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71. A Mighty Glacier in Norway
A Mighty Glacier in Norway
Description
Image Description from historic lecture booklet: "Another example of the Alpine type, with a terminal moraine shown in the foreground."
72. Sources of These Great Glaciers on the Slopes of Mt. Rainier
Sources of These Great Glaciers on the Slopes of Mt. Rainier
73. The Great Glacier near Banff, Canada
The Great Glacier near Banff, Canada
Description
Image Description from historic lecture booklet: "The Illecellewaet glacier. This is an inherited basin glacier, in which the inherited topography has exercised a greater influence upon the glacier form than has the auto-sculpture."
74. Glacial boulder and glacial scratches, Bronx Park, New York
Glacial boulder and glacial scratches, Bronx Park, New York
Description
Image Description from historic lecture booklet: "Many of the boulders and pebbles of the till are found to be glaciated, or marked with parallel scratches. Often they look as if engraved with a sharp need. Sometimes the scratches are deep and rough. A marked polish is seen on some stones. If we dig through the subsoil to the bed-rock, we shall often find the latter scratched in the same way, or even deeply grooved and carved into fluting's and the folding. The glacier, shod with stones at its base, drags these over the bed-rock, and thus both the moving fragments and the floor over which they move are polished and graven. The direction of the scratches corresponds to that in which the erratic boulders have been moved, and so, putting these other facts together, we have full proof that glaciers have done the work."
75. The Drift
The Drift
Description
Image Description from historic lecture booklet: "If we examine a field in Maine or New York, or norther Indiana, or Iowa, we shall find the stones, the soils, and the subsoil's often consisting of different material from the underlying bedrock. Pebbles and cobblestones, small boulders and great ones, even to hundreds of tons in weight, are scattered over the surface or buried in the finer waste. Bedrock like these loose stones may be found 10, 20, 50, or even some hundreds of miles away. these are "erratic" or strayed boulders. once moved by a glacier. as the Malaspina Glacier is now carrying stones from Mt. St. Elias to the sea-border."
76. Crevasse
Crevasse
Description
This is another treacherous crevasse which mountain climbers must constantly be on the lookout for.
77. Eliot Glacier on Mt. Hood
Eliot Glacier on Mt. Hood
Description
On the climb we turn aside for a look into the crevasses of Eliot Glacier in the midst of a sea of snow and ice.
78. Alpine Glaciers
Alpine Glaciers
Description
Image Description from historic lecture booklet: "Of the three great classes referred to above, the most widely known is the alpine type, which derives its name from the mountains of central Europe, where it was first studied. Alpine glaciers occur about high peak and on the summits and flanks of mountain ranges in many parts of the world, but reach their most perfect development in temperate regions. The Himalayas, the Alps, the mountains of Scandinavia, the Southern Alps of New Zealand, the Cordilleras, etc., furnish well-known examples. Glaciers of this type originate as a rule in amphitheaters and cirques, partially surrounded by lofty peaks and overshadowing precipices, and flow through rugged valleys leading from them as winding ice rivers which carry the excess of snow falling on the mountains into the lower regions, where a higher mean annual temperature causes it to melt. They are essentially streams of ice, formed usually by the union of many branches, and end abruptly when the drainage changes from a solid to a liquid form."
79. Piedmont Glaciers
Piedmont Glaciers
Description
Image Description from historic lecture booklet: "Glaciers of the piedmont type are formed where alpine glaciers leave the rugged defiles through which they flow and expand and unite on an adjacent plain. They may be considered as analogous to lakes, for the reason that they are fed by tributary ice streams."
80. Ice caves at end of Nisqually Glacier, Mt. Rainier
Ice caves at end of Nisqually Glacier, Mt. Rainier
Description
Image Description from historic lecture booklet: "The base is about 500 feet in front and the walls of lava which bound its sides rise from 1000 to 1500 feet above the surfaces of the ice, generally in sheer precipices."
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