Marine geochemistry encapsulates the pursuit of paleoclimate reconstruction, for an understanding of both past conditions and implications for current trends. My undergraduate thesis research employed the methods of foraminifera micropaleontology to establish a proxy for Cenozoic climate; I used microscope picking of T. Sacculifer and G. Ruber, multistep sterile preparation procedures, and mass spectrometry to turn two years of research into a detailed trace element profile that characterizes absorption of in-situ ions into the calcareous foraminiferal shell structure.