320 



Transactio7is. 



sandstone intercalations disappear. Altogether there are probably over 

 1,000 ft. of strata between the top of the lava and the base of the Amuri 

 limestone. The uppermost 60 ft. consists below of 20 ft. of pale-green 

 sandstone, passing up into bright-green glauconitic sandstone, and finally 

 into hard glauconitic limestone. There is some appearance of uncon- 

 formity in the overlying Amuri limestone (c/. p. 328). 



In the north-west wing of the anticline farther down the river the lowest 

 beds seen are about 200 ft. of sulphur mudstones. These are succeeded 

 by about 50 ft. of sulphur sands, of which the upper 15 ft. is glauconitic. 



a 



Fio. 5. — Junction of Clarentian and Amuri limestone, north-west wing of 

 anticline, Herring River, a, Amuri limestone; b, glauconitic sandstone; 

 c. mudstone ; d, brown glauconitic sandstone ; e, green glauconitic sand- 

 stones ; /, sulphur sands. 



The latter bed is apparently truncated at a gentle angle and overlain 

 imconformably by a thin bed of mudstone, which in turn is followed con- 

 formably by a glauconitic sandstone, 10 ft. thick, and that by the Amuri 

 limestone. The cliff in which this section is exposed cannot be scaled, and 

 the ground slopes away steeply at the bottom, so that it was difficult to 

 be certain of the unconformity. 



McKay recognized only tw^o " great sheets " of volcanic rock, and made 

 a collection of fossils from sandstones and pebble - beds resting on the 

 upper surface of the second sheet. The fossils determined by Woods were 

 Area {Bnrhatia) sp., Trigonia glyptica, T. meridana, Modiola haihourensis, 

 BeJemnites sxperstes. I did not recognize this bed, but a little way down 

 the river from the uppermost lava I picked up in the river-gravel a boulder 

 of conglomerate containing Trigonia glyptica. 



The upper beds are described by McKay as " soft grey sandstones, 

 and black, sandy, sulphurous, micaceous beds, -with cone-in-cone con- 

 cretions, overlaid by greensands, which, associated with thin beds of volcanic 



