Tina Roberts-Ashby, Ph.D. (Former Employee)
Science and Products
Carbon Dioxide Storage Resources - California Basins: Chapter Q, Spatial Data Carbon Dioxide Storage Resources - California Basins: Chapter Q, Spatial Data
This data release provides shapefiles that represent storage assessment units (SAUs) and drilling-density cells in the Central California Coast, Los Angeles, Sacramento, San Joaquin, and Ventura Basins of California in the United States. The SAU is the fundamental unit used in the National Assessment of Geologic Carbon Dioxide Storage Resources project for the assessment of geologic CO2...
Carbon Dioxide Storage Resources-Anadarko and Southern Oklahoma Basins: Chapter R. Spatial Data Carbon Dioxide Storage Resources-Anadarko and Southern Oklahoma Basins: Chapter R. Spatial Data
This data release provides shapefiles that represent storage assessment units (SAUs) and drilling-density cells in the Anadarko and Southern Oklahoma Basins of Colorado, Kansas, Oklahoma, and Texas in the United States. The SAU is the fundamental unit used in the National Assessment of Geologic Carbon Dioxide Storage Resources project for the assessment of geologic CO2 storage resources...
Carbon Dioxide Storage Resources - Appalachian Basin, Black Warrior Basin, Illinois Basin, and Michigan Basin: Chapter P, Spatial Data Carbon Dioxide Storage Resources - Appalachian Basin, Black Warrior Basin, Illinois Basin, and Michigan Basin: Chapter P, Spatial Data
The storage assessment unit (SAU) is the fundamental unit used in the National Assessment of Geologic Carbon Dioxide Storage Resources project for the assessment of geologic CO2 storage resources. The SAU is shown here as a geographic boundary interpreted, defined, and mapped by the geologist responsible for the assessment interval. Individual SAUs are defined on the basis of common...
USGS Gulf Coast Petroleum Systems, and National and Global Oil and Gas Assessment Projects - USGS Province 50 Assessment Unit Boundaries and Assessment Input Forms USGS Gulf Coast Petroleum Systems, and National and Global Oil and Gas Assessment Projects - USGS Province 50 Assessment Unit Boundaries and Assessment Input Forms
The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum System. The Assessment Unit is shown herein as a geographic boundary interpreted, defined, and mapped by the geologist responsible for the province and...
Filter Total Items: 13
Modeling geologic sequestration of carbon dioxide in a deep saline carbonate reservoir with TOUGH2–ChemPlugin, a new tool for reactive transport modeling Modeling geologic sequestration of carbon dioxide in a deep saline carbonate reservoir with TOUGH2–ChemPlugin, a new tool for reactive transport modeling
This paper outlines the development and demonstration of a new tool, TOUGH2–ChemPlugin (T2CPI) for predicting rock–water–CO2 interaction following injection of supercritical CO2 into a heterogeneous carbonate system. Specifically, modeling capabilities of TOUGH2, which examines multiphase flow and supercritical CO2 behavior, were combined with the geochemical modeling capabilities of The
Authors
Tina L. Roberts-Ashby, Peter M. Berger, Jeffrey A. Cunningham, Ram Kumar, Madalyn S. Blondes
Assessment of undiscovered oil and gas resources in the South Florida basin, 2016 Assessment of undiscovered oil and gas resources in the South Florida basin, 2016
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean undiscovered, technically recoverable resources of 49 million barrels of oil and 18 billion cubic feet of gas in the onshore and State waters part of the South Florida basin.
Authors
Tina L. Roberts-Ashby, Paul C. Hackley, Celeste D. Lohr, Christopher J. Schenk, Tracey J. Mercier, Katherine J. Whidden, Phuong A. Le, Marilyn E. Tennyson, Stephanie B. Gaswirth, Cheryl A. Woodall, Michael E. Brownfield, Heidi M. Leathers-Miller, Kristen R. Marra, Thomas M. Finn
Geologic framework for the national assessment of carbon dioxide storage resources—Atlantic Coastal Plain and Eastern Mesozoic Rift Basins Geologic framework for the national assessment of carbon dioxide storage resources—Atlantic Coastal Plain and Eastern Mesozoic Rift Basins
This chapter presents information pertinent to the geologic carbon dioxide (CO2) sequestration potential within saline aquifers located in the Atlantic Coastal Plain and Eastern Mesozoic Rift Basins of the Eastern United States. The Atlantic Coastal Plain is underlain by a Jurassic to Quaternary succession of sedimentary strata that onlap westward onto strata of the Appalachian Piedmont
Authors
William H. Craddock, Matthew D. Merrill, Tina L. Roberts-Ashby, Sean T. Brennan, Marc L. Buursink, Ronald M. Drake, Peter D. Warwick, Steven M. Cahan, Christina A. DeVera, Philip A. Freeman, Mayur A. Gosai, Celeste D. Lohr
A method for examining the geospatial distribution of CO2 storage resources applied to the Pre-Punta Gorda Composite and Dollar Bay reservoirs of the South Florida Basin, U.S.A A method for examining the geospatial distribution of CO2 storage resources applied to the Pre-Punta Gorda Composite and Dollar Bay reservoirs of the South Florida Basin, U.S.A
This paper demonstrates geospatial modification of the USGS methodology for assessing geologic CO2 storage resources, and was applied to the Pre-Punta Gorda Composite and Dollar Bay reservoirs of the South Florida Basin. The study provides detailed evaluation of porous intervals within these reservoirs and utilizes GIS to evaluate the potential spatial distribution of reservoir...
Authors
Tina Roberts-Ashby, Brandon N. Ashby
Geologic framework for the national assessment of carbon dioxide storage resources─South Florida Basin: Chapter L in Geologic framework for the national assessment of carbon dioxide storage resources Geologic framework for the national assessment of carbon dioxide storage resources─South Florida Basin: Chapter L in Geologic framework for the national assessment of carbon dioxide storage resources
This report presents five storage assessment units (SAUs) that have been identified as potentially suitable for geologic carbon dioxide sequestration within a 35,075-square-mile area that includes the entire onshore and State-water portions of the South Florida Basin. Platform-wide, thick successions of laterally extensive carbonates and evaporites deposited in highly cyclic depositional
Authors
Tina L. Roberts-Ashby, Sean T. Brennan, Matthew D. Merrill, Madalyn S. Blondes, P.A. Freeman, Steven M. Cahan, Christina A. DeVera, Celeste D. Lohr
Geologic framework for the national assessment of carbon dioxide storage resources: Permian and Palo Duro Basins and Bend Arch-Fort Worth Basin: Chapter K in Geologic framework for the national assessment of carbon dioxide storage resources Geologic framework for the national assessment of carbon dioxide storage resources: Permian and Palo Duro Basins and Bend Arch-Fort Worth Basin: Chapter K in Geologic framework for the national assessment of carbon dioxide storage resources
The U.S. Geological Survey has completed an assessment of the potential geologic carbon dioxide storage resource in the onshore areas of the United States. To provide geological context and input data sources for the resources numbers, framework documents are being prepared for all areas that were investigated as part of the national assessment. This report is the geologic framework...
Authors
Matthew D. Merrill, Ernie R. Slucher, Tina L. Roberts-Ashby, Peter D. Warwick, Madalyn S. Blondes, P.A. Freeman, Steven M. Cahan, Christina A. DeVera, Celeste D. Lohr
Geologic framework for the national assessment of carbon dioxide storage resources: Williston Basin, Central Montana Basins, and Montana Thrust Belt study areas Geologic framework for the national assessment of carbon dioxide storage resources: Williston Basin, Central Montana Basins, and Montana Thrust Belt study areas
The 2007 Energy Independence and Security Act directs the U.S. Geological Survey (USGS) to conduct a national assessment of potential geologic storage resources for carbon dioxide (CO2). The methodology used by the USGS for the national CO2 assessment follows that of previous USGS work. This methodology is non-economic and is intended to be used at regional to sub-basinal scales. The...
Authors
Marc L. Buursink, Matthew D. Merrill, William H. Craddock, Tina L. Roberts-Ashby, Sean T. Brennan, Madalyn S. Blondes, P.A. Freeman, Steven M. Cahan, Christina A. DeVera, Celeste D. Lohr
Geologic framework for the national assessment of carbon dioxide storage resources: Alaska North Slope and Kandik Basin, Alaska Geologic framework for the national assessment of carbon dioxide storage resources: Alaska North Slope and Kandik Basin, Alaska
This report presents fourteen storage assessment units (SAUs) from the Alaska North Slope and two SAUs from the Kandik Basin of Alaska. The Alaska North Slope is a broad, north-dipping coastal plain that is underlain by a thick succession of sedimentary rocks that accumulated steadily throughout much of the Phanerozoic during three major tectonic sequences: the Mississippian through...
Authors
William H. Craddock, Marc L. Buursink, Jacob A. Covault, Sean T. Brennan, Colin A. Doolan, Ronald M. Drake, Matthew D. Merrill, Tina L. Roberts-Ashby, Ernie R. Slucher, Peter D. Warwick, Madalyn S. Blondes, P.A. Freeman, Steven M. Cahan, Christina A. DeVera, Celeste D. Lohr
Geologic framework for the national assessment of carbon dioxide storage resources: U.S. Gulf Coast Geologic framework for the national assessment of carbon dioxide storage resources: U.S. Gulf Coast
This report presents 27 storage assessment units (SAUs) within the United States (U.S.) Gulf Coast. The U.S. Gulf Coast contains a regionally extensive, thick succession of clastics, carbonates, salts, and other evaporites that were deposited in a highly cyclic depositional environment that was subjected to a fluctuating siliciclastic sediment supply and transgressive and regressive sea...
Authors
Tina L. Roberts-Ashby, Sean T. Brennan, Marc L. Buursink, Jacob A. Covault, William H. Craddock, Ronald M. Drake, Matthew D. Merrill, Ernie R. Slucher, Peter D. Warwick, Madalyn S. Blondes, Mayur A. Gosai, P.A. Freeman, Steven M. Cahan, Christina A. DeVera, Celeste D. Lohr
National assessment of geologic carbon dioxide storage resources: Results National assessment of geologic carbon dioxide storage resources: Results
In 2012, the U.S. Geological Survey (USGS) completed an assessment of the technically accessible storage resources (TASR) for carbon dioxide (CO2) in geologic formations underlying the onshore and State waters area of the United States. The formations assessed are at least 3,000 feet (914 meters) below the ground surface. The TASR is an estimate of the CO2 storage resource that may be...
Authors
National assessment of geologic carbon dioxide storage resources: Data National assessment of geologic carbon dioxide storage resources: Data
In 2012, the U.S. Geological Survey (USGS) completed the national assessment of geologic carbon dioxide storage resources. Its data and results are reported in three publications: the assessment data publication (this report), the assessment results publication (U.S. Geological Survey Geologic Carbon Dioxide Storage Resources Assessment Team, 2013a, USGS Circular 1386), and the...
Authors
National assessment of geologic carbon dioxide storage resources: Summary National assessment of geologic carbon dioxide storage resources: Summary
The U.S. Geological Survey (USGS) recently completed an evaluation of the technically accessible storage resource (TASR) for carbon dioxide (CO2) for 36 sedimentary basins in the onshore areas and State waters of the United States. The TASR is an estimate of the geologic storage resource that may be available for CO2 injection and storage and is based on current geologic and hydrologic...
Authors
Non-USGS Publications**
Post, P.J., Coleman, Jr., J.L., Rosen, N.C., Brown, D.E., Roberts-Ashby, T.L., Kahn, P., Rowan, M., eds. (2015). Petroleum Systems in “Rift” Basins. 34th Annual GCSSEPM Foundation Perkins-Rosen Research Conference, Program and Abstracts, 68 p.
Roberts-Ashby, T.L., Stewart, M.T., and Ashby, B.N., 2013, An evaluation of porosity and potential use for carbon dioxide storage in the Upper Cretaceous Lawson Formation and Paleocene Cedar Keys Formation of south-central and southern Florida: Environmental Geosciences, v. 20, no. 3, p. 109-135.
Roberts-Ashby, T.L. and Stewart, M.T., 2012, Potential for carbon dioxide sequestration in the Lower Cretaceous Sunniland Formation within the Sunniland Trend of the South Florida Basin, U.S.: International Journal of Greenhouse Gas Control, v. 6, p. 113-125.
Roberts, T. and Harris, W. (2004). Characterization of nutrients and trace metals in the Peedee Sand and Castle Hayne Limestone Aquifers: New Hanover County, southeastern North Carolina. Southeastern Geology, v. 43, no. 2.
Scott, T., Means, G., Means, R., Meegan, R., Upchurch, S., Copeland, R., Jones, J., Roberts, T., and Willet, W.A. (2004). Springs of Florida. Florida Geological Survey Bulletin 66.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Carbon Dioxide Storage Resources - California Basins: Chapter Q, Spatial Data Carbon Dioxide Storage Resources - California Basins: Chapter Q, Spatial Data
This data release provides shapefiles that represent storage assessment units (SAUs) and drilling-density cells in the Central California Coast, Los Angeles, Sacramento, San Joaquin, and Ventura Basins of California in the United States. The SAU is the fundamental unit used in the National Assessment of Geologic Carbon Dioxide Storage Resources project for the assessment of geologic CO2...
Carbon Dioxide Storage Resources-Anadarko and Southern Oklahoma Basins: Chapter R. Spatial Data Carbon Dioxide Storage Resources-Anadarko and Southern Oklahoma Basins: Chapter R. Spatial Data
This data release provides shapefiles that represent storage assessment units (SAUs) and drilling-density cells in the Anadarko and Southern Oklahoma Basins of Colorado, Kansas, Oklahoma, and Texas in the United States. The SAU is the fundamental unit used in the National Assessment of Geologic Carbon Dioxide Storage Resources project for the assessment of geologic CO2 storage resources...
Carbon Dioxide Storage Resources - Appalachian Basin, Black Warrior Basin, Illinois Basin, and Michigan Basin: Chapter P, Spatial Data Carbon Dioxide Storage Resources - Appalachian Basin, Black Warrior Basin, Illinois Basin, and Michigan Basin: Chapter P, Spatial Data
The storage assessment unit (SAU) is the fundamental unit used in the National Assessment of Geologic Carbon Dioxide Storage Resources project for the assessment of geologic CO2 storage resources. The SAU is shown here as a geographic boundary interpreted, defined, and mapped by the geologist responsible for the assessment interval. Individual SAUs are defined on the basis of common...
USGS Gulf Coast Petroleum Systems, and National and Global Oil and Gas Assessment Projects - USGS Province 50 Assessment Unit Boundaries and Assessment Input Forms USGS Gulf Coast Petroleum Systems, and National and Global Oil and Gas Assessment Projects - USGS Province 50 Assessment Unit Boundaries and Assessment Input Forms
The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum System. The Assessment Unit is shown herein as a geographic boundary interpreted, defined, and mapped by the geologist responsible for the province and...
Filter Total Items: 13
Modeling geologic sequestration of carbon dioxide in a deep saline carbonate reservoir with TOUGH2–ChemPlugin, a new tool for reactive transport modeling Modeling geologic sequestration of carbon dioxide in a deep saline carbonate reservoir with TOUGH2–ChemPlugin, a new tool for reactive transport modeling
This paper outlines the development and demonstration of a new tool, TOUGH2–ChemPlugin (T2CPI) for predicting rock–water–CO2 interaction following injection of supercritical CO2 into a heterogeneous carbonate system. Specifically, modeling capabilities of TOUGH2, which examines multiphase flow and supercritical CO2 behavior, were combined with the geochemical modeling capabilities of The
Authors
Tina L. Roberts-Ashby, Peter M. Berger, Jeffrey A. Cunningham, Ram Kumar, Madalyn S. Blondes
Assessment of undiscovered oil and gas resources in the South Florida basin, 2016 Assessment of undiscovered oil and gas resources in the South Florida basin, 2016
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean undiscovered, technically recoverable resources of 49 million barrels of oil and 18 billion cubic feet of gas in the onshore and State waters part of the South Florida basin.
Authors
Tina L. Roberts-Ashby, Paul C. Hackley, Celeste D. Lohr, Christopher J. Schenk, Tracey J. Mercier, Katherine J. Whidden, Phuong A. Le, Marilyn E. Tennyson, Stephanie B. Gaswirth, Cheryl A. Woodall, Michael E. Brownfield, Heidi M. Leathers-Miller, Kristen R. Marra, Thomas M. Finn
Geologic framework for the national assessment of carbon dioxide storage resources—Atlantic Coastal Plain and Eastern Mesozoic Rift Basins Geologic framework for the national assessment of carbon dioxide storage resources—Atlantic Coastal Plain and Eastern Mesozoic Rift Basins
This chapter presents information pertinent to the geologic carbon dioxide (CO2) sequestration potential within saline aquifers located in the Atlantic Coastal Plain and Eastern Mesozoic Rift Basins of the Eastern United States. The Atlantic Coastal Plain is underlain by a Jurassic to Quaternary succession of sedimentary strata that onlap westward onto strata of the Appalachian Piedmont
Authors
William H. Craddock, Matthew D. Merrill, Tina L. Roberts-Ashby, Sean T. Brennan, Marc L. Buursink, Ronald M. Drake, Peter D. Warwick, Steven M. Cahan, Christina A. DeVera, Philip A. Freeman, Mayur A. Gosai, Celeste D. Lohr
A method for examining the geospatial distribution of CO2 storage resources applied to the Pre-Punta Gorda Composite and Dollar Bay reservoirs of the South Florida Basin, U.S.A A method for examining the geospatial distribution of CO2 storage resources applied to the Pre-Punta Gorda Composite and Dollar Bay reservoirs of the South Florida Basin, U.S.A
This paper demonstrates geospatial modification of the USGS methodology for assessing geologic CO2 storage resources, and was applied to the Pre-Punta Gorda Composite and Dollar Bay reservoirs of the South Florida Basin. The study provides detailed evaluation of porous intervals within these reservoirs and utilizes GIS to evaluate the potential spatial distribution of reservoir...
Authors
Tina Roberts-Ashby, Brandon N. Ashby
Geologic framework for the national assessment of carbon dioxide storage resources─South Florida Basin: Chapter L in Geologic framework for the national assessment of carbon dioxide storage resources Geologic framework for the national assessment of carbon dioxide storage resources─South Florida Basin: Chapter L in Geologic framework for the national assessment of carbon dioxide storage resources
This report presents five storage assessment units (SAUs) that have been identified as potentially suitable for geologic carbon dioxide sequestration within a 35,075-square-mile area that includes the entire onshore and State-water portions of the South Florida Basin. Platform-wide, thick successions of laterally extensive carbonates and evaporites deposited in highly cyclic depositional
Authors
Tina L. Roberts-Ashby, Sean T. Brennan, Matthew D. Merrill, Madalyn S. Blondes, P.A. Freeman, Steven M. Cahan, Christina A. DeVera, Celeste D. Lohr
Geologic framework for the national assessment of carbon dioxide storage resources: Permian and Palo Duro Basins and Bend Arch-Fort Worth Basin: Chapter K in Geologic framework for the national assessment of carbon dioxide storage resources Geologic framework for the national assessment of carbon dioxide storage resources: Permian and Palo Duro Basins and Bend Arch-Fort Worth Basin: Chapter K in Geologic framework for the national assessment of carbon dioxide storage resources
The U.S. Geological Survey has completed an assessment of the potential geologic carbon dioxide storage resource in the onshore areas of the United States. To provide geological context and input data sources for the resources numbers, framework documents are being prepared for all areas that were investigated as part of the national assessment. This report is the geologic framework...
Authors
Matthew D. Merrill, Ernie R. Slucher, Tina L. Roberts-Ashby, Peter D. Warwick, Madalyn S. Blondes, P.A. Freeman, Steven M. Cahan, Christina A. DeVera, Celeste D. Lohr
Geologic framework for the national assessment of carbon dioxide storage resources: Williston Basin, Central Montana Basins, and Montana Thrust Belt study areas Geologic framework for the national assessment of carbon dioxide storage resources: Williston Basin, Central Montana Basins, and Montana Thrust Belt study areas
The 2007 Energy Independence and Security Act directs the U.S. Geological Survey (USGS) to conduct a national assessment of potential geologic storage resources for carbon dioxide (CO2). The methodology used by the USGS for the national CO2 assessment follows that of previous USGS work. This methodology is non-economic and is intended to be used at regional to sub-basinal scales. The...
Authors
Marc L. Buursink, Matthew D. Merrill, William H. Craddock, Tina L. Roberts-Ashby, Sean T. Brennan, Madalyn S. Blondes, P.A. Freeman, Steven M. Cahan, Christina A. DeVera, Celeste D. Lohr
Geologic framework for the national assessment of carbon dioxide storage resources: Alaska North Slope and Kandik Basin, Alaska Geologic framework for the national assessment of carbon dioxide storage resources: Alaska North Slope and Kandik Basin, Alaska
This report presents fourteen storage assessment units (SAUs) from the Alaska North Slope and two SAUs from the Kandik Basin of Alaska. The Alaska North Slope is a broad, north-dipping coastal plain that is underlain by a thick succession of sedimentary rocks that accumulated steadily throughout much of the Phanerozoic during three major tectonic sequences: the Mississippian through...
Authors
William H. Craddock, Marc L. Buursink, Jacob A. Covault, Sean T. Brennan, Colin A. Doolan, Ronald M. Drake, Matthew D. Merrill, Tina L. Roberts-Ashby, Ernie R. Slucher, Peter D. Warwick, Madalyn S. Blondes, P.A. Freeman, Steven M. Cahan, Christina A. DeVera, Celeste D. Lohr
Geologic framework for the national assessment of carbon dioxide storage resources: U.S. Gulf Coast Geologic framework for the national assessment of carbon dioxide storage resources: U.S. Gulf Coast
This report presents 27 storage assessment units (SAUs) within the United States (U.S.) Gulf Coast. The U.S. Gulf Coast contains a regionally extensive, thick succession of clastics, carbonates, salts, and other evaporites that were deposited in a highly cyclic depositional environment that was subjected to a fluctuating siliciclastic sediment supply and transgressive and regressive sea...
Authors
Tina L. Roberts-Ashby, Sean T. Brennan, Marc L. Buursink, Jacob A. Covault, William H. Craddock, Ronald M. Drake, Matthew D. Merrill, Ernie R. Slucher, Peter D. Warwick, Madalyn S. Blondes, Mayur A. Gosai, P.A. Freeman, Steven M. Cahan, Christina A. DeVera, Celeste D. Lohr
National assessment of geologic carbon dioxide storage resources: Results National assessment of geologic carbon dioxide storage resources: Results
In 2012, the U.S. Geological Survey (USGS) completed an assessment of the technically accessible storage resources (TASR) for carbon dioxide (CO2) in geologic formations underlying the onshore and State waters area of the United States. The formations assessed are at least 3,000 feet (914 meters) below the ground surface. The TASR is an estimate of the CO2 storage resource that may be...
Authors
National assessment of geologic carbon dioxide storage resources: Data National assessment of geologic carbon dioxide storage resources: Data
In 2012, the U.S. Geological Survey (USGS) completed the national assessment of geologic carbon dioxide storage resources. Its data and results are reported in three publications: the assessment data publication (this report), the assessment results publication (U.S. Geological Survey Geologic Carbon Dioxide Storage Resources Assessment Team, 2013a, USGS Circular 1386), and the...
Authors
National assessment of geologic carbon dioxide storage resources: Summary National assessment of geologic carbon dioxide storage resources: Summary
The U.S. Geological Survey (USGS) recently completed an evaluation of the technically accessible storage resource (TASR) for carbon dioxide (CO2) for 36 sedimentary basins in the onshore areas and State waters of the United States. The TASR is an estimate of the geologic storage resource that may be available for CO2 injection and storage and is based on current geologic and hydrologic...
Authors
Non-USGS Publications**
Post, P.J., Coleman, Jr., J.L., Rosen, N.C., Brown, D.E., Roberts-Ashby, T.L., Kahn, P., Rowan, M., eds. (2015). Petroleum Systems in “Rift” Basins. 34th Annual GCSSEPM Foundation Perkins-Rosen Research Conference, Program and Abstracts, 68 p.
Roberts-Ashby, T.L., Stewart, M.T., and Ashby, B.N., 2013, An evaluation of porosity and potential use for carbon dioxide storage in the Upper Cretaceous Lawson Formation and Paleocene Cedar Keys Formation of south-central and southern Florida: Environmental Geosciences, v. 20, no. 3, p. 109-135.
Roberts-Ashby, T.L. and Stewart, M.T., 2012, Potential for carbon dioxide sequestration in the Lower Cretaceous Sunniland Formation within the Sunniland Trend of the South Florida Basin, U.S.: International Journal of Greenhouse Gas Control, v. 6, p. 113-125.
Roberts, T. and Harris, W. (2004). Characterization of nutrients and trace metals in the Peedee Sand and Castle Hayne Limestone Aquifers: New Hanover County, southeastern North Carolina. Southeastern Geology, v. 43, no. 2.
Scott, T., Means, G., Means, R., Meegan, R., Upchurch, S., Copeland, R., Jones, J., Roberts, T., and Willet, W.A. (2004). Springs of Florida. Florida Geological Survey Bulletin 66.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government