SOUDAN FORMATION. 



217 



The workings at the Zenith, Sibley, and Savoy have not been extended 

 far enough to enable a final statement to be made as to the shape of these 

 ore bodies or the exact structural conditions under which they exist, or, 

 indeed, to warrant a positive statement that they may not eventually be 

 found to be connected with one another and possibly also with the Chandler- 



Fig, y. — Horizontal section tlirotigh fourth and sixtli levels of the Chandler 



Pioneer ore body. The Chandler-Pioneer ore body, as well as the ore 

 bodies to the east, occurs at the bottom and comes part way up the sides of 

 a narrow canoe-shaped synclinorium whose axis trends about 80° E. The 

 rocks in this vicinity have been very closely folded, and, indeed, slightly 

 overturned, so that at the west end of the Ely trough both walls dip at a 

 very high angle to the north. As the result of underground work, it is 



