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Principal Investigator

Dr. Jeremy D. Owens

My research revolves around understanding biogeochemical evolution during major climatic events. I am working on developing new geochemical tools to better fingerprint the timing and evolution during these events. Much of this work revolves around better discern natural variability and mechanisms to understand future climate change.

Curriculum Vitae | Google Scholar
Email: jdowens@fsu.edu | Office: EOAS M5004 and NHMFL B236
Phone: EOAS (850) 644-5018 (850) | NHMFL (850) 645-2486

Graduate Students

	Christian Gfatter Christian worked on automating identification of foramifera at Univeristy of South Florida. He is interested in analyzing trace metal concentration in foraminiferal calcite to better constrain paleo-ocean chemistry. Email: chg17c@my.fsu.edu
	John (Jay) Goodin Jay received their BS from Central Michigan University and MS from the University of Louisiana at Lafayette where they analyzed traced metal concentrations within lake sediments from the Peruvian Andes. As a PhD student, Jay will make use of novel trace metal proxies and systematics to reconstruct the oxygenation state of oceans and the atmosphere of the deep past to better understand how this affected impacted life and evolution. Jay is interested in the geochemistry of both ancient and modern systems. Email: jg21a@my.fsu.edu
	Siqi Li Siqi received her bachelor's degree from University of Science and Technology of China in Earth Science. She is interested in vanadium isotopes to study Earth's surface processes such as variations in redox conditions of ancient oceans. It is especially important to refine our knowledge of low but non-zero oxygen contents of our oceans. Email: sl17f@my.fsu.edu
	Sean Newby Sean received his bachelors degree in Earth Sciences at the Ohio State University. There, he worked on strontium isotope stratigraphy and conodont biostratigraphy. He is interested in continuing work on isotopic systematics to better discern important climatic events linked to biological evolution throughout Earth history. Email: smn17b@my.fsu.edu
	Anwen Zhou Anwen will start Fall 2023. Email:

Undergraduate Students

Maya Roselli

Maya is an Environmental Science major and will be working on the Triassic-Jurassic trace metal concentrations and Tl isotope analysis in conjunction with our involvement in Alaska research.

Mentoring of non-FSU Graduate Students

Bridget Lee – University California, Riverside

Bridget studied changes in Fe cycling and speciation deposition in several marine transects across the Atlantic and Pacific during glacial-interglacial cycles. She is now working on understanding the geochemical signatures during the pre-Cambrian using metal concentrations and isotopes to better constrain early evolution of life and the rise of oxygen.

Lab Alumni

	Terryl Bandy - Masters Degree Terryl completed her master's degree in May 2019 with a research on a geochemistry of sediments from the Permian Basin to constrain the local, basinal, and global redox conditions using Fe speciation, trace metals, and thallium isotopes.
	Allison Brown Allison is a Geology major working on Triassic-Jurassic trace metal concentrations in conjunction with our involvement in Alaska research. Our goal is to better constrain local to global redox conditions during this mass extinction event. Now a PhD student at the University of South Carolina.
	Brett Farrran Brett graduated with an environmental science degree. He helped analyze using thallium isotopes to better constrain long-term changes in marine oxygen conditions prior to- and after OAE-2. This research began during the summer as an MagLab REU student, and continued for several semesters.
	Brett Holdaway - Masters Degree He completed his master's degree in September 2018 with a research project that involved the initial rise in oxygen at or before the GOE and it's associated consequences. With this he hopes to luminate a more precise and accurate time frame for when ocean oxygenation changed.
	Tianyi Huang – MIT/WHOI Joint Program Student Tianyi helped in developing and analyzing V isotopes in modern seawater.
	Adam Karl Adam is master's student (former environmental science undergraduate in the lab) that is now working on trace metal accumulation in local karsting features. Adam has previously worked on heavy metal transport modelling using the PHREEQC software.
	Allison Keller - Masters Degree Allison's masters research focused on constraining the extinction record during OAE2 (~91 million years ago) to better understand if the record is truly a global and simultaneous event.
	Dalton Langford - Undergraduate Degree Dalton finished his undergraduate degree in May 2018. His interest were to better understand the paleoclimate before, during and after major warming periods in Earth's history, as well as carbon sequestrations, alternative energy sources, and water shortage issues.
	Matt Leroy At FSU \| NHMFL Matt measured Tl isoptopes on black shales from the SPICE and F/F boundary event to constrain the timing and variability of deoxygenation as related to carbon istoope stratigraphy and biological extiniction. Ph.D. Candidate at Virginia Polytechnic Insitute and State University
	Chadlin Ostrander – Arizona State University – Ph.D. Completed Chad has finished his Ph.D. at ASU on Mo and Tl isotopes. He recently started a WHOI Fellowship. At FSU and collobrations with the group have focused on utilizing Tl isotopes from a wide range of samples to better understand the evolution of oceanic (de)oxygenation events. It is especially important to understand ocean oxygen contents that encompass the rise of animals and atmospheric oxygen to better constrain the envirnomental changes during this time.
	Mary Powell - Undergraduate Degree Mary graduated with her undergraduate degree in May 2016. She was working on thallium isotopes in sediment cores from the Santa Barbaa Basin to test changes in Mn-oxide burial variations during glacial-interglacial timescales as part of the FSU-MagLab REU program.
	Ashley Prow - Undergraduate Degree Ashley graduated in May 2017 with an undergraduate degree in Chemistry. She was working on trace metal chemistry of organic-rich shales from several Mesozoic OAEs including OAE 2 samples from Pakistan.
	Kyle Rybacki - Visting Postdoctoral Fellow As a visiting postdoc in the THOR lab he was working on Tl isotopes in Archean samples to better constrain the initiation and rise of oxygen in the early oceans.
	Travis Spake - Undergraduate Degree Travis graduated with an undergraduate degree in Geology in 2018. He was helping on various projects dissolving sediments for trace metal analysis and thallium isotopes.
	John Sutton - Undergraduate Degree John graduated with degrees in Envionrmental Science and Chemistry. He helped setup lab procedures and begin several new projects using thallium isotpes.. His primary work has been on analyzing thallium isotopes in two Cretaceous OAE2 section for comparison.
	Dr. Theodore Them - Postdoctoral Researcher Teddy is a professor at the College of Charleston. His main research interest revolved around understanding the causes and consequences of global environmental perturbations during the Early Jurassic Toarcian OAE. At FSU Teddy investigate thallium isotopes during the T-OAE (PNAS paper), mercury enrichments, trace metal systematics and other Earth System Sciences. His work lead to several grant submissions while at FSU-MagLab.
	Kyle Turner - Masters Degree He completed his master's in May 2018 with a research project that involved REE concentrations and thallium isotopes in phosphorite deposits. Specifially, the depositional and/or diagenetic conditions that enrich these elements is important to constrain and may lead to an understanding of ocean chemistry.
	Jane Wadhams Jane was a UROP, MagLab REU, and honors in the major Geology student. She used Tl isotopes to investigate marine deoxygenation during the Paleocene-Eocene Thermal Maximum.
	Dr. Fei Wu - Postdoctoral Researcher Fei is research scientist at Macquarie University in Australia. He had a very productive two years at FSU - MagLab that will lead to 3 to 4 manuscripts. His research at FSU investigated the vanadium isotope signature of modern sediments to fingerprint low oxygen environments with potential application to the ancient record. His work helped to land a highly competetive NASA Exobiology grant.