THE BLOUNT MOUNTAIN COAL FIELD. 19 



(6) Limy or Marble group, 45 feet. 



(5) Slate bed dark grey to black, 105 " 



(4) COAL good quality, 



(3) Flaggy sandstone and soft brown- stone, 100? " 



(2) COAL in Canoe Creek, ? " 



(1) Flaggy sandstone (estimated) 38 " 



Mi >un ta in Lim estone. 



These measurements and estimates are probably too low 

 in the aggregate ; they were made at the lowest gaps, where 

 the ascent of the mountain only was practicable. Besides 

 this, while ascending the mountain towards the northwest, 

 the dip of the strata, averaging about 10 n in the same direc- 

 tion, must be considered, this would carry the base of the 

 measures a good deal lower beneath the top of the moun- 

 tain than at its base. Hence it is considered that about 200 

 feet must be added to the measurements and estimates of 

 the foregoing section, thus bringing up the whole vertical 

 thickness to about bOO feet. In other words that from the 

 average top of the mountain would require a perpendicular 

 measure of 800 feet to reach the Mountain Limestone. 



SECTION III. 

 THE UPPER OR TRUE COAL MEASURES. 



Under this head are embraced all the known productive 

 measures in this coal field. All that lie above the First, or 

 Lower Conglomerate. The designation of this rock as the 

 First Conglomerate is preferred, because there are four dis- 

 tinct conglomerates in this field, and it is easier, and more 

 natural to designate and refer to them by their consecutive 

 numbers, and natural order, than by any other means. 

 These conglomerates are the guide lines, the geological land 

 marks in the study of a coal area. They separate each 

 series of coal seams from all others, and enable each to be 

 examined in detail with greater certainty. Hence, the study 

 of the conglomerate rocks of this field is first presented. 



