NATURAL HISTORY OF ICE SPRINGS VOLCANO IN MILLARD COUNTY, UTAH

Ice Springs Volcano (ISV) is located approximately 15 km west of Fillmore, Utah. It is part of the Black Rock Desert Volcanic (BRD) field, which has been active over the past 2.1 million years. Most volcanoes in the BRD have exhibited various forms of lava flows, including a maar (basaltic explosive eruption) type eruption. Ice Springs Volcano is the youngest volcano in the BRD, its most recent eruption and has been C-14 dated to 660 ± 120 years (Valastro et al., 1972). New Cl-36 cosmogenic dating puts this eruption at around 10,500 ±1500 years (Patzkowsky et al., 2017). This study assesses these different eruption dates using ecological rates of recovery and geomorphic feature analysis to determine the ecological impacts eruptions at these two different dates could have had on the local ecology, and impacts to Native American cultures in the region during those different times.This study also used pXRF to determine trace element (Ca, Ce, Cs, Cu, Rb, Rh, Sr, U, Yb) geochemical variations between each of the ISV lava flows to better understand temporal variations in magma composition and eruption style.