3IO WALCOTT 



east of Hickmans Harbor Point. At HIckmans Harbor Point 

 the Signal Hill conglomerate of the Avalon series is well ex- 

 posed, and above, to the eastward, the Random terrane. The 

 summit of the latter is very beautifully shown at the slate quar- 

 ries about half a mile east of Hickmans Point, where the strike 

 of the upper bed of the Random sandstone is N. 50° E., dip 

 70° S.E. Immediately on this band of reddish-tinted sandstone 

 there is a thin layer of conglomeratic limestone that forms the 

 basal bed of the Cambrian. (Plate XXVI.) 



Random Sound Section^ upward. — Inches. 



I a. Conglomerate formed of small pebbles of the subjacent 

 Random rocks, and small quartz grains and pebbles, all 

 cemented together by a fine calcareous sandy matrix. 



Often there is scarcely a trace of calcareous matter 6 



Fossils : 



Slender tubes of Coleoloides and fragments suggesting 

 Arch ceo cya th us . 



Feet. 



lb. Reddish-purple sandstones capped by coarse-grained gray- 

 ish-purple sandstone 6 inches thick 3 



Inches. 



ic. Pinkish-colored limestone with Coleoloides 6 



Feet. 



id. Reddish-purple argillaceous shale 10 



le. Purple to pink, hard, irregular, arenaceous limestone i}^ 



Fossils : 



Coleoloides^ and sections of what appears to be a small 

 Obolella-WVie. shell. 

 if. Green and reddish-purple argillaceous shale in broad bands. 

 At 140 feet up nodular limestotie appears, and at 170 

 feet a band of pinkish-colored limestone 6 inches thick 



with Coleoloides 171 



A change of dip and overturn occurs here, which breaks 

 the section and cuts out probably 100 feet or more of the 



shales. Estimated 100 



ig. Green argillaceous shale 4^ 



ih. Reddish-purple argillaceous shale 98 



I i . Greenish argillaceous shale 84 



ij. Pinkish-colored, massive-bedded, nodular limestone 6 



Fossils : 



Hyolithes -princeps^ Coleoloides typical is, also numer- 

 ous fragments of small Hyolithes, of which, owing to the 

 cleavage of the limestone, it was impossible to get good 

 specimens. 



