Bedrock 

 Basin 



Drainage 

 Obstructed 

 by Till 



Kettle 

 Hole 



Drainage Impeded 

 by Impprmeable 

 Marine Sediments 



Bedrock 

 Surface 



Swamp 

 Deposits 



Figure 2-25. 



Cross section of several types of wetland deposits on inland 

 topographic depressions. 



3. Lyman-Scantic-Peru. This soil association occurs along the entire 

 coastal zone from Portland to Eastport. The Scantic soils are 

 Inceptisols, mineral soils that have weakly expressed zones of 

 alluviation. The Scantic soils develop on marine clays on low 

 elevation surfaces. 



The minor soil associations are: 



1. Lyman-Histosols-Rock Outcrop. Thin soils developed on bedrock, thin 

 till deposits over bedrock, and organic deposits. These soils develop 

 on steep slopes, ridges, mountains, and coastal islands. 



2. Colton-Adams-Histosols . Colton and Adams soils have formed in coarse- 

 grained glaciof luvial sediments, are Spodosols, and are deep and 

 excessively drained. The Histosols in this association occur in 

 kettle holes and fringes of outwash deposits. 



3. Buxton-Salmon-Nicholville. These soils have formed mainly in fine- 

 grained marine and lacustrine sediments in the Kennebec and 

 Androscoggin River valleys. Buxton soils are deep Inceptisols, 

 moderately well-drained to poorly drained. Salmon and Nicholville 

 soils, Spodosols, are deep, moderately well drained soils having 

 alternating layers of very fine sandy loam and silt loam. 



2-48 



