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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

Horsehead Ranch Quadrangle, Morrill And Cheyenne Counties, Nebraska, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

7.5' topgraphic quadrangle showing exposures of bedrock formations and other geologic information.

41° 22'30" — 41° 30'

103° 7'30" — 103° 15'

Scale 1:24,000

Completed March 24, 1988

High resolution .tif file attached below as supplemental file

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

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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.

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

Leg 101--An Overview, James A. Austin Jr., Wolfgang Schlager, Amanda A. Palmer, Paul A. Comet, André Droxler, Gregor Eberli, Eric Fourcade, Raymond Freeman-Lynde, Craig S. Fulthorpe, Gill Harwood, Gerhard Kuhn, Dawn Lavoie, Mark Leckie, Allan J. Melillo, Arthur Moore, Henry T. Mullins, Christian Ravenne, William W. Sager, Peter Swart, Joost W. Verbeek, David K. Watkins, Colin Williams

Department of Earth and Atmospheric Sciences: Faculty Publications

During Leg 101, the inaugural leg of the Ocean Drilling Program, the JOIDES Resolution drilled 19 holes at 11 sites in the Bahamas. Grids of high-resolution seismic profiles provided information crucial for both site selection and regional stratigraphic interpretations. The first major scientific objective was to understand the long-term evolution of the bank-and-basin pattern that currently characterizes the Bahamas archipelago. Drilling and seismic surveys have indicated considerable platform expansion and retreat rather than stationary upward growth. Upbuilding in the Late Jurassic-Early Cretaceous was followed by drowning and retreat in the mid-Cretaceous and by renewed expansion in the Cenozoic. At Site …

Drought Management: The Role Of Near- Real Time Weather Data, Donald A. Wilhite, Kenneth G. Hubbard

National Drought Mitigation Center: Faculty Publications

The ability to collect weather data in near-real time has improved because of technological advances, enabling weather data users to obtain more weather data over wider areas, and in a more timely fashion. The number of near-real time climate networks is increasing as new applications are found for climate data. More than fifteen states in the United States have established automated weather station networks. This paper presents an overview of recent developments in automated weather data collection in the United States and gives a detailed description of the network in Nebraska.

Near-real time weather data has many applications in agricultural …

Cropstatus--A Computer Program To Assess The Effects Of Seasonal Weather Changes On Nebraska's Agriculture, R. E. Neild, Donald A. Wilhite, K. G. Hubbard

National Drought Mitigation Center: Faculty Publications

CROPSTATUS is a series of programs residing in Nebraska's AGNET system using daily weather data to assess seasonal changes in crops, livestock, and other agricultural conditions. Assessments are based on parameters developed from accumulations of current daily temperature and precipitation data collected from a network of synoptic, climate, and automated micrometeorological stations in Nebraska in comparison with daily normals. The daily normals were derived from monthly summaries using multiple regression models to compute daily values as a function of Julian day numbers. Crop phenology models based on growing degree days were used to monitor and forecast the progress of different …

Improving Projected Potential Evapotranspiration Estimates Using National Weather Service Forecasts, Steven J. Meyer, Kenneth G. Hubbard, Donald A. Wilhite

National Drought Mitigation Center: Faculty Publications

In a recent survey conducted by the University of Nebraska's Center for Agricultural Meteorology and Climatology of Agricultural Network (AGNET) users, the results of potential evapotranspiration (ET_p) projections (calculated using the Blaney-Criddle approach, which employs "normal" climatic data to project ET_p estimates up to three days into the future) were labeled "unrealistic." To improve these projections, National Weather Service (NWS) forecast variables were used as input into the Blaney-Criddle and Penman equations. ET_p projections calculated according to the Penman equation, with data measured by automated weather stations as input, were assumed to represent the "best" …

The Nebraska Agricultural Climate Situation Committee, R. E. Neild, K. G. Hubbard, Donald A. Wilhite

National Drought Mitigation Center: Faculty Publications

The Nebraska Agricultural Climate Situation Committee consisting of an interdisciplinary group of extension specialists provides up-to-date information and advice on seasonal changes in crop/ weather conditions. The committee meets each Monday during the growing season to review:

1. Maps and tabular data developed by a computer program CIS /Crop Weather Information System/ that is linked to a network of weather stations and computer terminals in county agent offices.

2. Insect, plant disease and weed surveys.

3. Weekly weather and crop reports from the State/Federal System.

4. Weather outlooks from the National Weather Service.

5. Climate probabilities.

Situation reports and advisories …

Branched Oak Lake State Recreation Area

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Calcareous Nannofossil Biostratigraphy From Leg 101, Northern Bahamas, David K. Watkins, Joost W. Verbeek

Department of Earth and Atmospheric Sciences: Faculty Publications

Leg 101 of the Ocean Drilling Program drilled 19 holes at 11 sites to investigate the geology of the Straits of Florida and the northern Bahamas. Drilling at Site 626 indicated that the Gulf Stream has had significant flow through the Straits of Florida for at least the last 24 million years. Winnowed, foraminiferal grainstones and packstones with sparse nannofossil assemblages and the reworking of older nannofossils suggest strong bottom-current activity throughout this interval. Drilling north of Little Bahama Bank and in Exuma Sound documents the growth of platform slopes during the late Cenozoic. Nannofossil biostratigraphy of the upper Cenozoic …

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

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

The Cajon Pass Scientific Drilling Experiment: Overview Of Phase 1, Mark D. Zoback, Leon T. Silver, Thomas Henyey, Wayne Thatcher

United States Geological Survey: Staff Publications

The Cajon Pass Scientific Drilling Project is a broad, interdisciplinary experiment involving over two dozen principal scientists. Phase I of drilling, coring and down hole experimentation began Dec. 8, 1986 and ended April 2, 1987 with the hole at a depth of 2115 m, 82 m of core recovered and a wide range of down hole experiments successfully completed. In this paper we briefly outline the scientific motivation for the project and provide an overview of the scientific program. We also indicate some of the varied research areas in the earth sciences where data obtained in this experiment will provide …

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.

10. Evidence For Continuous And Discontinuous Alteration In Dsdp Hole 418a Basalts And Its Significance To Natural Gamma-Ray Log Readings, Mary Anne Holmes

Department of Earth and Atmospheric Sciences: Faculty Publications

During Ocean Drilling Program Leg 102, the Schlumberger natural gamma-ray spectrometry tool measured high potassium levels in one interval of DSDP Hole 418A basalts. Samples from that hole were examined by X-ray diffraction, SEM, and EDS analyses in order to identify mineral species responsible for the high readings. The results indicate that high K readings observed on wireline logs run in basement can be attributed to extensive low-temperature oxidative alteration resulting in formation of palagonite and K-rich clays (celadonite, potassic nontronite, and mixed-layer celadonite/ nontronite). Where these readings are accompanied by high porosity, low density, and low velocity readings, a …

Continuation Of A Deep Borehole Stress Measurement Profile Near The San Andreas Fault 1. Hydraulic Fracturing Stress Measurements At Hi Vista, Mojave Desert, California, Stephen H. Hickman, Mark D. Zoback, John H. Healy

United States Geological Survey: Staff Publications

Hydraulic fracturing stress measurements were made in a 592-m-deep well at Hi Vista, California, 32 km from the San Andreas fault in the western Mojave Desert. The relative magnitudes of the horizontal principal stresses and the calculated overburden stress indicate that the stress regime at this site is transitional between thrust faulting and strike-slip faulting. The azimuths of the induced hydraulic fractureast Hi Vista exhibit considerable scatter, and the indicated direction of them aximum horizontal principal stress ranges from north-northeast to northwest. The measured magnitudes of the horizontal principal stresses and the horizontal deviatoric stress in this well are less …

A Statistical Evaluation Of Formation Disturbance Produced By Well-Casing Installation Methods, Roger H. Morin, Denis R. Leblanc, Warren E. Teasdalea

United States Geological Survey: Staff Publications

Water-resources investigations concerned with contaminant transport through aquifers comprised of very loose, unconsolidated sediments have shown that small-scale variations in aquifer characteristics can significantly affect solute transport and dispersion. Various sampling and borehole-logging techniques have been integrated into these studies to detect and measure detailed formation changes through casing or well screen along the length of the borehole. Commonly, measurement accuracy and resolution have been limited by a borehole environment consisting of an annulus of disturbed sediments produced by the casinginstallation method.

Determining The Distribution Of Hydraulic Conductivity 1n A Fractured Limestone Aquifer By Simultaneous Injection And Geophysical Logging, Roger H. Morin, Alfred E. Hess, Frederick L. Paillee

United States Geological Survey: Staff Publications

i\ field technique for assessing the vertical distribution of hydraulic conductivity in an aquifer was applied to a fractured carbonate formation in southeastern Nevada. The technique combines the simultaneous usc of fluid injection and geophysical logging to measure in situ vertical distributions of fluid velocity and hydraulic head down the borehole; these data subsequently are analyzed to arrive at quantitative estimates of hydraulic conductivity across discrete intervals in the aquifer. The diagnostic capabilities of the analysis were found to be constraincd by the accuracy and resolution of the logging tools as well as by the hydraulic characteristics of the formation. …

Hydraulic Fracturing In Situ Stress Measurements To 2.1 Km Depth At Cajon Pass, California, John H. Healy, Mark D. Zoback

United States Geological Survey: Staff Publications

Stress measurements to 2.1km reveal stress changes with depth that cannot be explained by an elastic response to uniform crustal strain. The data at about 1 km depth suggest that the stress is limited by the frictional strength of rock and is perturbed at greater depths by faults which intersect the borehole. The stress
data indicate that there is little or no right-lateral shear stress acting on planes parallel to the San Andreas Fault.

A Monograph Of The Genus Polyphylla Harris In America North Of Mexico (Coleoptera: Scarabaeidae: Melolonthinae), Ronald M. Young

Bulletin of the University of Nebraska State Museum (1924–2023)

The North American species of the genus Polyphylla Harris, 1841, are defined and revised for the first time since Fall (1928). All name bearing types were examined except those of P. oklahomensis Hatch and P. subvittata LeConte (synonyms of P. hammondl), which are lost. A lectotype is designated for P. gracilis Horn, and neotypes for P. decemlineata (Say), P. occidentalis (L.), and P. variolosa (Hentz). New synonyms of P. decemlineata are P. comstockiana von Bloeker, P. matrona Casey, and P. potsiana Casey. New synonyms of P. crinita …

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

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska Mineral Operations Review, 1987, Raymond R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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.

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

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Paleontological Results From Ocean Drilling Program Leg 101, David K. Watkins, Eric Fourcade, R. Mark Leckie, Allan J. Melillo, Amanda A. Palmer, Joost W. Verbeek, Jacques Butterlin, Renée Damotte, Claude Guernet, Edwige Masure, Michael J. Moran

Department of Earth and Atmospheric Sciences: Faculty Publications

Leg 101 of the Ocean Drilling Program recovered Albian through Holocene sediments from a variety of carbonate depositional environments. Data from four microplanktonic groups (calcareous nannofossils, planktonic foraminifers, radiolarians, and dinoflagellates) and four benthic groups (larger foraminifers, smaller benthic foraminifers, ostracodes, and sponge spicules) yield a biostratigraphic and paleoecologic framework for these varied sediments. Winnowed, skeletal-planktonic foraminiferal packstones and grainstones from the central Straits of Florida (Site 626) reflect a late Oligocene to Holocene history of sporadic sedimentation greatly influenced by strong bottom-current activity. Neogene to Quaternary sediments from two carbonate-slope transects (Sites 627 to 633) indicate significant slope accretion …