Jenna Shelton is an Associate Program Coordinator with the USGS National Cooperative Geologic Mapping Program in Reston, VA.
Jenna received a B.S. in Environmental Geology from the University of Illinois, Urbana-Champaign in 2011, a M.S. in Hydrology and Water Resources from the University of Arizona in 2013, and a Ph.D. in Environmental Engineering Science from Colorado School of Mines in 2016. She joined the USGS as a student in 2011 and has been in her current position since 2021. Her areas of research and expertise are in subsurface hydrology, aqueous geochemistry, microbial methanogenesis, microbial ecology, bioinformatics, CO2 sequestration and enhanced oil recovery, isotope geochemistry, and compositional data analysis.
Professional Experience
- August 2021 to present: Associate Program Coordinator, U.S. GeoFramework Initiative & STATEMAP, National Cooperative Geologic Mapping Program, Reston, VA
- May 2016 to August 2021: Research Hydrologist, USGS Eastern Energy Resources Science Center, Reston, VA
- May 2013 to May 2016: Physical Scientist Technician, USGS Eastern Energy Resources Science Center, Denver, CO
- May 2011 to May 2013: Student Career Experience Program, USGS Eastern Energy Resources Science Center, Tucson, AZ
Education
- Ph.D. Environmental Engineering Science, Colorado School of Mines, 2016
- M.S. Hydrology and Water Resources, University of Arizona, 2013
- B.S. Environmental Geology, University of Illinois, Urbana-Champaign, 2011
Science and Products
The U.S. GeoFramework Initiative
Great Lakes Geologic Mapping Coalition (GLGMC)
Big Data and Data Visualization
Controls on Unconventional Oil and Gas Production
STATEMAP
Absorbance and Fluorescence Excitation-Emission Matrix Data for Produced Waters from Oil and Gas Producing Basins in the United States
National assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources - data release
Microbiology of the Utica Shale
Injection of Deuterium and Yeast Extract at USGS Birney Field Site, Powder River Basin, Montana, USA, 2016-2020
Input Files and Code for: Machine learning can accurately assign geologic basin to produced water samples using major geochemical parameters
Geochemistry of Utica Shale Play and other Appalachian produced waters
Microbial Communities Associated with Hot Springs and other CO2-rich Waters, Rocky Mountain Plateau
Low biomass microbiology samples collected from a hydraulically fractured well producing from the Niobrara Shale in Colorado
Direct Trace Element Determination in Oil and Gas Produced Waters with Inductively Coupled Plasma - Optical Emission Spectrometry (ICP-OES): Advantages of High Salinity Tolerance (2019)
Microbiology of the greater Bravo Dome region
The EDMAP Program: Training the next generation of geologic mappers
The National Cooperative Geologic Mapping Program’s U.S. GeoFramework Initiative — Delivering a digital database of geologic map information by 2030
Dissolved organic matter within oil and gas associated wastewaters from U.S. unconventional petroleum plays: Comparisons and consequences for disposal and reuse
In situ enhancement and isotopic labeling of biogenic coalbed methane
National assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources — Summary
National assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources — Results
Machine learning can assign geologic basin to produced water samples using major ion geochemistry
The Preventing Harassment in Science workshop: Summary and best practices for planetary science and astrobiology
Utica shale play oil and gas brines: Geochemistry and factors influencing wastewater management
The Utica and Marcellus Shale Plays in the Appalachian Basin are the fourth and first largest natural gas producing plays in the United States, respectively. Hydrocarbon production generates large volumes of brine (“produced water”) that must be disposed of, treated, or reused. Though Marcellus brines have been studied extensively, there are few studies from the Utica Shale Play. This study presen
Repetitive sampling and control threshold improve 16S rRNA results from produced waters associated with hydraulically fractured shales
Compositional analysis of formation water geochemistry and microbiology of commercial and carbon dioxide-rich wells in the southwestern United States
Direct trace element determination in oil and gas produced waters with inductively coupled plasma - Optical emission spectrometry (ICP-OES): Advantages of high salinity tolerance
Science and Products
- Science
The U.S. GeoFramework Initiative
The U.S. GeoFramework Initiative (USGI) is constructing a multi-resolution, seamless national 2D and 3D geologic maps and framework models by leveraging previous and existing geologic mapping efforts by both the USGS and State Geological Surveys to provide new regional- to National-scale geologic syntheses and support digital databases for 21st Century geologic mappers and many end users. By...Great Lakes Geologic Mapping Coalition (GLGMC)
The Great Lakes Geologic Mapping Coalition (GLGMC) advances the understanding of the three-dimensional distribution of the glacial, periglacial, and proglacial deposits that overlie the bedrock of the glaciated Midwest. It recognizes the fact that several continental glaciations of the last million years have profoundly affected the geology and the natural environment of all eight member States...Big Data and Data Visualization
In the “Big Data and Data Visualization” task of the Oil and Gas Waters Project, we compile and update the USGS National Produced Waters Geochemical Database and use big data approaches to provide stakeholders with effortless access and modern tools for easier use and interpretation of our data.Controls on Unconventional Oil and Gas Production
This scoping task incorporates insights from new approaches to production of unconventional resources and currently focuses on conducting a pilot assessment of biogenic natural gas resources in the Permian Basin. For the pilot assessment to occur, we are developing a database that will host geochemical parameters known to be suggestive of microbial methanogenesis mined to the reservoir level for...STATEMAP
The primary objective of the STATEMAP component of the NCGMP is to establish the geologic framework of areas determined to be vital to the economic, social, or scientific welfare of individual States. STATEMAP mapping priorities are established by State Geological Surveys in consultation with a multi-representational State Mapping Advisory Committee. These priorities are based on multiple factors... - Data
Absorbance and Fluorescence Excitation-Emission Matrix Data for Produced Waters from Oil and Gas Producing Basins in the United States
Waters co-produced during petroleum extraction are normally considered wastes but are also possible resources, especially in water-stressed regions. Produced waters can be chemically complex. High salinity, naturally occurring radioactive materials, and organic substances derived from the producing formation can complicate treatment processes. Rapid screening methods to characterize produced waterNational assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources - data release
In 2020, the U.S. Geological Survey (USGS) completed a probabilistic assessment of the volume of technically recoverable oil resources available if current carbon dioxide enhanced oil recovery (CO2-EOR) technologies were applied in amenable oil reservoirs underlying the onshore and State waters area of the conterminous United States. The assessment also includes estimates of the magnitude of CO2 sMicrobiology of the Utica Shale
In order to determine the innate microbial community of shale gas reservoirs and how they are impacted by hydraulic fracturing, this study analyzed biomass collected from produced water and rock from hydraulically fractured wells in the Utica Shale. The samples include rock chips from a drill core from one Utica well, produced water from that same Utica well, and produced water from 12 different UInjection of Deuterium and Yeast Extract at USGS Birney Field Site, Powder River Basin, Montana, USA, 2016-2020
Subsurface microbial (biogenic) methane production is an important part of the global carbon cycle and has resulted in natural gas accumulations in many coal beds worldwide. Laboratory experiments indicate coal beds can act as natural geobioreactors and produce additional low carbon renewable natural gas with algal or yeast compounds, yet the effectiveness of these nutrients in situ are unknown. TInput Files and Code for: Machine learning can accurately assign geologic basin to produced water samples using major geochemical parameters
As more hydrocarbon production from hydraulic fracturing and other methods produce large volumes of water, innovative methods must be explored for treatment and reuse of these waters. However, understanding the general water chemistry of these fluids is essential to providing the best treatment options optimized for each producing area. Machine learning algorithms can often be applied to datasetsGeochemistry of Utica Shale Play and other Appalachian produced waters
Citation Note: These data were collected as part of a research study published in Environmental Science and Technology. Please reference the following paper when citing these data. Blondes, M.S., Shelton, J.L., Engle, M.A., Trembly, J.P., Doolan, C.A., Jubb, A.M., Chenault, J.M., Rowan, E.L., Haefner, R.J., and Mailot, B.E., 2020, Utica Shale Play Oil and Gas Brines: Geochemistry and Factors InflMicrobial Communities Associated with Hot Springs and other CO2-rich Waters, Rocky Mountain Plateau
The Colorado Plateau is associated with several different commercial sources of natural CO2 and other non-hydrocarbon gases, such as noble gases. Twenty-five different hot springs, warm springs, cold springs, and/or rivers across the Utah region of the Colorado Plateau were sampled for microbial biomass. These different locations were associated with some concentration of dissolved or effervesciLow biomass microbiology samples collected from a hydraulically fractured well producing from the Niobrara Shale in Colorado
Low biomass waters provide a unique challenge in the field of microbial ecology. It is difficult to determine, when biomass concentrations are extremely low, whether or not the sequencing data received are of good quality and representative of the waters sampled. Fifty-nine samples including 8 blanks were collected from a low biomass hydraulically fractured well producing from the Niobrara Shale iDirect Trace Element Determination in Oil and Gas Produced Waters with Inductively Coupled Plasma - Optical Emission Spectrometry (ICP-OES): Advantages of High Salinity Tolerance (2019)
Waters co-produced during petroleum extraction are the largest waste stream from oil and gas development. Reuse or disposal of these waters is difficult due both to their high salinities, which can greatly exceed 35 g/L (seawater equivalent), and also the sheer volume of wastewater generated, which is estimated at nearly 900 billion gallons per year across the United States. Beyond disposal concerMicrobiology of the greater Bravo Dome region
Bravo Dome is a commercial natural CO2 field that supplies the gas to depleted oil fields for enhanced oil recovery. In order to understand the distribution of CO2 across the greater Bravo Dome region, including southeastern Colorado and northwestern New Mexico, and to assess the impacts of high CO2 concentrations on microbes in the subsurface, 7 samples were collected from sites associated with h - Publications
Filter Total Items: 21
The EDMAP Program: Training the next generation of geologic mappers
Introduction Detailed geologic maps are the basis of most earth science investigations and can be used for natural hazard mitigation, resource identification and exploration, infrastructure planning, and more. As a part of the U.S. Geological Survey (USGS) congressionally mandated National Cooperative Geologic Mapping Program (NCGMP), the EDMAP program (referred to as EDMAP) is a partnership betweAuthorsJenna L. Shelton, Christopher S. Swezey, Michael MarkettiThe National Cooperative Geologic Mapping Program’s U.S. GeoFramework Initiative — Delivering a digital database of geologic map information by 2030
The U.S. Geological Survey's National Cooperative Geologic Mapping Program's U.S. GeoFramework Initiative responds to Congressional direction to implement the National Geologic Map Database Phase Three. The U.S. GeoFramework Initiative aims to create and deliver a new digital geologic framework of the United States by 2030. This Fact Sheet outlines the collaborations needed and plans taken to achiAuthorsJenna L. Shelton, William Andrews, Joseph Colgan, Samuel Johnstone, David Soller, Richard Berg, Donald Sweetkind, Kristine Zellman, John Brock, Kate RitzelDissolved organic matter within oil and gas associated wastewaters from U.S. unconventional petroleum plays: Comparisons and consequences for disposal and reuse
Wastewater generated during petroleum extraction (produced water) may contain high concentrations of dissolved organics due to their intimate association with organic-rich source rocks, expelled petroleum, and organic additives to fluids used for hydraulic fracturing of unconventional (e.g., shale) reservoirs. Dissolved organic matter (DOM) within produced water represents a challenge for treatmenAuthorsBonnie McDevitt, Aaron M. Jubb, Matthew S. Varonka, Madalyn S. Blondes, Mark A Engle, Tanya J. Gallegos, Jenna L. SheltonIn situ enhancement and isotopic labeling of biogenic coalbed methane
Subsurface microbial (biogenic) methane production is an important part of the global carbon cycle that has resulted in natural gas accumulations in many coal beds worldwide. Laboratory studies suggest that complex carbon-containing nutrients (e.g., yeast or algae extract) can stimulate methane production, yet the effectiveness of these nutrients within coal beds is unknown. Here, we use downholeAuthorsElliott Barnhart, Leslie F. Ruppert, Randy Heibert, Heidi J. Smith, Hannah Schweitzer, Arthur Clark, Edwin Weeks, William H. Orem, Matthew S. Varonka, George A. Platt, Jenna L. Shelton, Katherine J Davis, Robert Hyatt, Jennifer C. McIntosh, Kilian Ashley, Shuhei Ono, Anna M. Martini, Keith Hackley, Robin Gerlach, Lee Spangler, Adrienne Phillips, Mark Barry, Alfred B. Cunningham, Matthew W. FieldsNational assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources — Summary
IntroductionIn 2020, the U.S. Geological Survey (USGS) completed a probabilistic assessment of the volume of technically recoverable oil resources that might be produced by using current carbon dioxide enhanced oil recovery (CO2-EOR) technologies in amenable conventional oil reservoirs underlying the onshore and State waters areas of the conterminous United States. The assessment also includes estAuthorsPeter D. Warwick, Emil D. Attanasi, Madalyn S. Blondes, Sean T. Brennan, Marc L. Buursink, Steven M. Cahan, Colin A. Doolan, Philip A. Freeman, C. Özgen Karacan, Celeste D. Lohr, Matthew D. Merrill, Ricardo A. Olea, Jenna L. Shelton, Ernie R. Slucher, Brian A. VarelaNational assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources — Results
In 2020, the U.S. Geological Survey (USGS) completed a probabilistic assessment of the volume of technically recoverable oil resources available if current carbon dioxide enhanced oil recovery (CO2-EOR) technologies were applied to amenable oil reservoirs underlying the onshore and State waters areas of the conterminous United States. The assessment also includes estimates of the mass of CO2 thatAuthorsPeter D. Warwick, Emil D. Attanasi, Madalyn S. Blondes, Sean T. Brennan, Marc L. Buursink, Steven M. Cahan, Colin A. Doolan, Philip A. Freeman, C. Özgen Karacan, Celeste D. Lohr, Matthew D. Merrill, Ricardo A. Olea, Jenna L. Shelton, Ernie R. Slucher, Brian A. VarelaMachine learning can assign geologic basin to produced water samples using major ion geochemistry
Understanding the geochemistry of waters produced during petroleum extraction is essential to informing the best treatment and reuse options, which can potentially be optimized for a given geologic basin. Here, we used the US Geological Survey’s National Produced Waters Geochemical Database (PWGD) to determine if major ion chemistry could be used to classify accurately a produced water sample to aAuthorsJenna L. Shelton, Aaron M. Jubb, Samuel Saxe, Emil D. Attanasi, Alexei Milkov, Mark A Engle, Philip A. Freeman, Christopher Shaffer, Madalyn S. BlondesThe Preventing Harassment in Science workshop: Summary and best practices for planetary science and astrobiology
The NASA-funded Preventing Harassment in Science workshop took place in June of 2020. Here we describe the workshop and summarize the best practices for reducing harassment that were discussed. We include a list of recommendations that can be used to take steps towards reducing harassment in the planetary science and astrobiology community.AuthorsKristen A. Bennett, Maggie McAdam, Moses Milazzo, Patricia A. Garcia, Jenna L. Shelton, Peggy J. Gardiner, Serina Diniega, Catalina Martinez, Alexandra B. Etheridge, Alicia Rutledge, C. RicheyUtica shale play oil and gas brines: Geochemistry and factors influencing wastewater management
The Utica and Marcellus Shale Plays in the Appalachian Basin are the fourth and first largest natural gas producing plays in the United States, respectively. Hydrocarbon production generates large volumes of brine (“produced water”) that must be disposed of, treated, or reused. Though Marcellus brines have been studied extensively, there are few studies from the Utica Shale Play. This study presen
AuthorsMadalyn S. Blondes, Jenna L. Shelton, Mark A Engle, Jason Trembly, Colin A. Doolan, Aaron M. Jubb, Jessica Chenault, Elisabeth L. Rowan, Ralph Haefner, Brian E. MailotRepetitive sampling and control threshold improve 16S rRNA results from produced waters associated with hydraulically fractured shales
Sequencing microbial DNA from deep subsurface environments is complicated by a number of issues ranging from contamination to non-reproducible results. Many samples obtained from these environments - which are of great interest due to the potential to stimulate microbial methane generation - contain low biomass. Therefore, samples from these environments are difficult to study as sequencing resultAuthorsJenna L. Shelton, Elliott Barnhart, Leslie F. Ruppert, Aaron M. Jubb, Madalyn S. Blondes, Christina A. DeVeraCompositional analysis of formation water geochemistry and microbiology of commercial and carbon dioxide-rich wells in the southwestern United States
Studies of naturally occurring subsurface carbon dioxide (CO2) accumulations can provide useful information for potential CO2 injection projects; however, the microbial communities and formation water geochemistry of most reservoirs are understudied. Formation water and microbial biomass were sampled at four CO2-rich reservoir sites: two within Bravo Dome, a commercial CO2 field in New Mexico; oneAuthorsJenna L. Shelton, Robert S. Andrews, Denise M. Akob, Christina A. DeVera, Adam C. Mumford, Mark Engle, Michelle R. Plampin, Sean T. BrennanDirect trace element determination in oil and gas produced waters with inductively coupled plasma - Optical emission spectrometry (ICP-OES): Advantages of high salinity tolerance
Waters co-produced during petroleum extraction are the largest waste stream from oil and gas development. Reuse or disposal of these waters is difficult due to their high salinities and the sheer volumes generated. Produced waters may also contain valuable mineral commodities. While an understanding of produced water trace element composition is required for evaluating the associated resource andAuthorsAaron M. Jubb, Mark Engle, Jessica Chenault, Madalyn Blondes, Cloelle G. Danforth, Colin Doolan, Tanya Gallegos, Dan Mueller, Jenna Shelton