DEEP WELLS IN MANITOBA. 



103 



obtaiued from it have been corrected by the uuiform subtractiou of nine feet, in order to 

 give them their proper position iu the total section. 



For the log of this well, with illustrative specimens, I am indebted to the kindness 

 of W. R. Baker, Esq , Superintendent of the Manitoba and Northwestern Railway, who 

 was one of those most deeply interested in the success of the well. 



The record as given below is compiled from the log kept by the driller and the results 

 of my examination of the specimens. 



Heigut of Surface at Bi>i;ing auovb Sua, 1300 Fkht. 



No. 



Description of Material passkd 



THROUGH. 



Soft, dark gray clay shale 



Fragmentai limestone 



Grey calcareous shale 



Dark grey fissile shale 



Coarse sandstone, with pyrites 



Compact white limestone 



Blue-grey clay shale 



White gypsum 



Red shale 



Shale and limestone 



Red shale 



Tliickness of 

 Ijiyer iu feet. 



95 



4 



1--M 



178 



19 

 120 



10 



15 

 110 



GS 



At 



Deptli of 



Ijottom of layer 



from surface. 



95 

 9i) 

 22::! 

 401 

 420 

 540 

 550 

 565 

 075 

 743 

 bottom. 



Height 

 above sea. 



1205 

 1201 

 1077 

 S99 

 SSO 

 700 

 750 

 735 

 025 

 557 



FORMATION. 



Pierre (Millwood Series). 



^Niobrara. 



Ben ton. 

 Dakota. 



|- Devonian. 



J 



No. 1. — Specimens from 30, 48 and 91 feet show this to be a soft, dark grey, non- 

 calcareous clay shale belonging to the Millwood series of the Pierre shales, similar to that 

 seen iu the naked and almost vertical cliffs washed by the river a few hundred yards 

 above the trail crossing. 



No. 2. — This is a hard band that was spoken of as "sandstone" by the driller. It 

 consists almost entirely of fragments of the prisms of the shells of a large Inoceramus, 

 mixed with fragments of Ostrea congesta ? This evidently represents the band of sand- 

 stone-like limestone that outcrops on the Assiniboine river below the mouth of Cypress 

 Creek, and is also seen at several places along the eastern face of the Riding Mountain. 

 It lies at the top of the Niobrara formation. 



No. 3. — Specimens collected from 146 and 164 feet shew this to be a mottled, blue- 

 grey, calcareous clay shale or marl. Under the microscope it is found to be mixed with 

 prisms of the shells of Inoceramus, fragments of the shells of Ostrea congesta ?, minute por- 

 tions of fish skeletons and quite a large number of foraminifera. These comprise such 

 forms as Glolngerina cretaœa and several species of Textnlaria, and with them are associated 

 many Coccoliths and Rhabdoliths. These evidently represent the characteristic shales 

 and marls of the Niobrara formation. 



No. 4. — Specimens obtained from 213-247 feet consist of a dark blue-grey, fine-grained, 

 unctuous, non-calcareous clay shale, breaking down into thin flakes. These represent the 

 typical Benton shales. 



