PALAEOZOIC TERRANE BENEATH CAMBRIAN. 45 



with which the terrane begins, was restored. The resuUing in- 

 terraned conglomerate then sank, and clays and sands accumu- 

 lated, in which are buried the remains of the fauna mentioned 

 on a former page. From this point to the summit of the series 

 somewhat coarser accumulations of sand and clay continue. 



The Etcheminian terrane in New Brunswick, like the Cambrian, 

 contains two cycles ; each, in the Etcheminian, begins in a con- 

 glomerate, sands and fine shales follow, and then there is a re- 

 turn to coarser flags and sandstones toward the end. A similar 

 succession, but of finer sediments can be traced in the St. John 

 or Cambrian terrane,^ and to this condition there is an approxi- 

 mate parallel in Newfoundland. 



When one considers the softness of the Etcheminian sediments 

 at the time of the deposition of the Cambrian it seems alto- 

 gether likely that in the 1,200 feet of measures exposed on 

 Hanford Brook, the entire thickness of the Etcheminian may 

 not be represented, and this argument as to thickness also holds 

 in Newfoundland, where a lesser thickness of beds is visible on 

 Smith Sound, than is to be found in New Brunswick. 



At several localities in southern New Brunswick masses of 

 red shales, sandstones and conglomerates are seen, but as these 

 are not accompanied by Cambrian strata, and are not known 

 to contain definite fossils, there is no proof that any of them are 

 of Etcheminian age. 



3. The Newfoundland Sections. 



So often do we find the basement beds of a Cambrian basin 

 raised to a high angle of dip, or displaced by faults, leading to a 

 doubt of the regularity in the succession of the beds, that one 

 where the sequence is clear and continuous, and the dip low is de- 

 serving of careful examination. Such favorable conditions are 

 present in the western of the two Cambrian basins on Smith's 

 Sound in Trinity Bay, Newfoundland. Here the succession ap- 

 pears to be normal throughout, and besides the Etcheminian 

 strata, it contains a series of beds extending to at least the summit 



1 Division I and Division 2« belong to the lower cycle, and Division 2b and c and 

 Division 3 to the upper. 



