The Falls of Niagara, Their Evolution and Varying Relations to the Great Lakes: Characteristics of the Power, and the Effects of Its DiversionDepartment of Mines, Geological Survey Branch, 1907 - 494 Seiten |
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Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
Algonquin American falls apex banks borings boulders breadth buried channel buried valley Canadian falls Canadian side cañon Cantilever bridge cascade cataract Chapter Chippawa Clair clay Clinton limestone cove cubic feet David valley deep channel depth descent discharge distance drainage drift eastern side edge elevation Erie basin excavated extending Falls-Chippawa valley feet above Lake feet per second floor fluctuations foot Foster flats Georgian bay Goat island shelf gorge height Hubbard point Iroquois Iroquois beach lake basins Lake Erie Lake Huron lake level Lake Ontario level of Lake lower mean Medina Medina shale miles mouth narrow Niagara escarpment Niagara falls Niagara limestone Niagara river Nipissing occur Ontario basin Ontario Power outlet of Lake Plate Port Colborne present rainfall reaching receded reduced refilled rise rocky sand sandstone shale shore line shown shows slope soundings surface survey Table Rock House Upper rapids volume western Whirlpool rapids
Beliebte Passagen
Seite 16 - Cataraquy; thence along the middle of said river into Lake Ontario; through the middle of said lake until it strikes the communication by water between that lake and Lake Erie; thence along the middle of said communication into Lake Erie...
Seite 415 - This wonderful downfall is compounded of two great cross-streams of water, and two falls, with an isle sloping along the middle of it. The waters which fall from this vast height, do foam and boil after the most hideous manner imaginable, making an outrageous noise, more terrible than that of thunder; for when the wind blows from off the south, their dismal roaring may be heard above fifteen leagues off.
Seite 423 - I stood, but above the water. When the wind carries the vapours from that place, the rainbow is gone, but appears again as soon as new vapours come.
Seite 425 - The fall of this vast body of water produces a sound which is frequently heard at the distance of twenty miles, and a sensible tremulous motion in the earth for some poles round*.
Seite 446 - ... the southern side there was a series of escarpments (some now submerged) with vertical cliffs facing the old channel. By recent studies of the elevated beaches, it is demonstrated that the disappearance of this valley is due to subsequent warpings of the earth's crust, and that the valley of the St. Lawrence was one with that of Lake Ontario. Recent discoveries of a deep channel, upon the northern side of Lake Ontario (a few miles east of Toronto), and of the absence of rocks to a great depth...
Seite 447 - The basins of Lakes Ontario and Huron are taken for consideration. The previous paper, upon the course of the ancient St. Lawrence, shows that the Huron and Ontario basins are sections of the former great St. Lawrence valley, which was bounded, especially upon the southern side, by high and precipitous escarpments, some of which are submerged. Upon its northern side there were lesser vertical escarpments, now submerged, with walls facing the old valley. The valley was excavated when the continent...
Seite 420 - Fall at the bottom, some of each of the several kinds of herbs, stones and shells they should find there : they returned in a few minutes, and I really thought they had fallen into the water ; they were obliged to strip themselves quite naked, and hang their clothes in the sun to dry. When you are on the other East side of the Lake Ontario, a great many leagues from the Fall, you may, every clear and calm morning, see the vapours of the Fall rising in the air ; you would think all the woods thereabouts...
Seite 415 - Niagara, which is not above a quarter of a league broad, but is wonderfully deep in some places. It is so rapid above this Descent, that it violently hurries down the wild beasts while...
Seite 448 - Trent valley, and the channel was from one to two miles wide. This, for a few miles, is cut across a drift ridge to a depth of 500 feet. With the continued continental uplift to the northeast (which has raised the old beach at the outlet...
Seite 418 - Fall is every where exceedingly steep, almost as the side of a hill. When all this water comes to the very Fall, there it throws itself down perpendicular! It is beyond all belief the surprize when you see this!