Definitions
from The Century Dictionary.
- noun A rock consisting of trap; trap.
Etymologies
Sorry, no etymologies found.
Examples
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In the middle was the caldron of the torrent, called the “Scarfe,” with the sheer trap-rock, which is green in the sunlight, like black night flung around it, while a snowy wreath of mist (like foam exhaling) circled round the basined steep, or hovered over the chasm.
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The 16th of May saw us journeying over the plain which lies between Ugombo and Mpwapwa, skirting close, at intervals, a low range of trap-rock, out of which had become displaced by some violent agency several immense boulders.
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It comes from beneath the trap-rock, of which I shall have to speak when describing the geology of the entire country; and as it usually issues at a temperature of 72° Fahr., it probably comes from the old silurian schists, which formed the bottom of the great primeval valley of the continent.
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Immediately over our camp its waters ran over a very hard “trap-rock” of a black colour, the soil a stiff loam.
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The hill on which I stood consisted of trap-rock, and seemed to be almost the western extremity of
Journal of an Expedition into the Interior of Tropical Australia
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The summit consisted of trap-rock in nodules, and, towards the highest point, was much broken.
Journal of an Expedition into the Interior of Tropical Australia
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I rode to one and found it consisted wholly of trap-rock in nodules.
Journal of an Expedition into the Interior of Tropical Australia
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_The Weehawken Tunnel_ -- This tunnel is now being cut through the trap-rock for the New York, Ontario, and Western Railroad, and will be completed in a few months, but will, probably, be available as a mineralogical locality for a year to come.
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In many localities, the coals and lignites of different ages have been exposed to local influences -- such as the outbursts of trap-rock, or the metamorphism of mountain chains -- which have hastened the distillation, and out of known earlier groups have produced the last.
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Then he told them that good gravel, tough limestone and trap-rock were good road materials.
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