Show BRIEF EARTH SHOCK H GK IS I FELT FELTIN FElTIN I IN SiLT SALT Al T lAKE Disturbance of Tuesday I Morning Is Recorded at University of Utah CAUSED BY SLIP i OF WASATCH FAULT Dr F. F J. J Pack Discusses Phenomena From a aI I Geological Standpoint An earthquake of or moderate In Intensity Intensity In- In occurred close to Salt Lake City at 1 30 o'clock Tuesday mornIng morning morning morn morn- ing according to Ralph Mitchell seismograph observer er at the Uni University tint tint- of ot Utah The seismograph revealed re the duration of ot the shock to be one half minute Evidence of ot the shock was a abrought I brought to the attention of ot the university university uni uni- authorities by Samuel K I Kellock of ot 1357 Third avenue Mr Kellock said a a. distinct tremor trem trem- or at 1 30 Mr Mitchell l said the shock was probably caused by a slipping sUppIng of or orthe the Wasatch fault tault plane Utah has reached the stag where here she can boast of her faults Dr Frederick J. J Pack head of ot the department of or geology at the University Uni Un- of ot Utah declared Tues Tuesday ay I morning in discussing causes of or the slight local earthquake that was felt feltIn feltin In Salt Lake at 1 30 o'clock Tuesday Tuesday Tuesday Tues Tues- day morning The disturbance was sufficient to disarrange pictures on walls wails of or residences in the southeast district to rattle window panes generally throughout the city and to agitate the feeling of ot security of ot many citizens cit who ha have 0 besieged Dr Pack with tele telephone hone queries during the day regarding the probability of or a serious tremor The shock which was of ot moderate moderate ate Intensity and nd lasted not mora more than thre three quarters quarters of ot a a. minute was was' undoubtedly caused by a slight ot Wasatch fault plane plane according to Dr Pack P ck Who attributed attrib- attrib i It to be a minor aftermath of ot otI o oI I I disturbances that haye have occurred on onI 1 I the W Wasatch atch t fault plane In varying degrees of or intensity during the past pastI million years NO PRELIMINARY WAVE I No preliminary wave was walO recorded record record- ed on the seismograph at the university university uni uni- thus leading heading Ralph Mitchell l I seismograph observer to believe the seat of ot the disturbance wa was on the tho 1 plane directly back of ot th the campus The Wasatch fault plane Is Js a a. along along I long south north rift rUt of ot fracture fracture I beginning at Nephi IK ha the south routh and extending along the western base of ot the Wasatch mountains to toa toi i a a. point near Utan a dis tance lance of ot about miles Dr I Pack explained I The westerly block of ot the WaI VaI Wasatch Wa Wa- I satch fault tault has been through a distance of ot not less than I feet This great displacement I lIs Is not the result of ot a single movement move nove- ment but rather of or many distinct movements which hav have occurred I over a n period of ot time approaching lone one million years ears The time of or the greatest disturbance was at the beI beginning beginning be- be I ginning of ot the period when the tho thoi I i Continued o on page 2 BRIEF QUAKE PANES SHAKES WALLS Continued from page 1 m mountain ranges were Vera undergoing most rapid development SLIPS INFREQUENT We are living now In In Ina a a time w ted movements have more or less ceased However these disturbances will continue for lor hundreds of ot yea years to come No violent disturbances h have ve been felt since the alle valley was inhabited although some years prior to the cominS' cominS of ot the pioneers a very very violent shock Is evidenced evidenced evidenced evi evi- by gravels c collected at the mouths of ot the Cottonwood od canyons canons at Becks Beck's hot springs springs' and at at other numerous numero s points along the fault tault Measured by tn the tn amount of ot di dip ii placement the earthquake would have exceeded in intensity the San Francisco disaster of or 1906 We Ye suggest however that there Is no cause for any anxiety of ot future fu future future fu- fu ture serious tremors for while many minor disturbances of ot last nights night's type will probably occur again there is no reason fO for be believing believing believing be- be lieving that disastrous types will willbe willbe willbe be repeated in the immediate fu- fu u- u ture he concluded j |