Ralph Shroba
Ralph Shroba is a Scientist Emeritus with the Geosciences and Environmental Change Science Center
Science and Products
Filter Total Items: 42
Preliminary geologic map of the Rifle Quadrangle, Garfield County, Colorado Preliminary geologic map of the Rifle Quadrangle, Garfield County, Colorado
No abstract available.
Authors
Ralph R. Shroba, M. W. Green, G. M. Fairer
Geologic map of the Chief Mountain quadrangle, Lincoln County, Nevada Geologic map of the Chief Mountain quadrangle, Lincoln County, Nevada
No abstract available.
Authors
Peter D. Rowley, R. R. Shroba, F. W. Simonds, K. J. Burke, G.J. Axen, S.D. Olmore
Preliminary geologic map of the Silt Quadrangle, Garfield County, Colorado Preliminary geologic map of the Silt Quadrangle, Garfield County, Colorado
No abstract available.
Authors
R. R. Shroba, G. M. Fairer, M. W. Green
Preliminary surficial geologic map of the Rocky Flats Plant and vicinity, Jefferson and Boulder counties, Colorado Preliminary surficial geologic map of the Rocky Flats Plant and vicinity, Jefferson and Boulder counties, Colorado
No abstract available.
Authors
R. R. Shroba, P. E. Carrara
Soils developed in the glacial deposits of the type areas of the Pinedale and Bull Lake glaciations, Wind River Range, Wyoming, U.S.A Soils developed in the glacial deposits of the type areas of the Pinedale and Bull Lake glaciations, Wind River Range, Wyoming, U.S.A
The degree of soil development in glacial deposits in the Fremont Lake area (FLA) and Bull Lake type area (BLTA) on opposite sides of the Wind River Range of western Wyoming is chiefly influenced by the ages of the parent materials although other soil-forming factors are important. Soil morphology, clay content, and calcium carbonate content are useful in distinguishing moraines of the...
Authors
Robert D. Hall, Ralph R. Shroba
Preliminary geologic map of the Storm King Mountain Quadrangle, Garfield County, Colorado Preliminary geologic map of the Storm King Mountain Quadrangle, Garfield County, Colorado
No abstract available.
Authors
G. M. Fairer, M. W. Green, R. R. Shroba
Filter Total Items: 26
Geologic map of the Storm King Mountain quadrangle, Garfield County, Colorado Geologic map of the Storm King Mountain quadrangle, Garfield County, Colorado
New 1:24,000-scale geologic mapping in the Storm King Mountain 7.5' quadrangle, in support of the USGS Western Colorado I-70 Corridor Cooperative Geologic Mapping Project, provides new data on the structure on the south margin of the White River uplift and the Grand Hogback and on the nature, history, and distribution of surficial geologic units. Rocks ranging from Holocene to...
Geologic map of the Tetilla Peak Quadrangle, Santa Fe and Sandoval counties, New Mexico Geologic map of the Tetilla Peak Quadrangle, Santa Fe and Sandoval counties, New Mexico
This digital geologic map summarizes all available geologic information for the Tetilla Peak quadrangle located immediately southwest of Santa Fe, New Mexico. The geologic map consists of new polygon (geologic map units) and line (contact, fault, fold axis, dike, flow contact, hachure) data, as well as point data (locations for structural measurements, geochemical and geochronologic data
Geologic map of the Silt quadrangle, Garfield County, Colorado Geologic map of the Silt quadrangle, Garfield County, Colorado
New 1:24,000-scale geologic mapping in the Silt 7.5' quadrangle, in support of the USGS Western Colorado I-70 Corridor Cooperative Geologic Mapping Project, provides new interpretations of the stratigraphy, structure, and geologic hazards in the area of the southwest flank of the White River uplift, the Grand Hogback, and the eastern Piceance Basin. The Wasatch Formation was subdivided...
Geologic map of Colorado National Monument and adjacent areas, Mesa County, Colorado Geologic map of Colorado National Monument and adjacent areas, Mesa County, Colorado
New 1:24,000-scale geologic mapping in the Colorado National Monument Quadrangle and adjacent areas, in support of the USGS Western Colorado I-70 Corridor Cooperative Geologic Mapping Project, provides new interpretations of and data for the stratigraphy, structure, geologic hazards in the area from the Colorado River in Grand Valley onto the Uncompahgre Plateau. The plateau drops...
Surficial geologic map of the greater Omaha area, Nebraska and Iowa Surficial geologic map of the greater Omaha area, Nebraska and Iowa
Geologic mapping, in support of the USGS Omaha-Kansas City Geologic Mapping Project, shows the spatial distribution of artificial-fill, alluvial, eolian, and glacial deposits and bedrock in and near Omaha, Nebraska. Artificial fill deposits are mapped chiefly beneath commercial structures, segments of interstate highways and other major highways, railroad tracks, airport runways, and...
Geologic map of the Rifle Falls quadrangle, Garfield County, Colorado Geologic map of the Rifle Falls quadrangle, Garfield County, Colorado
New 1:24,000-scale geologic map of the Rifle Falls 7.5' quadrangle, in support of the USGS Western Colorado I-70 Corridor Cooperative Geologic Mapping Project, provides new interpretations of the stratigraphy, structure, and geologic hazards in the area of the southwest flank of the White River uplift. Bedrock strata include the Upper Cretaceous Iles Formation through Ordovician and...
Science and Products
Filter Total Items: 42
Preliminary geologic map of the Rifle Quadrangle, Garfield County, Colorado Preliminary geologic map of the Rifle Quadrangle, Garfield County, Colorado
No abstract available.
Authors
Ralph R. Shroba, M. W. Green, G. M. Fairer
Geologic map of the Chief Mountain quadrangle, Lincoln County, Nevada Geologic map of the Chief Mountain quadrangle, Lincoln County, Nevada
No abstract available.
Authors
Peter D. Rowley, R. R. Shroba, F. W. Simonds, K. J. Burke, G.J. Axen, S.D. Olmore
Preliminary geologic map of the Silt Quadrangle, Garfield County, Colorado Preliminary geologic map of the Silt Quadrangle, Garfield County, Colorado
No abstract available.
Authors
R. R. Shroba, G. M. Fairer, M. W. Green
Preliminary surficial geologic map of the Rocky Flats Plant and vicinity, Jefferson and Boulder counties, Colorado Preliminary surficial geologic map of the Rocky Flats Plant and vicinity, Jefferson and Boulder counties, Colorado
No abstract available.
Authors
R. R. Shroba, P. E. Carrara
Soils developed in the glacial deposits of the type areas of the Pinedale and Bull Lake glaciations, Wind River Range, Wyoming, U.S.A Soils developed in the glacial deposits of the type areas of the Pinedale and Bull Lake glaciations, Wind River Range, Wyoming, U.S.A
The degree of soil development in glacial deposits in the Fremont Lake area (FLA) and Bull Lake type area (BLTA) on opposite sides of the Wind River Range of western Wyoming is chiefly influenced by the ages of the parent materials although other soil-forming factors are important. Soil morphology, clay content, and calcium carbonate content are useful in distinguishing moraines of the...
Authors
Robert D. Hall, Ralph R. Shroba
Preliminary geologic map of the Storm King Mountain Quadrangle, Garfield County, Colorado Preliminary geologic map of the Storm King Mountain Quadrangle, Garfield County, Colorado
No abstract available.
Authors
G. M. Fairer, M. W. Green, R. R. Shroba
Filter Total Items: 26
Geologic map of the Storm King Mountain quadrangle, Garfield County, Colorado Geologic map of the Storm King Mountain quadrangle, Garfield County, Colorado
New 1:24,000-scale geologic mapping in the Storm King Mountain 7.5' quadrangle, in support of the USGS Western Colorado I-70 Corridor Cooperative Geologic Mapping Project, provides new data on the structure on the south margin of the White River uplift and the Grand Hogback and on the nature, history, and distribution of surficial geologic units. Rocks ranging from Holocene to...
Geologic map of the Tetilla Peak Quadrangle, Santa Fe and Sandoval counties, New Mexico Geologic map of the Tetilla Peak Quadrangle, Santa Fe and Sandoval counties, New Mexico
This digital geologic map summarizes all available geologic information for the Tetilla Peak quadrangle located immediately southwest of Santa Fe, New Mexico. The geologic map consists of new polygon (geologic map units) and line (contact, fault, fold axis, dike, flow contact, hachure) data, as well as point data (locations for structural measurements, geochemical and geochronologic data
Geologic map of the Silt quadrangle, Garfield County, Colorado Geologic map of the Silt quadrangle, Garfield County, Colorado
New 1:24,000-scale geologic mapping in the Silt 7.5' quadrangle, in support of the USGS Western Colorado I-70 Corridor Cooperative Geologic Mapping Project, provides new interpretations of the stratigraphy, structure, and geologic hazards in the area of the southwest flank of the White River uplift, the Grand Hogback, and the eastern Piceance Basin. The Wasatch Formation was subdivided...
Geologic map of Colorado National Monument and adjacent areas, Mesa County, Colorado Geologic map of Colorado National Monument and adjacent areas, Mesa County, Colorado
New 1:24,000-scale geologic mapping in the Colorado National Monument Quadrangle and adjacent areas, in support of the USGS Western Colorado I-70 Corridor Cooperative Geologic Mapping Project, provides new interpretations of and data for the stratigraphy, structure, geologic hazards in the area from the Colorado River in Grand Valley onto the Uncompahgre Plateau. The plateau drops...
Surficial geologic map of the greater Omaha area, Nebraska and Iowa Surficial geologic map of the greater Omaha area, Nebraska and Iowa
Geologic mapping, in support of the USGS Omaha-Kansas City Geologic Mapping Project, shows the spatial distribution of artificial-fill, alluvial, eolian, and glacial deposits and bedrock in and near Omaha, Nebraska. Artificial fill deposits are mapped chiefly beneath commercial structures, segments of interstate highways and other major highways, railroad tracks, airport runways, and...
Geologic map of the Rifle Falls quadrangle, Garfield County, Colorado Geologic map of the Rifle Falls quadrangle, Garfield County, Colorado
New 1:24,000-scale geologic map of the Rifle Falls 7.5' quadrangle, in support of the USGS Western Colorado I-70 Corridor Cooperative Geologic Mapping Project, provides new interpretations of the stratigraphy, structure, and geologic hazards in the area of the southwest flank of the White River uplift. Bedrock strata include the Upper Cretaceous Iles Formation through Ordovician and...