37 
They are seen in widest development to the west of Port Daniel, but in 
many places in the area of the Silurian strata small basal remnants of 
the conglomerate are well exposed. They invariably overlie the Silurian 
in angular unconformity as a more or less coarse, red conglomerate or 
breccia (in places the limestone blocks are from 3 to 10 feet across), showing 
that the Silurian and older rocks had been folded and considerably eroded 
before the Bonaventure intermontane deposits were laid down over them. 
These deposits appear to be of mountain desert valleys, and their remnants 
all appear to lie in pre-Bonaventure land hollows of the Silurian strata. 
Mountain making in Upper Devonian time, followed by erosion, 
making the marked unconformity seen in the Port Daniel-G&scons area 
between the Silurian and Bonaventure series. This is the well known 
Acadian disturbance. 
Silurian or Chaleur series, made up of the following divisions, in 
descending order: 
Indian Point formation 
West Point or Crotalocrinus limestones 
Bouleaux formation of thin-bedded limestones, coral reefs, and breccias; and 
shales 
Gascons or Taonurus muddy and shaly sandstones 
La Vieille limestone or Stricklandinia beds 
La Vieille sandstones and conglomerates 
Clemville formation 
Feet 
104 
1,445 
800 
1,800 
285 
170 
385 
Total Silurian 
5,079 
Disconformable contact (probable) between Silurian and Ordovician in 
the western part of the section, but in the eastern part of the area there is an 
angular unconformity between the Silurian and the pre-Ordovician strata. 
Ordovician shales, sandstones, and conglomerates. Thickness un- 
known. 
Mountain making seemingly at the close of the Cambrian, or more 
probably at the close of the Canadian, followed by land erosion, causing 
the marked angular unconformity between the later Ordovician and 
Silurian above, and the more or less metamorphosed and much deformed 
Macquereau series below. 
Macquereau quartzites, slates, etc., of unknown but very great thick- 
ness, seemingly best regarded as of Canadian time. 
STRUCTURE 
The Silurian of Black Cape area is clearly one limb of a great anticline 
that after the Acadian time of mountain making during the late Devonian 
appears to have made a very high mountain capped by great, rocky crags 
of basalt, the whole of which then may have stood 1 or 2 miles high. In 
its simplicity of structure is again seen the open folding type of the 
Appalachian mountains. In Port Daniel region, however, the Silurian 
strata to the east of Port Daniel Centre have their folds closed and squeezed 
into vertically . Furthermore, in this area of closest folding occurs the 
most marked fault, which extends from McGinnis cove eastward to east of 
Anse-4-la-B arbe, where in the Gros Morbe it passes out to sea. In 
McGinnis cove the eastern or Pillar Point block has dropped down about 
