AREA NORTH OF BREECE FAULT. 239 



to the latter ; and the records of the depth of Wash in various shafts here 

 show that this ridge was formed by the south moraine of the Evans glacier. 



The Keystone (K-58), Uranus (K-53), Tiger bore-hole (K-47), 

 White Check (K-48), Tootie Gaylord (K-46), Big Six, and the lower 

 shaft of the Breece Iron have found White Porphyry immediately under 

 the Wash, the latter shaft being sunk into it for a depth of 350 feet, while 

 the Tiger bore-hole, at a depth of 500 feet, was, as well as could be ascer- 

 tained, still in it. 



On the upper northwest slope of Breece Hill are a number of shafts 

 in the Gray Porphyry, most of which have not gone through it, The 

 Fenian Queen, adjoining the road, passed. through 150 feet, respectively, of 

 Gray tind White Porphyry into the underlying Weber Shale. The Nora, 

 near the foot of the slope below it, reached the contact under the Gray Por- 

 phyry without finding any intervening White Porphyry. 



A group of shafts in the neighborhood of the Great Hope and Across- 

 the-Ocean find the Blue Limestone at a comparatively small depth, in general 

 not more than seventy to eighty feet, and the White Porphyry between it 

 and the Gray Porphyry is either very thin (fifteen to twenty feet in the 

 shafts above mentioned) or entirely wanting, as in the Bosco (K-28). 

 The Great Hope, after passing through these sheets of White and Gray 

 Porphyry, found 60 feet of vein material, and reached the Parting Quartzite, 

 here carrying gold, at a depth of 1 30 feet. On the other hand, directly west 

 of these~shafts, the Independent has been sunk 4"20 feet in the Gray Por- 

 phyry and the H. M. L. 160 feet without reaching the bottom, while the 

 Onota, which is 150 feet lower than the Independent, found vein material 

 at a depth of 400 feet, after passing through 300 feet of Gray Porphyry and 

 100 feet of White Porphyry. There is, therefore, evidently a synclinal basin 

 between the Great Hope and the crest of Yankee Hill, and also some indi- 

 cation that the contact sinks to the eastward before rising up under the 

 influence of South Evans anticline against Weston fault ; in other words, 

 that there is a slight ridge or secondary fold in the strata on the line through 

 these shafts, as shown in Section D, Atlas Sheet XVIII. 



The Little Prince, on this same line, but higher up on the slope of Breece 

 Hill, reached the Blue Limestone horizon, which is here represented by a 



