314 



DIP AND STEIKE. 



Many observers have supposed that these cleavage planes were the true planes of deposition, and that 

 there is therefore very great unconformability between the two rocks. The planes of stratification are cer- 

 tainly indistinct; but they show themselves most decidedly to the observer, as he sails past the Point at a 

 little distance from it. We are happy to be informed by Sir W. E. Logan that lie has examined this local- 

 ity, and has arrived at the same conclusion with ourselves in respect to the dip. 



From our note books, we find that upon Welden's Island, and upon Potter's Island, in the north part of 



Lake Champlain, there are, in addition to the strata, two sets of cleav- 

 age planes. The strata dip six degrees east, the cleavage planes dip 

 20 E. and 73 E. We have attempted to represent these three planes 

 upon Fig. 232 : a, a, represent the strata, which are a little more 



uneven in the drawing than in nature, in order to impress the distinc- 

 Section at Potter's Island. * , . , , , , 



tion ; o, o, o, 6, represent the two sets of cleavage planes. We have 



separated the lines to indicate cleavage more than usual in our representations, that their positions may 

 be clearly appreciated. 



DIP AND STRIKE OP THE STRATA. 



Locality. 



West Haven, post-office, 



West Haven, west of post-office, 



West Haven, east of post-office, 



Benson, south part, 



Benson, northerly part, 



Benson, north part, 



Benson, north line, 



Benson, north part, 



Orwell, village, 



Orwell, south of do., 



Orwell, Asa Young's, 



Orwell, east part, 



Orwell, east part, 



Shoreham, west of village, 



Shoreham, north part, 



Bridport, east of village, 



Addison, Cobble Hill, 



Addison, Cobble Hill, 



Bridport, northeast corner, 



Bridport, northeast corner, 



Weybridge, Wright's Monument, 



Addison, northwest foot of Snake Mt., 



Addison, northwest corner of Snake Mt., 



Addison, Snake Mountain, 



North Ferrisburgh, east part, 



Charlotte, northeast of village, 



Charlotte, Mutton Hill, 



Shelburne, west of village, 



Shelburne, west part, 



Shelburne, Pottier's Point, west side, 



Shelburne, do., east side, 



Shelburne, Pottier's Point, 



Shelburne, Pottier's Point, 



Milton, Lake shore, 



Strike. 



N. 10 E., 

 N.30E., 

 N. 10 E., 

 N. 20 E., 

 N. 20 W., 

 N.26 8 E., 



N. and S., 

 About N. and S., 

 N. 5 E., 

 N. and S., 



N. and S., 



N.20E. 

 N. 10 E., 

 N.80E., 

 N.25E., 



N. 20 E., 



N. 45 W., 

 N. and S., 



N. 10 E., 

 N. 80 W., 



Dip. 



22 E., 

 50 E., 

 40 E., 

 35 E., 

 33 E., 

 53 E., 

 35 E., 

 50 E., 

 10-12 E., 

 45-60 E., 

 25 E., 

 Horizontal, 

 50 E., 

 45 E., 

 85 E., 

 20 E., 



Dip east, 

 30 E., 

 10-20E., 

 40 E., 

 15 E., 

 10 E., 

 25-70 E., 

 15-20 E., 

 15 E., 

 Dip east, 

 10-60 E., 

 30E., 

 40 N., 

 10-15 E., 



Olserver. 



E. H., jr. C. H. H. and A. D. H. 



C. H. H. 



E. H., jr. C. H. H. and A. D. H. 



C. B. A. 



C. B. A. 



C. H. H. 



C. H. H. 



C. B. A. 



C. H. H. 



A. D. H. 



C. H. H. 



C. H. H. 



C. H. H. 



C. H. H. 



A. D. H. and C. H. H. 



C. H. H. 



A. D. H. and C. H. H. 



A. D. H. and C. H. H. 



E. H., etc. 



E. H., etc. 



C. H. H. 



A. D. H. 



E. H. 



C. B. A. 



C. H. H. 



C. H. H. 



A. D. H. and C. H. H. 



C. H. H. 



C. H. H. 



C. H. H. 



C. H. H. 



C. B. A. 



C. B. A. 



C. H. H. 



