Justin Mackey


Justin Mackey
207 Thaw
4107 O'Hara Street
Pittsburgh, PA 15260


My research involves measurement of  the low-temperature fractionation between U235 /U238 to better constrain a global oceanic anoxic event that occurred during the early Upper Cambrian referred to as the Steptoean Positive Isotope Excursion (SPICE).  Increased organic carbon deposition during this time correlates with a drastic change in the composition of the Earth's atmosphere and oceans.  The goal is to better understand the origin and duration of anoxia and if there are measurable regional variances in geochemistry within the Appalachian basin as a result.