Professor Jay Banner ( – Fred M. Bullard Professorship in Geological Sciences; Distinguished Teaching Professor; Clean Lab PI and MC-ICP-MS Lab Co-PI

Banner’s research and teaching interests center on Earth surface processes with the goal of understanding the interactions that occur between the atmosphere-land-ocean systems, and how these interactions are preserved in the geologic record. Avenues of investigation include the origin and evolution of carbonate rocks, groundwater, surface water, and the oceans. These subjects are explored using a range of approaches that include field studies, petrography, isotope and trace element geochemistry, geochronology, and modeling. Examples of research projects using these approaches are studies of cave deposits as records of the links between climate change and hydrology, studies of carbonate rocks as records of the chemistry of ancient oceans, and studies of modern aquifers in urbanizing environments.



Professor John Lassiter ( – Leonidas T. Barrow Centennial Chair in Mineral Resources; Peter T. Flawn Centennial Chair in Geology; Clean Lab PI and MC-ICP-MS Lab Co-PI

Dr. Lassiter’s research focus is on the application of isotope and trace element geochemistry to fundamental problems of the Earth’s origin and evolution, including but not limited to: Structure and chemical evolution of the mantle and crust; Origin of mantle plumes and nature of plume/lithosphere interaction; Generation and segregation of magma; Origin and chemical evolution of continental lithosphere; Chemical fluxes in constructive and destructive tectonic environments. Current areas of interest include the role of crust and lithospheric mantle recycling in the generation of mantle chemical heterogeneity, the origin and distribution of water and other volatile elements in the Earth’s interior, and the thermal and chemical evolution of the Earth’s core and core/mantle boundary.



Dr. Daniel Stockli

Professor Daniel Stockli ( – Chevron Centennial Professorship in Geology; MC-ICP-MS Lab Co-PI

My research focuses on (1) the integrated application of thermochronology and geochronology to tectonic and geological problems to better understand the temporal and thermal aspects of tectonic, petrologic, stratigraphic, and geomorphologic processes. In particular, I am interested in combining structural geology with low-temperature thermochronology to elucidate the spatial and temporal distribution of deformation in intra-continental rifting, orogen-parallel extension, and continental rupture leading to seafloor spreading as well as collisional tectonics (e.g., coupling of fold-and-thrust sheet and foreland basin dynamics). (2) Geo- and Thermochronometry technique development, calibration, and bench marking, with special emphasis on development of new thermochronmeters (e.g., monazite, rutile, and magnetite) and novel applications (e.g., geoarcheology, isotopic provenance, etc.)


Laboratory Managers


Dr. Staci Loewy ( – MC-ICP-MS Lab Manager

As laboratory manager, Staci maintains the MC-ICP-MS lab and clean labs. Aaron and Staci work with UT faculty, students, and visitors to acquire publishable data to achieve their research needs. We develop new analytical techniques as needed, train users to conduct their own research, and complete analyses for contract work.

Staci’s new research focuses on developing analytical methods using multiple high sensitivity Daly detectors in the Nu Plasma 3D MC-ICP-MS and on adapting U-Th dating techniques, commonly used in carbonate rocks, to date ostrich egg shells found in archeological sites. Her on-going research focuses on crustal evolution and supercontinent reconstruction. Staci’s interests are not linked to a particular isotope system or period of geologic time. She seeks collaborations where she may contribute isotope expertise to address an interesting problem and employ whichever methods are necessary to answer the questions.



Dr. Aaron Satkoski ( – TIMS Lab Manager

As lab manager Aaron maintains a functioning clean lab and thermal ionization mass spectrometer.  He works with faculty, researchers and students to help them process samples through the lab and obtain publishable data.

His research focuses on the developing new analytical techniques using the TIMS and MC-ICP-MS.  As well, he also works to unravel the history of the early Earth by examining the initiation of plate tectonics; crust formation and evolution; isotopic evolution of seawater as it relates to redox and crustal weathering through time.