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Articles 1291 - 1320 of 1905
Full-Text Articles in Geology
Nebraska Natural Resources District Boundaries, Nebraska Department Of Natural Resources
Nebraska Natural Resources District Boundaries, Nebraska Department Of Natural Resources
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
River Potholes: Modern And Ancient, Robert F. Diffendal Jr.
River Potholes: Modern And Ancient, Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
A river pothole is a cylindrical, bowl-shaped, or irregular hollow that is usually deeper than wide. It is formed in the rocky bed of a stream by either the grinding action of sediment whirled around by stream eddies or the force of fast flowing water. Potholes usually have spirally grooved surfaces. Their widths and depths range from a few inches to many feet. Potholes on the floor of the Susquehanna River near Columbia, Pennsylvania, for example, are large enough to hold objects the size of a small car.
Potholes generally are formed in fairly homogeneous rock by streams that at …
Ua66/8/3 Geogram, Wku Geography & Geology
Ua66/8/3 Geogram, Wku Geography & Geology
WKU Administration Documents
Newsletter created by and about the WKU Geography & Geology highlighting activities of faculty, students and alumni.
The Use Of Down-Hole Video To Evaluate Parameters Affecting Removal Of Storm Water Runoff Into A Karst Aquifer In Bowling Green, Kentucky, Philip Reeder
Masters Theses & Specialist Projects
Due to recent land use changes, runoff has greatly increased In Bowling Green, necessitating the drilling of nearly 600 drainage wells to direct storm water into the Lost River Karst Aquifer. Research was conducted to (1) differentiate areas of the city as optimal for removal of storm water runoff, (2) correlate lithologic features between wells, and (3) determine optimal depths to which new drainage wells should be drilled. This was accomplished using maximum capacity tests, correlation of lithologic features between wells and comparing void density to depth below the land surface.
It was only possible to develop general trends in …
Groundwater Levels In Nebraska, 1987, Michael J. Ellis, Perry B. Wigley
Groundwater Levels In Nebraska, 1987, Michael J. Ellis, Perry B. Wigley
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Singleton Ranch Quadrangle, Nebraska—Banner, Kimball, And Cheyenne Counties, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.
Singleton Ranch Quadrangle, Nebraska—Banner, Kimball, And Cheyenne Counties, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
Singleton Ranch Quadrangle, Nebraska—Banner, Kimball, and Cheyenne Counties
7.5 minute series (topographic), scale 1:24000
103°22'30" to 103°30'
41°22'30" to 41°30'
Toa, Ql, Qalc
June 13, 1988
An Investigation Of A Soil Gas Sampling Technique And Its Applicability For Detecting Gaseous Pce And Tca Over An Unconfined Granular Aquifer, Timothy J. Mayotte
An Investigation Of A Soil Gas Sampling Technique And Its Applicability For Detecting Gaseous Pce And Tca Over An Unconfined Granular Aquifer, Timothy J. Mayotte
Masters Theses
A soil gas sampling and analytical technique was investigated to evaluate its ability and versatility for detecting chlorinated hydrocarbons in unconfined aquifers. The technique was used successfully to delineate plumes of perchloroethene (PCE), and 1,1,1-trichloroethane (TCA) contamination present in the vadose zone, and at the water table of an unconfined sand and gravel aquifer. Soil gas samples were obtained by concentrating PCE and TCA vapors diffusing from these sources onto a sorbent material. The samples were analyzed by gas chromatography. The data from the analysis of these samples were used to provide an initial estimate of the source areas, and …
A Guide To The Practical Use Of Aerial Color-Infrared Photography In Agriculture, Donald C. Rundquist, Scott A. Samson
A Guide To The Practical Use Of Aerial Color-Infrared Photography In Agriculture, Donald C. Rundquist, Scott A. Samson
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Estimated Use Of Water In Nebraska, 1985, Eugene K. Steele Jr.
Estimated Use Of Water In Nebraska, 1985, Eugene K. Steele Jr.
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Geology And Petrogenesis Of Ash-Flow Tuffs And Rhyolitic Lavas Associated With The Gila Cliff Dwellings Basin-Bursum Calder Complex, Southwestern New Mexico, Sheila June Seaman
Geology And Petrogenesis Of Ash-Flow Tuffs And Rhyolitic Lavas Associated With The Gila Cliff Dwellings Basin-Bursum Calder Complex, Southwestern New Mexico, Sheila June Seaman
Earth and Planetary Sciences ETDs
The Mogollon-Datil volcanic field of southwestern New Mexico was the site of extensive mid-Tertiary felsic volcanism. The Bursum caldera-Gila Cliff Dwellings basin is a volcanic complex in which stratigraphic and compositional relationships between eruptive units are controversial. Uncertainties associated with the complex include the relative ages of the two overlapping structures, the caldera of origin of ash-flow tuff which fills the Gila Cliff Dwellings basin, and the reconciliation of stratigraphic and chemical relations between volcanic units. A stratigraphic, structural, paleomagnetic, and petrologic study of six ash-flow tuff and lava units has contributed data to several problems concerning the geologic history …
Redington Quadrangle, Nebraska—Banner And Morrill Counties, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.
Redington Quadrangle, Nebraska—Banner And Morrill Counties, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
Redington Quadrangle, Nebraska—Banner and Morrill Counties
7.5 minute series (topographic), scale 1:24000
103°15' to 103°22'30"
41°30' to 41°37'30"
Twb, Qalc, Toa, IW, Tamch, Lower Whitney, Upper Whitney
April 5, 1988
Lisco Nw Quadrangle, Nebraska—Garden, Morrill, And Cheyenne Counties, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.
Lisco Nw Quadrangle, Nebraska—Garden, Morrill, And Cheyenne Counties, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
Lisco NW Quadrangle, Nebraska—Garden, Morrill, and Cheyenne Counties
7.5 minute series (topographic), scale 1:24,000
102°37'30" to 102°45'
41°22'30" to 41°30'
March 31, 1988
Mud Springs Quadrangle, Nebraska—Morrill And Cheyenne Counties, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.
Mud Springs Quadrangle, Nebraska—Morrill And Cheyenne Counties, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
Mud Springs Quadrangle, Nebraska—Morrill and Cheyenne Counties
7.5 minute series (topographic), scale 1:24,000
103° to 103°07'30"
41°22'30" to 41°30'
Toa (Coarse sand and cobble gravel)
March 25, 1988
Lawrence Fork / Potter 2 Ne Quadrangle, Nebraska—Banner, Morril, And Cheyenne Counties, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.
Lawrence Fork / Potter 2 Ne Quadrangle, Nebraska—Banner, Morril, And Cheyenne Counties, 7.5 Minute Series (Topographic), Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
Lawrence Fork / Potter 2 NE Quadrangle, Nebraska—Banner, Morril, and Cheyenne Counties
7.5 minute series (topographic), scale 1:24,000
103°15' to 103°22'30"
41°22'30" to 41°30'
Toa, Twb, Qalc, IW
March 1988
Hydrogeology Of Garfield And Wheeler Counties, Nebraska, Dennis R. Lawton, Robert A. Hiergesell
Hydrogeology Of Garfield And Wheeler Counties, Nebraska, Dennis R. Lawton, Robert A. Hiergesell
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Broadwater [Se] Quadrangle, Morrill County, Nebraska, Robert F. Diffendal Jr.
Broadwater [Se] Quadrangle, Morrill County, Nebraska, Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
7.5' topgraphic quadrangle showing exposures of bedrock formations and other geologic information.
41° 30' — 41° 37'30"
102° 45' — 102° 52'30"
Scale 1:24,000
Completed [n.d.]
High resolution .tif file attached below as supplemental file
Broadwater Sw Quadrangle, Morrill County, Nebraska, Robert F. Diffendal Jr.
Broadwater Sw Quadrangle, Morrill County, Nebraska, Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
7.5' topgraphic quadrangle showing exposures of bedrock formations and other geologic information.
41° 30' — 41° 37'30"
102° 52'30" — 103° 00'
Scale 1:24,000
Completed April 12, 1988
High resolution .tif file attached below as supplemental file
Ua66/8/2 Report, Wku Center For Cave & Karst Studies
Ua66/8/2 Report, Wku Center For Cave & Karst Studies
WKU Administration Documents
Report regarding history and activities of the WKU Center for Cave & Karst Studies from 1976 to 1987.
Branched Oak Lake State Recreation Area
Branched Oak Lake State Recreation Area
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource Notes-Fall/Winter 1987-88
Resource Notes-Fall/Winter 1987-88
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Mineral Yearbook Of Nebraska-1988, Leon E. Esparza, Raymond R. Burchett
Mineral Yearbook Of Nebraska-1988, Leon E. Esparza, Raymond R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Saturated Thickness Of The Principal Groundwater Reservoir In Nebraska, Conservation And Survey Division
Saturated Thickness Of The Principal Groundwater Reservoir In Nebraska, Conservation And Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Groundwater Levels In Nebraska, 1987, Michael J. Ellis, Perry B. Wigley
Groundwater Levels In Nebraska, 1987, Michael J. Ellis, Perry B. Wigley
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resourceful Scenes From Past And Present, Roger K. Pabian
Resourceful Scenes From Past And Present, Roger K. Pabian
Conservation and Survey Division: Faculty and Staff Publications
These sites represent significant, interesting or unique occurrences of geologically related natural resources in the state. An extensive explanation of the fifty-seven items notated on the map is included.
General Soil Map Of Nebraska, Mark S. Kuzila, Ann M. Mack, J.R. Culver, Steven J. Schaefer
General Soil Map Of Nebraska, Mark S. Kuzila, Ann M. Mack, J.R. Culver, Steven J. Schaefer
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Annual Installation Of Irrigation Wells In Nebraska Through 1988, Conservation Survey Division
Annual Installation Of Irrigation Wells In Nebraska Through 1988, Conservation Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Significant Rises And Declines In Nebraska Groundwater Levels (From Pre-Development As Of Fall 1986)/Registered Irrigation Wells In Nebraska (As Of January 1, 1987), Conservation Survey Division, U.S. Geological Survey
Significant Rises And Declines In Nebraska Groundwater Levels (From Pre-Development As Of Fall 1986)/Registered Irrigation Wells In Nebraska (As Of January 1, 1987), Conservation Survey Division, U.S. Geological Survey
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Development Of Dynamic Non-Hortonian Watershed Models For Steeply Sloping Forested Watersheds: Application To Eastern Kentucky, Lindell E. Ormsbee, Abdul Q. Khan
Development Of Dynamic Non-Hortonian Watershed Models For Steeply Sloping Forested Watersheds: Application To Eastern Kentucky, Lindell E. Ormsbee, Abdul Q. Khan
KWRRI Research Reports
A comprehensive conceptual watershed model is developed to simulate the hydrologic response of steeply sloping forested watersheds. Two non-Hortonian and two Hortonian models were first tested with data from selected watersheds in West Virginia and eastern Kentucky in order to understand the different mechanisms of flow responsible for storm hydrograph generation in this type of watersheds. The two non-Hortonian models tested were the kinematic storage model (Sloan et al. 1983) and the saturation deficit model (Beven and Wood, 1983). Both models were unable to adequately reproduce the observed hydrographs in the four forested watersheds considered in this research. The two …
Groundwater Levels In Nebraska, 1986, Michael J. Ellis, Vincent H. Dreeszen
Groundwater Levels In Nebraska, 1986, Michael J. Ellis, Vincent H. Dreeszen
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Geology Of Selected Sites Near The Republican River In Franklin County, Nebraska, Roger K. Pabian
Geology Of Selected Sites Near The Republican River In Franklin County, Nebraska, Roger K. Pabian
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.