People:

Faculty


Postdoctoral Scholars
Dr. Datu Adiatma (postdoc)

Datu received his Bachelors in geology from Institut Teknologi Bandung, his Masters and PhD degrees in Earth Science from The Ohio State University. Research focuses on reconstructing changes in climatic and geologic processes using geochemical proxies through critical transitions in Earth's history. He is working on wide range of projects involving the marine oxygen's role in the Ordovician Radiation and other redox and weathering related investigations of middle Paleozoic extinction events.

Google Scholar


Graduate Students


Gwen Barnes (PhD candidate)

Gwen received her bachelor’s and master’s degrees in geology from the University of Iowa where she conducted analyses of nitrogen isotopes and trace metal concentrations through the late Cambrian SPICE event. She is interested in using a variety of geochemical proxies to better understand the chemical evolution of our oceans and the evolution of marine life.













Mahdi Maaleki Moghadam (PhD candidate)

Mahdi received his Bachelors degree in Geology from the University of Birjand, Iran in 2010. He received his Master of Science in Sedimentology and Sedimentary Petrology from the Bu-Ali Sina University, Iran in 2013 where he worked on the End-Permian Mass extinction in NW of Iran. Mahdi is working on various marine redox investigations of the middle Silurian extinction event, the Mulde event, from various shale and carbonate successions in North America and Europe.











Nathaniel Evenson (PhD Candidate)

Nathaniel received his BS degree from University of Nebraska-Omaha. He is be working investigating early Silurian global paleoredox dynamics using Thallium isotopes and trace metals from succession from Sweden, Latvia, China, Idaho.








Natalie Hammen (MS student)

Natalie received her Bachelors of Science degree in Geology at University of Iowa in spring 2025. Natalie started the MS program in fall 2025 and is doing deep-time marine biogeochemical investigations of Ordovician shale succession from Idaho.













Jade Greene (MS student)

Jade received his Bachelors of Science degree in Geology at FSU in summer 2021. Jade started the MS program in fall 2021 and is doing geochemical investigations of several sulfur springs in the Woodville Karst Plain region of north Florida. He works full-time at the Florida Geological Survey and is a part-time graduate student.















Merid Schwartz (MS student)

Merid received their Bachelors of Science degree from Evergreen State College in 2020. They worked on Martian analogue sedimentary and geochemical characterization of saline lakes in eastern Washington. Merid is working on various aspects of understanding environmental change in marine environments during the Great Ordovician Biodiversification Event (GOBE). Merid's work utilizes a variety of paleoredox proxies from Ordovician black shale sequences in Sweden (Baltica).


Undergraduate Students


Mackenzie Fravel

Mackenzie has been working with our research group since Fall 2024 assisting in the geochemistry labs with a variety of projects. She is currently a senior geology-major in our department and working on a project investigating deep-time marine biogeochemistry of Ordovician shale succession in Idaho.













Josh Crissey

Josh has been working with our research group since Fall 2024 assisting in the geochemistry labs with a variety of projects. He is currently a senior triple majoring in geology-environmental science-business at FSU and working on a project investigating deep-time marine biogeochemistry of Ordovician shale succession in Idaho.

Research Group Alumni



Chandler Gladwin

Chandler has been working with our research group since Fall 2019 assisting in the geochemistry labs with a variety of projects. He is currently he graduated this summer 2025,and is working as an OPS-employee of the Florida Geological Survey.













Justin Vaughan

Justin has been working with our research group since Fall 2019 assisting in the geochemistry labs with a variety of projects. He finished his bachelors degree in geology in summer 2022. His senior research project is on investigations of marine redox conditions surrounding the Silurian-Devonian boundary at the Klonk, GSSP section in Czech Republic. Justin is now working for a Environmental/Geotechnical Consulting Firm in Nebraska.














Cloe Knutson

Cloe has been working with our research group since Spring/Summer 2021 assisting in the geochemistry labs with a variety of projects. She finished her bachelors in geology and biology in fall 2022. Her research projects have focused on sulfur isotope investigations into Jurrasic-Cretaceaous age marine shales from the north Atlantic Ocean basin. Cloe is currently at University of New Mexico in their PhD program.











Lindsi Allman
Lindsi finished her Masters Thesis in Fall 2021 doing redox proxy investigations of the late Silurian Lau extinction event from the Prauge Basin, Czech Republic. Lindsi is now a PhD student working with Dr. Emily Stewart here at FSU on contact metamorphic rocks associated with CAMP!
















Dr. Nevin Kozik
Nevin finished his PhD dissertation in spring 2022 and his projects centered around unraveling the paleoredox history Ordovician oceans specifically focused on determining the causes of the Ordovician Radiation (GOBE) and Late Ordovician Mass Extinction (LOME). Nevin is now a postdoctoral scholar at University of Oklahoma.












Dr. Anders Lindskog
Anders finished his posdoctoral work in 2021 and is now a Senior Lecture position at Kristianstad University, Sweden. Anders is currently working on unraveling connections between biotic, environmental and geochemical changes during the lower Paleozoic, and refining intra- and intercontinental stratigraphic frameworks for this time interval. Curator of PaleoArchive, an online resource for old geoscience literature.
Anders Lindskog: Google Scholar | ResearchGate










Dr. Chelsie Bowman
Chelsie finished her PhD dissertation in fall of 2020 and her projects centered around investigating paleoredox dynamics throughout the late Silurian Lau/Kozlowskii extinction event. Chelsie finished up her postdoc  at Penn State University in summer 2022 and is now a Research Associate at Texas A&M University in the Oceanography Dept.














Daniel Govert
Dan finished his Masters Thesis in fall of 2020 and his projected involved geochemical investigations of the Ireviken extinction event in deeper marine shale facies. Dan is now working as a Geologist I position at Environmental and Geotechnical Consulting Firm in North Carolina.











Randall Funderburk
Randall finished his Masters Thesis in fall of 2019 and his project involved geochemical investigations (S- & C-isotopes along with I/Ca analyses) of environmental changes associated with the middle Silurian Mulde extinction event in Tennessee and Nevada. Randall is now working for a geotechnical/environmental consulting firm in the Tallahassee area.






Emily Benayoun
Emily finished her Masters Thesis in spring of 2019 on reconstructing carbon, sulfur, and paleoredox dynamics from sedimentary sequences across the Baltic Basin during the interval of biotic recovery and minor extinction events after the Late Ordovician mass extinction event in the earliest Silurian (Llandovery). Emily is currently working for the United States Environmental Protection Agency in Los Angeles, CA.








Andrew Kleinberg
Andrew finished his Masters Thesis in summer 2017-his project involves geochemical investigations (S- & C-isotopes along with I/Ca analyses) of environmental changes associated with the early Silurian Ireviken extinction event in Tennessee and Nevada. Andrew was also awarded the Geological Society of America's Charles and June Ross Graduate Student Research Award fall 2016. Andrew is currently working for the environmental consulting firm Ecology & Environment in the Chicago, IL area.












Westly Owings
Westly has been working with the research group since March 2019 and quickly gotten integrated into doing various sulfur extractions and sediment geochemistry analyses in our lab and at the NHMFL.He is working on an Ordovician project involving C-isotopes and Iodine/Calcium. Westly is currently finishing up his undergraduate degree in geology at FSU. Westly is now graduated with his BS in geology from FS and is in Denver, CO area.









Claudia Richbourg
Claudia has been working with the research group since January 2017 and quickly gotten integrated into doing various sulfur extractions and sediment geochemistry analyses in our lab and at the NHMFL. She has begun an in-depth regional sedimentary geochemical study of the late Silurian Lau event in a deeper water seqence of the Brownsport Formation in western TN. Claudia graduate with her BS–geology  from FSU in spring 2018. Claudia is now working on her PhD at University of Wyoming.








Adolfo Calero
Adolfo has been working with the Young Research Group from 2017-2018 on a variety of projects in the lab, but recently has begun work on sulfur biogechemical analyses of ice and sediment cores from Lake Vida, McMurdo Dry Valleys, Antarctica. Adolfo has finished his MS–degree in geology at The Ohio State University with Dr. Berry Lyons and is back in the Miami, FL area.







Lance Newman and Hilary Davis (left two persons in photo, next to Emily, Nevin, and Chelsie) Both Lance and Hilary completed their Bachelors degree in geology here at FSU summer 2016, congrats to them both! They have been working with us on a variety of projects that include reconstructing sulfur and carbon isotopic records in Paleozoic carbonates and shales. They were also integral parts of field work conducted in the Appalachians by the research group over the last year. Lance is working on a Masters Degree in Computer Science at FSU and Hilary is working for a geotechnical consulting firm in Tallahassee.


Matt McDowell





















Brandon Fish














Meg Wilson

The Young Research Group Photo Gallery