On a Group of Volcanic Rocks from the Tewan Mountains, New Mexico: And on the Occurrence of Primary Quartz in Certain Basalts, Temas66-71

U.S. Government Printing Office, 1890 - 34 páginas

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Página 48 - Microseismic shock: recorded by a single seismograph or by seismographs of the same model, but not by several seismographs of different kinds; the shock felt by an experienced observer.
Página 48 - VI. General awakening of sleepers ; general ringing of bells ; swinging of chandeliers ; stopping of clocks ; visible swaying of trees : some persons run out of buildings ; window-glass broken. "Severe;" '" very severe;" "violent." VII. Overturning of loose objects ; fall of plaster ; striking of church bells ; general fright, without damage to buildings. " Nausea felt /" "violent;" "very violent
Página 49 - VIII. Fall of chimneys, cracks in the walls of buildings. IX. Partial or total destruction of some buildings. X. Great disasters, ruins, disturbance of strata, fissures in the earth's crust, rock-falls from mountains.
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