BULLETIN OF THE GEOLOGICAL SOCIEtY OF AMERICA 

 Vol. 28, pp. 323-334 JUNE 11, 1917 



l)l^]F()l?MA^ri()N OF TTNCON^SOLIDATED BEDS TN NOVA 

 S(!0M1A AND SOirPIIDIJN ON'PAhMO ' 



m- i;. A(. Ki\i)i,i': 



{Ihuid he fort' the i^DCU'tij Dcccinhcr :!U , lUlii) 



(U)nti:nts 



l*age 



Purpose of the \yA\nn- 323 



Deposition and erosion in tlie Bay of Fnndy 323 



Sediments of the Avon and other rivers 326 



Artificial deformation of soft beds 327 



Explanation of the disturbed beds of Avon River 332 



The cliffs of Port Rowan, Ontario 332 



Purpose of the Paper 



Deformation in which a few feet or a few inches of a section have been 

 crumpled and contorted without disturbing the adjacent strata attracted 

 the notice. of geologists as early as 1846, when Eminons- described the 

 distur})ed clays at Albany, New York. Although a number of examples 

 of this phenomenon have been desci'ibed and various explanations of it 

 offered, the subject appears to be still open to experimental investigation. 



It is proposed in this paper to cite two examples of contorted beds 

 which have come under my notice and to describe some exixM-inients which 

 illusti-ate the pi-inciples involved in (-(M-Jnin classes of contoricd beds. 



Dki'osi'I'ion and J<]i{(),si()n in TiiK Hay ok Ei^ndv 



Deposition and erosion both proceed with great rapidity on the mud- 

 flats about the estuaries of the Bay of Fundy because of the strong tidal 

 currents and the great volume of suspended sediment in the waters. A 

 considerable part of the load of fine silt is dropped at each flood tide, 



' Manuscript received by the Secretary of the Society .Tanuary 29, 1917. 



IMiblishcd with the permission of the Director of the Ocoloftica! Siii-vey of Canada. 

 "Hrniarks on tiic (Irifl lu-riod. Am. Qiunl. .lour. Aj-ric Miid Sci., vol. 0, 1S47, p. 21.S. 



(323) 



