No. 1.] BAILEY — GRAND MANAN. 41 



Another feature in which these red sandstones resemble those 

 of the province of Nova Scotia, is to be found in their apparent 

 relations to the associated trap. At Dark Harbor the first named 

 rocks form a low terrace along and below the trappean bluffs, 

 which here form an almost precipitous wall of over four hundred 

 feet, and at their outer edge may be seen to dip towards the lat- 

 ter at an angle of about 20^^. The direct superposition of the 

 traps upon the arenaceous beds is not seen at this point, but I am 

 told that further South the line of contact between the two is 

 visible for some distance along the face of the shore-bluffs. * 



In reference to the nature and composition of the trappean 

 rocks in question, I have little to add to what has already been 

 stated by Dr. Gesner and Prof. Verrill. The best view to be had 

 of their structure is that furnished in the sea-cliffs which inter- 

 vene between Whale Cove and Long Eddy Point, constituting 

 what is known as the Northern Head of Grand Manan. Along 

 the western of the first-named indentation, these cliffs, having a 

 maximum elevation of about 240 feet, may be seen to consist of 

 alternating beds, from five to ten in number and varying from ten 

 to twenty feet in thickness, the thicker beds being composed of a 

 hard grey and greenish compact trap, which is sometimes colum- 

 nar, while the softer intervening beds are amygdaloidal. These 

 amygdaloids vary a good deal in texture as well as in colour, being 

 sometimes fine grained and sometimes coarse, and exhibiting 

 various shades of grey, green, red or purple. Their contained 

 minerals are calcite and the ordinary zeolites, frequently with a 

 considerable admixture of deep green chloritic matter, and more 

 rarely scales of black mica. Native copper is sometimes met 

 with, and considerable masses of this mineral are said to have 

 been found at different times in the superficial drift of the islands. 

 The zeolites are less perfect and in less variety than those of 

 Nova Scotia. 



Between the head of Whale Cove and Eel Brook the trappean 

 beds form a low synclinal, distinctly visible at a considerable dis- 

 tance from the shore. Northward of this brook, the stratifica- 



f These red sandstones of Grand Manan in some parts contain 

 considerable quantities of copper ores, which were examined and 

 described by Prof. E. J. Chapman of Toronto in a report with a sec- 

 tion, published in 1869. In this he refers the sandstones with their 

 associated traps to the Triassic or New Red Sandstone period.— Eds. 

 Can. Nat. 



