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Show EARTH IS SHAKEN Br SUPOF FAULT Great Piece of Wasatch Range Moves a Fraction and Jolts Valley- Ages and ages ago, perhaps when diuosaurs wero only pollywogs in size, a slico of tho west side of the Wasatch range begau to blip. Intermittently, through the succeeding ages, this west side of tho Wasatch fault plane., as scientists know it, slipped down and the east side slipped up. Thcso slips bavo a real name of their own, too. Tectonic displacement is tho formal and formidable appellation. Ml of which may seem loroigo to any placo but a geological classroom. But it isn't. There was one of the Blips yesterday. yes-terday. The uninitiated called t it an earthquake. It was, generally speaking, but scientifically speaking it was a tectonic displacement. But it was only tho dying gasp, as it were, of tho alms !of former ages. It was, according to I Professor FYed J. Pack of tho Umver-I Umver-I pity of Utah, one of tho last that will I be Tocorded in all probability. The fciamograph at the University 1 recorded a slight disturbance, beginning nt 9:01)3.5 o7clock yesterday morning and contiuuing for almost exactly one minnte. A fow perhaps felt it, at least omc said they did. In Ogden the shofk was felt for about two second?, accord-in: accord-in: to advices from there. "Tho earthquake was undoubtedly purely local," snid Professor Pack last night. "Ages ago a great cnistal block on the wesicrn slope of the Wasatch cracked nwnv. H extended from the site of Nepal to tho sit" of Collinston. a distance of about 120 mile. Inter-mittentlv Inter-mittentlv thereafter the block slipped down. Now its movement la practically all past- Tho shock yesterday was prob-ablv prob-ablv one of the last movements of that block. Earthquakes are caused by volcnnoe and tectonic displacement, o tho slipping of erustal blocks, such as tho one from tho Wasatch, Wo bavo no volcanic disturbances to cause earthquakes, earth-quakes, and we will have but little more of this tectonic displacement." |