IN KOVA SCOTIA FLETCHER. 329 



possible extension of the coal seams beneath it. He showed 

 clearly that there is no recognized unconformity between the- 

 Millstone Grit and Coal Measures in Nova Scotia, that no beds 

 equivalent to the conglomerate are known in the southwest part 

 of the Pictou field, where the Millstone Grit is best exposed in 

 regular sequence under the coal measures, ami that the supposi- 

 tion that " the underlying strata of the Richardson seam rested 

 upon the conglomerate dipping to the southward," 1 which largely 

 led Dawson to put the New Glasgow Conglomerate at the base 

 of the coal measures, arose from an entire misconception of the 

 relation of this seam, (which lies high up in the coal measures, 

 1129 feet above the main seam), to the north fault. 



Mr. Poole showed further that although the conglomerate 

 apparently coincides in dip with the strata underlying it in the 

 district ot Pine Tree, its unconformity near the East River west 

 of New Glasgow is indisputable. In the country about Green- 

 hill, the Middle River and Plainfield, it rests only on metamor- 

 phic and Lower Carboniferous rocks. The Devonian rocks of 

 Waters Hill " are certainly not overlaid by deposits of an age 

 intermediate between Lower Carboniferous and the conglom- 

 erate," while the latter contains pebbles of strata evidently 

 newer than the Lower Carboniferous, regarded by Logan as 

 Millstone Grit, by Poole, as possibly upper coal measures. 



The coal measures are nowhere known to rest on the con- 

 glomerate and " the strata overlying it are, with the exception 

 of the till, the highest in the field," comparatively little dis- 

 turbed, everywhere comformable to it and in some parts of their 

 course holding fossils supposed to be characteristic of the upper 

 Carboniferous or Permian and Triassic. On the other hand, the 

 unconformity found below it is characteristic of the contact of 

 the base of those so-called Permo-Carboniferous rocks, as shown 

 on Dr. Ells' geological map of Cumberland County. 1 



> Trans. N. S. Inst. Sc.. Vol. II, Part 1, p. 96 and Vol. II, Part 2. p. 156. 



* O. S. C. Report for 1885, Part E. 



NOTE Reference to the m>vp accompanying Mr. Pooled paper on the Picto i Coal 

 Field. Tran. N. S. Inst. Sc.. vol. viii. (2nd ser.. vol. 1). p 223, will facilitate the under- 

 standing of these notes on the New Glasgow Conglomerate On Mr. Poole a map the 

 limits of that Conglomerate and of the other rock-formations of the coal-Held are well 

 defined. 



