow depression is indi- 

 cated by the bays almost filled by deltas with no bay-bars at their mouths. 

 A period of gradual sinking, slow enough to allow delta growth to fill the 

 valleys as they went under water, and fast enough to prevent much cutting 

 of cliffs and building of bars, w ould account for the existing combination 

 of initial shoreline with bays nearly delta tilled. 



Infantile islands, minutely irregular shoreline, projecting headland, and 

 unfilled bays are characteristic of the southern portion of this area. The 

 depression has no doubt varied slightly in time and amount in different 

 portions of this region, but as a whole it is a remarkably good examjile 

 of drowned topography close to its birth. 



Other Exaniples. — A few other examples of drowned topograjohy that 

 have advanced but slightly from their initial stages are here given, with 

 but a word of comment in the several cases. Special features in these 

 areas which show an advance from the initial condition are considered 

 later under the several headings in Part II. All these regions taken 

 together with Austria, the type of longitudinal drowned topography, give 

 an idea of the various types of forms resulting from the drowning of sub- 

 aerially carved topography. In several cases the depression may not 

 have been absolutely uniform. 



Tlie beautiful Cliristiania river system devclopcrl to adolescence before drowning 

 (Nor., P, A, B, C, D ; 10, A, B, C, D ; 14, B, I) ; 15, A, C ; 19, B, D ; 20, A). 



The meandering valley form of Kolding fjord argues strongly for submer- 

 gence of subaerially carved topography (Uenm., Fredericia, Bogense, Skamllngs 

 Banke). 



The meandering valley above Haderslebener lake is continued in Haderslebencr 

 fjord with swings of proportional radius of curvature (Germ., 7, 12, 13), 



The drowned valley of tlie Warnow river below Rostock is about the same size 

 as that above the city (Germ., 8G). 



Greece and the coasts of the iEgean sea (Atlas Univ., 40; Attica; maps in Der 

 Peloponnes). Dr. Philippson has shown in his monograph on tlie Peloponnesus 

 that tliis region is dissected into many blocks by diastrophism.* This causes rocks 

 of differing resistance to be near one another; thus on this account, and also 

 because of the stronger sea action in certain places, one finds adolescent develop- 

 ment replacing the more common youthful forms upon the coasts to the north. 



Clarence strait, Revillagigedo channel, and Portland canal, Alaska, show the 

 typical ramifications of subaerially carved topography (C. S., 8100, 700). 



* Der Peloponnes, 418-432. 



