DEEP AYELLS IN MANITOBA. 



93 



The following is a synopsis of the log as at present determined :- 



Height of Surface in Febt Above Sea Level, 1,644. 



No. 



DESCRIPTION. 



Black soil 



Clay, wilh some small pebbles 



Hard blue clay, with pebbles 



Fine black sand and grave! 



Light blue-grey shale 



Black sand, with water 



Blue shale 



Soapstone, with thin layers of lime rock. 



Blue claj', with round " bouUhra " 



Dark blue-grey shale 



Grey shale 



IMottled grey calcareous shale 



Dark non - calcareous, or but very 

 slightly calcareous, shale 



Grey calcareous shale 



Dark non-calcareous shale 



Thicknes.s 

 of Ijiyer 

 in feet. 



:}' 



3 

 30-5 

 5G-5 



4 



56 



•5 



235-5 



401 



188 



75 



25 



200 



135 



]S'> 

 205 



FORMATION. 



Irieis 



tooenc. 

 91 feet. 



Pierre. 

 (Odanali Series.) 

 292 feet. 



Pierre. 



(Millwood Serie.s.) 

 GG4 feet. 



Nioljrara. 

 545 feet. 



Benton. 



Nos. 1 and 2. — These are not improbably stratified deposits laid down in the bottom 

 of the post-glacial Lake Souris, which stretched northward from Turtle Mountain and 

 covered the country for many miles around Deloraiue. Near the foot of the mountain the 

 land in places becomes grayelly, and occasionally a few boulders are scattered over it. A 

 couple of miles south of Deloraine the surface rises in an easy slope for about fifty feet to 

 a wide, even terrace that runs back to the base of the higher and rougher portion of the 

 mountain. It clearly represents one of the shore terraces of an ancient lake, but the 

 extent of the lake has not yet been clearly defined. 



No. 3. — This is undoubtedly a hard blue-grey unstratified till with pebbles and 

 boulders. Similar till has been thrown out of the railway tank well at the Deloraine 

 station, which was dug to a depth of a hundred feet, passing through the Pleistocene 

 deposits into the underlying cretaceous shales. 



No. 4. — This bed would appear to be a coarser grained till, but whether it differs in 

 age from the till overlying it is uncertain. At the bottom of this layer a moderately 

 strong How of water was obtained, rising- to within twenty- five feet of the top of the well. 

 It is more or less impregnated with sulphate of soda. 



No. 5. — A light blueish-grey, moderately hard, non-calcareous clay shale, typical of 

 the Odauah series. Excellent specimens of this shale were obtained from the railway 

 tank well, a few hundred yards to the west. This series has already been described by 

 the writer,' and was previously very well described by Dr. G. M. Dawson - as the upper 

 portion of his Pembina Mountain C4roup from exposures in the valley of the Pembina river, 

 etc. During- the past summer the same formation was traced in the valley of the Assiui- 



' " The Cretaceous of IManitoba," by J. B. Tyrrell, ' Am. Jour. Sci.,' 3rd series, vol. xxxx, p. 227. 

 " Geology and Resources of the 49th Parallel,' by G. M. Dawson, Montreal, 1878, pp. 81-85. 



