Strata of the Islands of Seeland and Mden, 



247 



by continuous layers of impure flint or chert, of an opaque brown or greyish 

 colour, and containing silicified zoophytes. A few nodules of chert occur 

 between the continuous beds of the same These beds are commonly not 

 horizontal, like the flint of the chalk below, but are arranged in diagonal 

 layers, often inclined at angles of 25° to 35° and more. (See fig. 2.) This 

 diagonal structure has not been caused by subsequent disturbance, but ap- 

 pears clearly, from analogy of form, to be due to the same causes which give 

 rise to diagonal lamination in sandy and other strata ; yet in this, and many 

 similar instances, the shape and inclination of the beds may probably have 

 been modified in some degree during the solidification of the mass, when the 

 flinty and calcareous matters were separating, and the zoophytes becoming 

 silicified. 



Fig. 2. 



Boulder formation 

 Breccia 



Upper Stevensklint 



Limestone and 



Chert 



Faxoe Limestone 

 and Clay 



White Chalk with 

 FUnts 



«0 «£3 <^ -C^ 



Q* 



Section in the Cliff near the Church of Hoierup, Stevensklint. 



The undulating lines in the annexed figure 2, represent tlie arrangement of the layers of chert 

 in a small part of the cliff, but it would require a much more extended view to give an adequate 

 idea of the manner in which these beds sometimes interfere with and cut off each other. The 

 height from the top of the cliff in this sketch to the bed of laminated clay, is about thirty feet. 



The upper Stevensklint limestone, above mentioned, forms an overhanging mass, the Faxoe bed, 

 though harder, weathering away more rapidly, and splitting naturally into small fragments. The 

 annexed sketch (fig. 3.) will show the outline of one of the small promontories, as seen in profile 

 projecting from the cliff. 



