Report of Progress - Geological Survey of CanadaGeological Survey of Canada., 1879 - Paleontology Contents of each report may be found in "List of publications of the Geological survey of Canada. 1906." |
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Common terms and phrases
ALFRED R. C. SELWYN amygdaloidal angle anticlinal apatite appear argillites bank beds belt Brook Cape Cape Jones Carboniferous character Cherry chloritic clay coal coarse coast Coldwater conglomerates Creek crystalline crystals deposits described diorite distance east eastward epidotic exposures feet felsite felspathic fine-grained fossils fragments Fraser Geological glaciation gneiss gneissic granite greenish grey hills hornblende Hudson's Bay Huronian Island Kamloops Kamloops Lake Lake Winnipeg Laurentian layers lignite limestone lower mass mica micaceous miles mineral mountains mouth nearly Nelson River Nicola occur Okanagan Lake petrosilex places plateau Portage portion probably purple quartz quartzites range region Report resemble Richmond Gulf ridge road rocks sandstones schistose schists seen shales shore Shuswap Lake side Silurian Similkameen slates slaty slopes specimens strata stream striæ strike surface Survey syenite terraces Tertiary thickness Thompson trail upper valley veins volcanic westward Whale River
Popular passages
Page 14 - ... stratigraphy is found in the history of the Quebec group; and especially in the late introduction in it of the belt of supposed Potsdam rocks, about which I have already stated my opinion. In the reconstruction of the geological map of eastern Canada, — and in this I include the country from Lake Winnipeg to Cape Breton and Labrador — rendered necessary by the present state of our knowledge, I should propose to adopt the following divisions of systems to include the groups enumerated : —...
Page 3 - States, working in such districts as are occupied at the surface, or are underlaid at moderate depths, by the Cambrian and sub-Cambrian formations ; although no final demonstration has been accomplished by the author of those problems of superposition, unconformability, and identification, at which so many geologists are still half despairingly at work.
Page 15 - In many of the areas, especially the western ones, the base of this is well defined by unconformity, but in the Eastern Townships and in some parts of Nova Scotia it has yet to be determined. The limit between it and Lower Silurian is debatable ground.
Page 10 - ... this tract of country Mr. Vennor has followed and mapped, in all their windings and convolutions, the great series of Laurentian limestone bands first investigated and described by Sir WE Logan in the years from 1853 to 1856, more particularly in the Grenville region, and in 1865, by Mr. Macfarlane, in the Hastings region. The results and conclusions of all these earlier examinations are given in detail in the Geological Survey Reports. And these shew that the classification then adopted by Sir...
Page 15 - ... etc.) appearing as stratified masses and passing into schistose rocks is no proof of their not being of eruptive or volcanic origin: their present metamorphic or altered character is, as the name implies, a secondary phase of their existence, and is unconnected with their origin or original formation at the surface, but is due partly to original differences of composition and partly to the varying physical accidents to which they have since their formation been subjected. SELWYN...
Page 134 - ... representing moraine profonde, consist of sandy clays and sands, which have been arranged in water, and in some places contain marine shells. These, or at least their lower beds, were probably formed at the foot of the glacier when retreating, the sea standing considerably higher than at present. 3. Observations in the northern part of the Strait of Georgia, and the fjords opening into...
Page 12 - Huronian series" of the Georgian Bay, which, together with its close proximity to the western-most known exposures of the crystalline limestone series which we now know, extends from Parry Sound to Lake Nippising, and includes some labradorite gneiss, renders it very probable that a connection will eventually be traced out, between even these supposed greatly different formations, similar to that now, as already stated, proved to exist between the Hastings and Grenville series. * * * In the reconstruction...
Page 89 - In certain beds of the limestones of Marble Canon the Loftusia Mode of occurs almost to the exclusion of other forms, characterizing the rock, and having been the agents in its production just as Fusulinœ occur in the best examples of Fusulina limestone, or Globigertnœ in the Atlantic ooze.
Page 134 - Juan island, and the coast of the mainland. 2. The deposits immediately overlying the glaciated rocks, besides hard material locally developed, and probably representing moraine profonde, consist of sandy clays and sands, which have been arranged in water, and in some places contain marine shells. These, or at least their lower beds, were probably formed at the foot of the glacier when retreating, the sea standing considerably higher than at present. 3. Observations...
Page 20 - Company obtained nine tons of this ore from mimerons small openings which were made about three miles north-east of their establishment at Little Whale River : but it appears to be equally or more abundant in some spots in the same band of limestone on the south side of the river. This band is traceable to Richmond Gulf, at the entrance of which I found bunches of galena in it, which would weigh upwards of a hundred pounds. Specimens from ,the mine' on the north side of Little Whale River which I...