Show S. S L L. HELD NEAR QUAKE CENTER Experts Think Shake Caused by Basin Range Faults University of dr Utah t h expertS experts d. d Salt Lake w was wa S close to the center of ot the earthquakes that Monday morning morning morn morn morn- ing shook northern Utah southern Idaho and southwestern Wyoming The shocks were apparently er cc in Salt Lake tha than any oth other r affected af af- af region Dr Frederick J. J Pack head of the university geology depart depart- department ment said This leads to a belief th the quakes were caused awed by one of th the range basin faults between the Wasatch Wa Wa- aten satch mountains and the Sierra Ne- Ne vadas There are at least a score of these range basin faults running north an and south The nearest is on the west sid side of ot the Oquirrh range It seems the disturbances disturbances dis dis- dis were caused cawed by basin range faults since the shocks were strong at Burley Idaho out of ot range rang o 0 f the Wasatch fault The fact shocks died out toward toward towar the west indicates the disturbance was loca local Dr Pack said quakes in Salt Lake Lak usually are arc stronger downtown because because be be- cause of the type of ground Old sed sediments sedi sedi- ments merits of Lake Bonneville arc are thick thic in the downtown region and undulate more tha than bedrock on the east bench he explained This quake does not mean there ther will vill be another soon but Utah pee peo pie should become earthquake minded mind mind- ed cd Dr Pack said The Tho Wasatch an another and other faults are here hero and it is not improbable improbable im im- im probable we will have more However However How How- ever Salt Lake is not in an In earthquake earthquake earth earth- quake zone such as ail Los Angeles am and San Francisco where conditions ar arVery are Very active One year ago Monday Dr Pack was in Long Beach studying causes cawes of th the earthquake disaster there F. F F F. Intze HIntze associate professor o or of geology said Salt Lake appeared close clos to the epicenter and that the movement movement move move- ment probably was Wa c caused used by the Wasatch Wa Wa- satch or other fault lines Unes in Utah Hyrum m Schneider pr professor of geology geology ge ge- expressed a similar belief but bu added that the quake might have been caused cawed by Idaho faults which recently have been active |