(Francisco Kjolseth | Tribune file photo) Emily Kleber, a hazard geologist for the Utah Geological Survey, talks about how a sand boil formed near Saltair in the March 18 magnitude 5.7 earthquake that rocked the Salt Lake Valley. Using Lidar imaging, Kleber and her colleagues have mapped 739 miles of faults that have ruptured the surface along Wasatch Front.
Brian Maffly has worked for The Tribune off and on since 1994. Maffly roams Utah, covering public land and environment.