Report on the Geology and Topography of a Portion of the Lake Superior Land District in the State of Michigan: Copper landsHouse of Reps, 1850 |
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Common terms and phrases
adit afford amygdaloid appearance bands bearing north belt bluffs boulders calc-spar Carp river chlorite clay cliffs coast compact trap Company composed conglomerate containing Copper Harbor crystalline depth distance district drift deposites east elevation epidote excavated explorations extended fissures gangue geological granite greenstone Harbor height hills hornblende hundred feet igneous rocks inches intersect iron island Isle Royale Keweenaw Point lake shore Lake Superior limestone lode mass metal Michigan miles mineral mines Montreal river mountains native copper nearly northeast northern northwest numerous observed occur Ontonagon river pebbles places Porcupine mountains porphyry Portage lake portion prehnite quarter of section quartz range 32 region ridge rises sand sandstone Saut seam seen shaft silver slope southern southwest spar strata stratification stream striæ sulphuret summit surface terraces thickness tons township 58 traced trap range trappean rocks traversed vein veinstone vicinity width
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Էջ 9 - THE groves were God's first temples. Ere man learned To hew the shaft, and lay the architrave. And spread the roof above them, — ere he framed The lofty vault, to gather and roll back The sound of anthems ; in the darkling wood, Amidst the cool and silence, he knelt down, And offered to the Mightiest solemn thanks And supplication.
Էջ 221 - Fault, in the language of miners, is the sudden interruption of the continuity of strata in the same plane, accompanied by a crack or fissure varying in width from a mere line to several feet, which is generally filled with broken stone, clay, &c.
Էջ 50 - As a general thing, fluctuations in the barometer accompanied fluctuations in the level of the water; but sometimes the water-level varied rapidly in the harbour, while no such variations occurred in the barometer at the place of observation.
Էջ 47 - As to the tides, it is difficult to lay down any correct rule. At one time we have found the motion of the waters to be regular, and at others extremely fluctuating. We have noticed, however, that at full moon and new moon the tides change once a day for eight or ten days, while during the remainder of the time there is hardly any change perceptible. . . . Three things are remarkable : 1st. That the currents set almost constantly in one direction, namely, towards the Lake of the Illinois, [Michigan,]...
Էջ 54 - The temperature of the water of Lake Superior during the summer, a fathom or two below the surface, is but a few degrees above the freezing point. In the western portion, the water is much colder than in the eastern — the surface flow becoming warmer as it advances toward th outlet.
Էջ 160 - ... broken fifteen feet from the ground, ten feet in circumference, which must have grown, ' flourished, and died since the earth in which it had taken root was thrown out. Mr. Knapp counted...
Էջ 9 - At the end of the half hour they went to seek him, and he was no more. The good missionary, discoverer of a world, had fallen asleep on the margin of the stream that bears his name. Near its mouth the canoe-men dug his grave in the sand.
Էջ 159 - He saw numerous evidences to convince him that this was an artificial excavation, and at a subsequent day, with the assistance of two or three men, proceeded to explore it. In clearing out the rubbish they found numerous stone hammers, showing plainly that they were the mining implements of a rude race* At the bottom of the excavation they found a vein with ragged projections of copper, which the ancient miners had not detached.
Էջ 7 - I have seen several such pieces in the hands of savages; and since they are very superstitious, they esteem them as divinities, or as presents given to them to promote their happiness by the gods who dwell beneath the water. For this reason they preserve these pieces of copper wrapped with their most precious articles.
Էջ 125 - It is on the rivers, and the boatman may repose on his oars; it is on highways, and begins to exert itself along the courses of land conveyance; it is at the bottom of mines, a thousand feet below the earth's surface; it is in the mill, and in the workshops of the trades. It rows, it pumps, it excavates, it carries, it draws, it lifte, it hammers, it spins, it weaves, it prints.