THE PHYSICAL EVOLUTION OF ACADIA. 
9 
series westward along the coast of that province, found that 
hornblende schist and other volcanic rocks were intercalated; 
and with these were red and greenish slates such as are found 
in the corresponding rocks of Kings County, New Brunswick, 
so that there would appear to be a passage through such beds 
from the quartzites of the gold-bearing series to the dark-gray 
slates with intercalated whins and diorites found in New Bruns- 
wick. Or in other words, the sandy shallow water strata of 
eastern Nova Scotia gradually change to mud-beds in the deeper 
water which would then have prevailed to the north-west. 
Over eastern and central Nova Scotia a body of black and 
dark gray slates (‘‘Halifax formation”) overlie the quartzites 
of the gold-bearing series, and reminds one greatly of the graptolite 
schists of the older Palseozoic rocks. But these dark slates are 
folded in with the old quartzite series above named and form 
an integral part of it. They are to be paralleled with the fine 
slates in the upper part of the Lower Huronian in New Brunswick; 
the Kingston volcanic terrane which overlies them being younger 
and not occurring, so far as we know, in that part of Nova 
Scotia. 
No remains of animals or plants have been found in the 
Huronian of either New Brunswick or Nova Scotia; worm bur- 
rows, however, and some obscure markings are known in the 
quartzites of the gold-bearing series in the latter province. But 
as there are well marked indications of organic forms in the 
Laurentian rocks below, no doubt lowly forms of life existed 
through all these periods. The destructive effects of igneous 
or volcanic outbursts, which took place at this time in New 
Brunswick, may have obliterated all traces of the marine animals 
that then existed. 
Synopsis . — To sum up the physical conditions in Huronian 
time it may be said that there was in geographical sequence a 
condition of things similar to a portion of the geological sequence in 
the “Upper Series” of the Laurentian, of which we have previously 
spoken, corresponding to the two first formations named, only 
on an immensely greater scale as regards bulk. The Goldenville 
division of Nova Scotia represents the ocean shoal deposit, 
