Senior Lab Staff
Stephanie Moore, Lab Manager
Stephanie oversees day-to-day operations by keeping the mass specs running, making sure the lab space remains tidy, and training new members.
Clive Jones, Research Scientist
Clive joined the research group in July 2013, bringing extensive experience with secondary ion mass spectrometry. Here, Clive is the research scientist in charge of our new Cameca ins 7f/geo instrument (which arrived Dec 2013). In this role, Clive spearheads our SIMS-based research investigating micro-scale variations in the carbon and sulfur isotopic composition of biological and sedimentary materials. In addition, Clive facilitates the development of new analytical approaches for the instrument.
Jennifer Houghton, Research Scientist
Jen joined the research group in October 2011. Her research projects revolve around biogeochemical interactions between microbes and their environment in complex modern systems, including mid-ocean ridge hydrothermal vents and hypersaline photosynthetic microbial mats. Current projects include investigating the kinetics and fractionation of intermediate sulfur redox species mediated by growth of key hydrothermal microbes, using biogeochemical models to visualize C and S cycling within complex microbial networks, and investigating the effect of diel cycling on C, N, S isotopes of biomass in layered photosynthetic microbial mats.
Maya Gomes, Postdoctoral Fellow
Maya joined the research group in August 2016 from Harvard University. She uses the biogeochemical sulfur cycle as a window into exploring how oxygen levels in the ocean and atmosphere have changed through Earth history and influenced evolutionary patters. In order to do this, she studies how the sulfur cycle interacts with the carbon, oxygen, and nutrient element cycles in modern systems. Then, she applies the lessons gleaned from the modern to the geological record. Previously, she focused on modern euxinic (i.e., anoxic and sulfidic) systems in order to explore biogeochemical changes associated with the deposition of black shales in ancient oceans under low-oxygen, anoxic, or euxinic conditions. Here at Washington University, she will expand this approach to study modern marine shallow shelf environments and microbial mats. She will use the results to probe the geological record for environmental information associated with major geobiological transitions in Earth history.
Morgan Raven, Postdoctoral Fellow
Morgan joined the Fike lab in October 2016 after finishing her PhD at Caltech. Her research focuses on the biogeochemistry of organic sulfur in both modern and ancient environments. At Wash U, she is investigating rocks from the Cretaceous Ocean Anoxic Events (OAEs) with a variety of new isotopic and spectroscopic methods to understand how sulfur cycling affects organic matter burial in sediments and how that might respond to global environmental change.
Roger Bryant, Ph.D. student
Roger is a 4th year student investigating small-scale isotopic signatures within modern and ancient sediments. His project focuses on modeling and lab work that investigates pyrite d34S variability as a function of depositional environment.
Jocelyn Richardson, Ph.D. student
Jocelyn is a 4th year student investigating micron-scale variability in isotopic signatures and abundances of sulfur species, specifically carbonate associated sulfate, within Ordovician carbonates. Her project focuses on petrography, x-ray spectromicroscopy, and SIMS to understand the depositional and diagenetic constraints on CAS incorporation and alteration.
Our lab is currently looking for new members! Please contact email@example.com with any questions you have regarding research or collaborative opportunities.