Lyells Travels in North America in the Years 1841 2
Lyells Travels in North America in the Years 1841 2
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I had passed several times over the Pyrenees and the Alps, and witnessed the changes of vegetation between the opposite flanks, or between the summits and base of those mountains; but this was the first time I had crossed a great natural barrier, and found on the other side people speaking the same language, and having pre- cisely the same laws and political institutions.
At the town of Union, which may be said to lie at the western foot of the mountains, I had an opportunity of seeing coal exp...osed to view in an open quarry of building stone. The coal seam was three and a half feet thick, with an intervening layer, as usual, between it and the freestone of dark slate or shale, four feet thick. When traced farther, the shale thinned out gradually, and in a neighbouring quarry, about thirty yards distant, it gave place to the yellow micaceous sandstone, which then formed the roof of the coal. These sandstone roofs are comparatively rare in Amer- ica, as in Europe.
From Union, we went to Brownsville on the Monon- gahela, a large tributary of the Ohio, where the country 128 LY ELL'S TRAVELS consists of coal measures, like those at Union, both evidently belonging to the same series as those more bent and curved beds at Frostburg.
What to read after Lyells Travels in North America in the Years 1841 2?
You can find similar books in the "Read Also" column, or choose other free books by Charles Lyell to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
I had passed several times over the Pyrenees and the Alps, and witnessed the changes of vegetation between the opposite flanks, or between the summits and base of those mountains; but this was the first time I had crossed a great natural barrier, and found on the other side people speaking the same language, and having pre- cisely the same laws and political institutions.
At the town of Union, which may be said to lie at the western foot of the mountains, I had an opportunity of seeing coal exp...osed to view in an open quarry of building stone. The coal seam was three and a half feet thick, with an intervening layer, as usual, between it and the freestone of dark slate or shale, four feet thick. When traced farther, the shale thinned out gradually, and in a neighbouring quarry, about thirty yards distant, it gave place to the yellow micaceous sandstone, which then formed the roof of the coal. These sandstone roofs are comparatively rare in Amer- ica, as in Europe.
From Union, we went to Brownsville on the Monon- gahela, a large tributary of the Ohio, where the country 128 LY ELL'S TRAVELS consists of coal measures, like those at Union, both evidently belonging to the same series as those more bent and curved beds at Frostburg.
What to read after Lyells Travels in North America in the Years 1841 2?
You can find similar books in the "Read Also" column, or choose other free books by Charles Lyell to read onlineMoreLess
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