David J Weary
David J. Weary is a Scientist Emeritus at the Florence Bascom Geoscience Center.
David Weary earned a BS degree in geology from George Mason Univ. in 1982; MS in geology from Virginia Tech in 1988. Started at the USGS in 1988 as a PST for the Paleontology and Stratigraphy Branch, specializing in conodont sample processing and biostratigraphy. In 1996 David joined the Eastern Earth Surface Processes Team. Since 1998 David has worked as a geologic mapper, specializing in geohydrologic framework studies in karstic rocks. Field areas included: Ozarks of southern MO; Saipan, Northern Mariana Islands; and the Shenandoah Valley area of VA and WV. David has also worked in the southern Great Basin and the Black Hills. Since 2003 David has served as a research geologist and Project Chief of the KARST Project out of the Eastern Geology and Paleoclimate Science Center, Reston, VA. David also represented the USGS on the Board of directors of the National Cave and Karst Research Institute From 2009 to 2018.
Professional Studies/Experience
- Physical Science Technician: USGS Paleontology & Stratigraphy Branch (1988 – 1997). PST. Conodont biostratigraphic and thermal alteration research. Worked for Anita Harris and John Repetski.
- Associate Instructor: Paleontology and Geology, Northern Virginia Community College (1989 – 1991).
- Project Geologist: Midcontinent Karst Systems and Geologic Mapping (1997 - 2003) geologic mapping and hydrogeologic studies in the area of the Ozark National Scenic Riverways park (NPS), Missouri. Developed early digital mapping and GIS/GPS techniques.
- Task 1, Geologic mapping in VA and WV: The primary goal is to produce 1:24,000 & 1:100,000 scale geologic maps of selected areas in the Shenandoah Valley of VA and WV. Work in cooperation with the VA and WV, USGS WSC’s and with local and state governments to develop a better understanding of the role of the bedrock geology in guiding groundwater flow characteristics.
- Task 2, U.S. National Karst Map: Our goal is to produce a new, GIS-based national karst map. This map will serve both as a small-scale graphic representation of the extent of karstic rocks in the United States (National Atlas) and as GIS data that will be linked to more detailed, site-specific databases. This work involves interaction with state geological surveys, the National Cave and Karst Research Institute (NCKRI), and karst experts from academia and the National Speleological Society.
- Task 3, Geologic mapping in the Ozarks of MO: geologic mapping in areas of Paleozoic carbonate and clastic rocks and Mesoproterozoic volcanic rocks at scales of 1:24,000 and 1:100,000. Investigation of geologic controls on groundwater flow, karstification, and speleogenesis in the Ozark Aquifer. This work addresses two priority needs: 1) Developing a hydrogeologic framework for the St. Fraincois and Ozark aquifers in southern MO and potential impacts on groundwater quality by proposed base-metal mining in the Mark Twain National Fo
Science and Products
Filter Total Items: 14
Geology of the Stegall Mountain 7.5-minute quadrangle, Shannon and Carter Counties, south-central Missouri
The bedrock exposed in the Stegall Mountain Quadrangle, Missouri, comprises Mesoproterozoic aged volcanic rocks overlain by Late Cambrian and Early Ordovician aged dolomite, sandstone, and chert. The sedimentary rocks are nearly flat-lying except where they drape around knobs of the volcanic rocks or where they are adjacent to faults. The carbonates are karstified and the area contains numero
Conodont color alteration index (CAI) map and conodont-based age determinations for the Winchester 30' x 60' Quadrangle and adjacent area, Virginia, West Virginia, and Maryland
Most of the conodont data presented in this report (table 1) were acquired to support 1:100,000-scale geologic mapping of the Winchester 30' X 60' quadrangle by the U.S. Geological Survey (USGS). Conodonts were chosen to provide a biostratigraphic framework for the Upper Cambrian to Mississippian marine carbonate rocks that make up about 25 percent of the Paleozoic strata exposed in the quadrangle
Filter Total Items: 25
Preliminary geologic map of the island of Saipan, Commonwealth of the Northern Mariana Islands
This map provides an update and reinterpretation of the geology of the island of Saipan. The geology of the island was previously documented in 1956 in U.S. Geological Survey (USGS) Professional Paper 280-A by Preston E. Cloud, Jr., and others. This report includes a geologic map at a scale of 1:20,000. The fieldwork for this project was performed in 2006 and 2007.
Authors
David J. Weary, William C. Burton
Geologic map of the White Hall quadrangle, Frederick County, Virginia, and Berkeley County, West Virginia
The White Hall 7.5-minute quadrangle is located within the Valley and Ridge province of northern Virginia and the eastern panhandle of West Virginia. The quadrangle is one of several being mapped to investigate the geologic framework and groundwater resources of Frederick County, Va., as well as other areas in the northern Shenandoah Valley of Virginia and West Virginia. All exposed bedrock outcro
Authors
Daniel H. Doctor, Randall C. Orndorff, Ronald A. Parker, David J. Weary, John E. Repetski
Rift-related volcanism and karst geohydrology of the southern Ozark Dome
This field trip examines the geology and geohydrology of a dissected part of the Salem Plateau in the Ozark Plateaus province of south-central Missouri. Rocks exposed in this area include karstified, flat-lying, lower Paleozoic carbonate platform rocks deposited on Mesoproterozoic basement. The latter is exposed as an uplift located about 40 mi southwest of the St. Francois Mountains and form the
Authors
Richard W. Harrison, David J. Weary, Randall C. Orndorff, John E. Repetski, Herbert A. Pierce, Gary R. Lowell
Hydrogeology and Ground-Water Flow in the Opequon Creek Watershed area, Virginia and West Virginia
Due to increasing population and economic development in the northern Shenandoah Valley of Virginia and West Virginia, water availability has become a primary concern for water-resource managers in the region. To address these issues, the U.S. Geological Survey (USGS), in cooperation with the West Virginia Department of Health and Human Services and the West Virginia Department of Environmental Pr
Authors
Mark D. Kozar, David J. Weary
Bedrock structural controls on the occurrence of sinkholes and springs in the Northern Great Valley Karst, Virginia and West Virginia
Recent geologic mapping at a scale of 1:24,000 has enabled a qualitative correlation of the occurrence of springs and sinkholes with bedrock structures and ground-water conditions in the northern Great Valley of Virginia and West Virginia. Sinkholes tend to be concentrated in zones of faulting, local minor folding, and clustered within susceptible bedrock units at the noses and axes of large plung
Authors
Daniel H. Doctor, David J. Weary, Randall C. Orndorff, George E. Harlow, Mark D. Kozar, David L. Nelms
Preliminary Map of Potentially Karstic Carbonate Rocks in the Central and Southern Appalachian States
Karst is a landscape produced by dissolution of rocks and the development of integrated subterranean drainages dominated by the flow of ground water in solutionally enlarged conduits. Karst landscapes typically include cave entrances, sinkholes, blind valleys, losing streams, springs, and large and small-scale solution features on bedrock surfaces. Water-bearing rocks beneath the surface containin
Authors
David J. Weary
Hydrogeology and water quality of the Leetown area, West Virginia
The U.S. Geological Survey’s Leetown Science Center and the co-located U.S. Department of Agriculture’s National Center for Cool and Cold Water Aquaculture both depend on large volumes of cold clean ground water to support research operations at their facilities. Currently, ground-water demands are provided by three springs and two standby production wells used to augment supplies during periods o
Authors
Mark D. Kozar, Kurt J. McCoy, David J. Weary, Malcolm S. Field, Herbert A. Pierce, William Bane Schill, John A. Young
Hydrogeologic Setting and Ground-Water Flow in the Leetown Area, West Virginia
The Leetown Science Center is a research facility operated by the U.S. Geological Survey that occupies approximately 455-acres near Kearneysville, Jefferson County, West Virginia. Aquatic and fish research conducted at the Center requires adequate supplies of high-quality, cold ground water. Three large springs and three production wells currently (in 2006) supply water to the Center. The recent c
Authors
Mark D. Kozar, David J. Weary, Katherine S. Paybins, Herbert A. Pierce
Hydrogeology and ground-water availability in the carbonate aquifer system of Frederick County, Virginia
The carbonate aquifer system of the northern Shenandoah Valley provides an important water supply to local communities, including Frederick County, Va., which depends on ground water as a source of water supply. The county and surrounding area are undergoing increased urbanization, and increased demands on the carbonate aquifer system are expected. A study was conducted between October 2000 and Ma
Authors
George E. Harlow, Randall C. Orndorff, David L. Nelms, David J. Weary, Roger M. Moberg
Fracture trace map and single-well aquifer test results in a carbonate aquifer in Berkeley County, West Virginia
These data contain information on the results of single-well aquifer tests, lineament analysis, and a bedrock geologic map compilation for the low-lying carbonate and shale areas of eastern Berkeley County, West Virginia. Efforts have been initiated by management agencies of Berkeley County in cooperation with the U.S. Geological Survey to further the understanding of the spatial distribution of f
Authors
Kurt J. McCoy, Melvin H. Podwysocki, E. Allen Crider, David J. Weary
Digital engineering aspects of karst map: A GIS version of Davies, W.E., Simpson, J.H., Ohlmacher, G.C., Kirk, W.S., and Newton, E.G., 1984, Engineering aspects of karst: U.S. Geological Survey, National atlas of the United States of America, scale 1:7,
These data are digital facsimiles of the original 1984 Engineering Aspects of Karst map by Davies and others. This data set was converted from a printed map to a digital GIS coverage to provide users with a citable national scale karst data set to use for graphic and demonstration purposes until new, improved data are developed. These data may be used freely with proper citation. Because it has b
Authors
Bret D. Tobin, David J. Weary
Geologic map of the Winchester quadrangle, Frederick County, Virginia
The Winchester 1:24,000-scale quadrangle is one of several quadrangles in Frederick County, Virginia being mapped by geologists from the U.S. Geological Survey in Reston, VA with funding from the National Cooperative Geologic Mapping Program. This work is part of a project being lead by the U.S. Geological Survey Water Resources Discipline, Virginia District, to investigate the geologic fram
Authors
Randall C. Orndorff, David J. Weary, Ronald A. Parker
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Filter Total Items: 14
Geology of the Stegall Mountain 7.5-minute quadrangle, Shannon and Carter Counties, south-central Missouri
The bedrock exposed in the Stegall Mountain Quadrangle, Missouri, comprises Mesoproterozoic aged volcanic rocks overlain by Late Cambrian and Early Ordovician aged dolomite, sandstone, and chert. The sedimentary rocks are nearly flat-lying except where they drape around knobs of the volcanic rocks or where they are adjacent to faults. The carbonates are karstified and the area contains numeroConodont color alteration index (CAI) map and conodont-based age determinations for the Winchester 30' x 60' Quadrangle and adjacent area, Virginia, West Virginia, and Maryland
Most of the conodont data presented in this report (table 1) were acquired to support 1:100,000-scale geologic mapping of the Winchester 30' X 60' quadrangle by the U.S. Geological Survey (USGS). Conodonts were chosen to provide a biostratigraphic framework for the Upper Cambrian to Mississippian marine carbonate rocks that make up about 25 percent of the Paleozoic strata exposed in the quadrangle - Multimedia
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Filter Total Items: 25
Preliminary geologic map of the island of Saipan, Commonwealth of the Northern Mariana Islands
This map provides an update and reinterpretation of the geology of the island of Saipan. The geology of the island was previously documented in 1956 in U.S. Geological Survey (USGS) Professional Paper 280-A by Preston E. Cloud, Jr., and others. This report includes a geologic map at a scale of 1:20,000. The fieldwork for this project was performed in 2006 and 2007.AuthorsDavid J. Weary, William C. BurtonGeologic map of the White Hall quadrangle, Frederick County, Virginia, and Berkeley County, West Virginia
The White Hall 7.5-minute quadrangle is located within the Valley and Ridge province of northern Virginia and the eastern panhandle of West Virginia. The quadrangle is one of several being mapped to investigate the geologic framework and groundwater resources of Frederick County, Va., as well as other areas in the northern Shenandoah Valley of Virginia and West Virginia. All exposed bedrock outcroAuthorsDaniel H. Doctor, Randall C. Orndorff, Ronald A. Parker, David J. Weary, John E. RepetskiRift-related volcanism and karst geohydrology of the southern Ozark Dome
This field trip examines the geology and geohydrology of a dissected part of the Salem Plateau in the Ozark Plateaus province of south-central Missouri. Rocks exposed in this area include karstified, flat-lying, lower Paleozoic carbonate platform rocks deposited on Mesoproterozoic basement. The latter is exposed as an uplift located about 40 mi southwest of the St. Francois Mountains and form theAuthorsRichard W. Harrison, David J. Weary, Randall C. Orndorff, John E. Repetski, Herbert A. Pierce, Gary R. LowellHydrogeology and Ground-Water Flow in the Opequon Creek Watershed area, Virginia and West Virginia
Due to increasing population and economic development in the northern Shenandoah Valley of Virginia and West Virginia, water availability has become a primary concern for water-resource managers in the region. To address these issues, the U.S. Geological Survey (USGS), in cooperation with the West Virginia Department of Health and Human Services and the West Virginia Department of Environmental PrAuthorsMark D. Kozar, David J. WearyBedrock structural controls on the occurrence of sinkholes and springs in the Northern Great Valley Karst, Virginia and West Virginia
Recent geologic mapping at a scale of 1:24,000 has enabled a qualitative correlation of the occurrence of springs and sinkholes with bedrock structures and ground-water conditions in the northern Great Valley of Virginia and West Virginia. Sinkholes tend to be concentrated in zones of faulting, local minor folding, and clustered within susceptible bedrock units at the noses and axes of large plungAuthorsDaniel H. Doctor, David J. Weary, Randall C. Orndorff, George E. Harlow, Mark D. Kozar, David L. NelmsPreliminary Map of Potentially Karstic Carbonate Rocks in the Central and Southern Appalachian States
Karst is a landscape produced by dissolution of rocks and the development of integrated subterranean drainages dominated by the flow of ground water in solutionally enlarged conduits. Karst landscapes typically include cave entrances, sinkholes, blind valleys, losing streams, springs, and large and small-scale solution features on bedrock surfaces. Water-bearing rocks beneath the surface containinAuthorsDavid J. WearyHydrogeology and water quality of the Leetown area, West Virginia
The U.S. Geological Survey’s Leetown Science Center and the co-located U.S. Department of Agriculture’s National Center for Cool and Cold Water Aquaculture both depend on large volumes of cold clean ground water to support research operations at their facilities. Currently, ground-water demands are provided by three springs and two standby production wells used to augment supplies during periods oAuthorsMark D. Kozar, Kurt J. McCoy, David J. Weary, Malcolm S. Field, Herbert A. Pierce, William Bane Schill, John A. YoungHydrogeologic Setting and Ground-Water Flow in the Leetown Area, West Virginia
The Leetown Science Center is a research facility operated by the U.S. Geological Survey that occupies approximately 455-acres near Kearneysville, Jefferson County, West Virginia. Aquatic and fish research conducted at the Center requires adequate supplies of high-quality, cold ground water. Three large springs and three production wells currently (in 2006) supply water to the Center. The recent cAuthorsMark D. Kozar, David J. Weary, Katherine S. Paybins, Herbert A. PierceHydrogeology and ground-water availability in the carbonate aquifer system of Frederick County, Virginia
The carbonate aquifer system of the northern Shenandoah Valley provides an important water supply to local communities, including Frederick County, Va., which depends on ground water as a source of water supply. The county and surrounding area are undergoing increased urbanization, and increased demands on the carbonate aquifer system are expected. A study was conducted between October 2000 and MaAuthorsGeorge E. Harlow, Randall C. Orndorff, David L. Nelms, David J. Weary, Roger M. MobergFracture trace map and single-well aquifer test results in a carbonate aquifer in Berkeley County, West Virginia
These data contain information on the results of single-well aquifer tests, lineament analysis, and a bedrock geologic map compilation for the low-lying carbonate and shale areas of eastern Berkeley County, West Virginia. Efforts have been initiated by management agencies of Berkeley County in cooperation with the U.S. Geological Survey to further the understanding of the spatial distribution of fAuthorsKurt J. McCoy, Melvin H. Podwysocki, E. Allen Crider, David J. WearyDigital engineering aspects of karst map: A GIS version of Davies, W.E., Simpson, J.H., Ohlmacher, G.C., Kirk, W.S., and Newton, E.G., 1984, Engineering aspects of karst: U.S. Geological Survey, National atlas of the United States of America, scale 1:7,
These data are digital facsimiles of the original 1984 Engineering Aspects of Karst map by Davies and others. This data set was converted from a printed map to a digital GIS coverage to provide users with a citable national scale karst data set to use for graphic and demonstration purposes until new, improved data are developed. These data may be used freely with proper citation. Because it has bAuthorsBret D. Tobin, David J. WearyGeologic map of the Winchester quadrangle, Frederick County, Virginia
The Winchester 1:24,000-scale quadrangle is one of several quadrangles in Frederick County, Virginia being mapped by geologists from the U.S. Geological Survey in Reston, VA with funding from the National Cooperative Geologic Mapping Program. This work is part of a project being lead by the U.S. Geological Survey Water Resources Discipline, Virginia District, to investigate the geologic framAuthorsRandall C. Orndorff, David J. Weary, Ronald A. Parker - News