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mountain cuts across them 

 and the flows at a low angle. 

 These synclines are shown 

 in Fig. 27. 



The Scots Bay formation 

 consists of calcareous white 

 or gray sandstone, frequently 

 replaced by chert, and green- 

 ish sandstone or shale. The 

 exposures are nowhere over 

 15 feet in thickness (Fig. 29) 

 and are remnants of a forma- 

 tion which once filled the 

 syncline of Scots Bay up to 

 the level of the Summit pene- 

 plain, as shown in Fig. 28. 

 The white sandstone, or 

 chert, rests directly on the 

 amygdaloid at the top of the 

 basalt flows, and veins of 

 chert run downward from the 

 sandstone into the amygda- 

 loid. The beds in any one 

 syncline do not match exactly 

 with those in any other, but 

 this condition is to be ex- 

 pected in basal beds of which 

 only a few feet are shown, 

 on the irregular top of a 

 lava flow. 



Fossils have been found 

 in the calcareous sandstones 

 by Haycock. They consist 

 of faint green markings, 

 probably plant remains; 

 worm burrows; fish scales, 

 bones, coprolites, and other 



